Suzuki GS Twin Digest #31-40



GSTwin-digest          Thursday, June 5 1997          Volume 01 : Number 031




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Date: Tue, 3 Jun 1997 21:18:56 -0800
From: "Michael Moore" 
Subject: Re: GSTwin New Guy

> Remember that as you alter the length of the "dog bones" you not only alter
> the ride height but the leverage the swing arm has over the shock. The
> longer the "dog bone" the more leverage the wheel has over the shock and
> the softer the spring will feel. The GS500 is undertyred with the 130/70

Hello Andrew,

Welcome to the list.

Also, changing the links is very likely to change the shape of the 
suspension curve - is this why you are on #4?  The linkage systems 
can be very complicated to figure out, and require very precise 
measurements/machining, as moving a pivot even a couple of MM can 
cause drastic changes.

Cheers,
Michael 
Michael Moore
Euro Spares, SF CA
Distributor of Lucas RITA and Powerbase products
Sole North American source of "The Racing Motorcycle: a technical guide for constructors"
http://www.eurospares.com
AFM/AHRMA #364

------------------------------

Date: Wed, 4 Jun 1997 16:12:37 +1000
From: A.Horton@records.usyd.edu.au (andrew horton)
Subject: GSTwin dog bones

Michael,.. You wrote;
>....require very precise measurements/machining, as moving a pivot even a
>>couple of MM can cause drastic changes...

Very true. My four examples ranged from 178mm to 188mm C to C and I tested
each set before settling on the 183mm length.

>Also, changing the links is very likely to change the shape of the
>suspension curve - is this why you are on #4?  The linkage systems
>can be very complicated to figure out.

not really,... I had measured the ride heights and other vital data points
before changing  anything, then checked against the stats after each
change. My aim was to establish a link that gave me the same swingarm droop
angle (unloaded) in the first instance, from there it was a case of
establishing static sag settings on the shock and going for a ride.
Fortunatly Suzuki made the task easier as the spring rates are basically
the same for the GS and the RGV rear shocks( the RGV shock is slightly
longer) and there was a drawing for the linkage in the shop manual.

The process is time consuming, but thats part of the fun...

andrew horton
systems management
university of sydney
ph(02) 9351 5065
e-mail A Horton@records.usyd.edu.au

------------------------------

Date: Wed, 4 Jun 1997 20:41:22 -0700 (PDT)
From: Beth 
Subject: GSTwin question 

hey, i've got a 1982 GS450E/S and i've noticed that they're a little
deficient in the front braking department. now, i've got some experience
in metal fabrication...and i'm pretty good w/ a wrench. i'm wondering if
the bolt pattern on the disc on a more modern GS500E is the same as my old
450. from eyeballing both, it looks like a possibility. since the 500E has
been around, i'm sure there's gotta be some wrecked ones in the salvage
yards w/ good rotors and rebuildable callipers. i can fabricate a bracket
myself to mount the calliper to the fork...so that's not a problem.

anyone know for sure? if all else fails, i'm gonna go to the yard w/ one
of my spare rotors and check it out. it'd be a cool mod, eh?

- -Beth

                  DoD#4508, Unitrans#545, AMA#542204 
     Mine: 1982 GS450ES, 1980 GS450ES Projects: 1974 TX650, 1971 CL350
****************************************************************************
check out beffie's unfinished work of art(hah): http://home.cwnet.com/beffie

------------------------------

Date: Thu, 5 Jun 1997 10:06:28 +0100
From: JAS@Sport-Twin.com (John A. Sweeney)
Subject: GSTwin Re: "Plug&Play" [was GS rear wheel swap]

>Date: Mon, 2 Jun 1997 16:57:24 -0800
>From: "Michael Moore" 
>Subject: Re: GSTwin real wheel swap
>
>> According to the Euro-Spares web page, it says that the 4.5x17 rear rim off
>> of a GSXR750 (with the five spoke cush drive) is a plug-and-play installion
>> on the GS.
>
>Hello Robert,
>
>John Sweeney wrote the article - so any things that don't match up to
>what appears to be real life are his fault (or at least the fault of
>the person who gave him the faulty info) not mine!!!!

Hi GS list,
Don't recall ever using the phrase "plug&play" in that article. ;-)

John
ps: happy to print clarifications! :-)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
John A. Sweeney, S-TRA#000  -  Sport-Twin Riders Association
JAS@Sport-Twin.com - http://www.sport-twin.com
224 Ashbury St., San Francisco, CA  94117 - (415) 922-1436
Join Us! Newsletter, FREE Beefy-T. e-mail snail-address for sample 'letter
       

------------------------------

End of GSTwin-digest V1 #31
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GSTwin-digest           Sunday, June 8 1997           Volume 01 : Number 032




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Date: Sat, 7 Jun 1997 07:30:17 -0700
From: hwoien@juno.com (Harvey M Woien)
Subject: GSTwin fork oil

It appears that there are no fork oil drain plugs on my GS500E.
My Clymer manual indicates that fork oil is drained by removing
the fork legs and dumping the oil out the top.  I can't believe there
is no other way to drain the oil from the fork tubes.

What am I missing here?

Harvey Woien 

------------------------------

Date: Sat, 7 Jun 1997 10:07:53 -0800
From: "Michael Moore" 
Subject: Re: GSTwin fork oil

> It appears that there are no fork oil drain plugs on my GS500E.
> Harvey Woien 

Hello Harvey,

Just think how much cheaper Suzuki was able to sell you your bike by 
eliminating the drain plugs!  They probably figured that 99% of the 
riders don't even know there is oil in the forks, much less intending 
to change their fork oil.

The next thing you'll run across (if the GS is like the EX Kawasakis) 
is the economical use of a wire circlip to hold the top cap of the 
fork in place.  No more just unscrewing the cap - now you have to 
figure out how to compress the cap into the fork to expose the 
circlip for removal.  If you have a 2 or 3 leg puller you may be able 
to hook that over the triple clamp and then compress the cap into the 
fork leg.

I hate things like this.  Hopefully while you have the forks apart 
(be sure to check for machining swarf hanging in the damper rod 
holes) you'll drill and tap some drain plugs in the sliders.

Cheers,
Michael 
Michael Moore
Euro Spares, SF CA
Distributor of Lucas RITA and Powerbase products
Sole North American source of "The Racing Motorcycle: a technical guide for constructors"
http://www.eurospares.com
AFM/AHRMA #364

------------------------------

Date: Sat, 7 Jun 1997 23:41:36 -0400 (EDT)
From: TatiMB@aol.com
Subject: GSTwin '82-ish GS-300 Exhaust

I need a bargain...

      Dealer asks 'bout $700 for a complete exhaust system, J.C. Whitney
doesn't have nearly as complete an offering as they used to, and nobody
'round here (Nassau County, Long Island) 'repairs' old systems.   (I write it
like that 'cause I don't know what all will be involved 'till I remove it...
it's just majorly loud @ highway speeds!)

     I know that the mufflers are mostly shot, visible (but small) holes in
the end, and larger ones on the underside.  I'll know more when I can inspect
the top of the crossover pipe, but I think I feel exhaust coming out when I
stick my hands up in close. 

     This is one of the bikes I learned to ride on (10 years ago) and my
girlfriend will be doing the same.  So there are sentimental and practical
reasons for this (possible) outlay of $700... more than the value of the
bike(Even tho' that EXCEPT for the pipes, it's in MINT shape).

     Does anyone have any usable exhaust parts laying around, or know where
to find them?  (No local cycle salvage guys have any for this bike)

    Or, just as good, know someone that repairs old systems?  (I'm not that
good a welder!)

Me, my girlfriend, and the local noise police will thank you.  ;-)

B.J. Worsham

------------------------------

Date: Sun, 8 Jun 1997 15:41:57 -0400 (EDT)
From: MJBoltuc@aol.com
Subject: Re: GSTwin '82-ish GS-300 Exhaust

GS300.EXHAUST????
The  MAC exhaust for the 78-86 GS 400,425,450 all have the same part number.
The Parts Unlimited Catalog lists them for $200('93)
check MAC out and see if they can help

ken lehman
WERA se 643 nv

------------------------------

End of GSTwin-digest V1 #32
***************************
GSTwin-digest           Monday, June 9 1997           Volume 01 : Number 033




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Date: Sun, 8 Jun 1997 15:43:49 -0400 (EDT)
From: MJBoltuc@aol.com
Subject: Re: GSTwin question rotor options

The early GSXR's, the katana 600/750, bandits, and GS500E all have the same
bolt pattern to mount the rotors.

if  any body is interested I have a milk crate full of calipers. 2 and 4
piston type (F2,earlyGSXR,ZX7) .... cover the shipping($5-7) and donations
for FRANKENBIKE (or skip the donation, I don't care). I save them for
projects. If they get used, great.

ken lehman
WERAse 643nv

------------------------------

Date: Sun, 8 Jun 1997 21:57:02 -0700 (PDT)
From: Beth 
Subject: Re: GSTwin Is anyone there?

i agree on the take on the old GS twins. my bike is great! i do need some
better tyres, though... those old IRC's are crap!

- -Beth

                  DoD#4508, Unitrans#545, AMA#542204 
     Mine: 1982 GS450ES, 1980 GS450ES Projects: 1974 TX650, 1971 CL350
****************************************************************************
check out beffie's unfinished work of art(hah): http://home.cwnet.com/beffie

------------------------------

Date: 9 JUN 97 09:50:31 EDT
From: AGabinet@dechert.com
Subject: re: GSTwin '82-ish GS-300 Exhaust

BJ -- give a call to A & J Cycle salvage, near the Philadelphia airport; 
(610) 521-6700 (fax 610 521 6868).  They have tons of parts for UJM's, 
although I can't guarantee exhaust for your bike.  I got forks for mine.

Ari Gabinet
'90 GS500E
- -------------
Original Text
From: suzuki-gs-twin(a)list.sirius.com, on 6/7/97 11:42 PM:
I need a bargain...

      Dealer asks 'bout $700 for a complete exhaust system, J.C. Whitney
doesn't have nearly as complete an offering as they used to, and nobody
'round here (Nassau County, Long Island) 'repairs' old systems.   (I write 
it
like that 'cause I don't know what all will be involved 'till I remove 
it...
it's just majorly loud @ highway speeds!)

     I know that the mufflers are mostly shot, visible (but small) holes in
the end, and larger ones on the underside.  I'll know more when I can 
inspect
the top of the crossover pipe, but I think I feel exhaust coming out when I
stick my hands up in close. 

     This is one of the bikes I learned to ride on (10 years ago) and my
girlfriend will be doing the same.  So there are sentimental and practical
reasons for this (possible) outlay of $700... more than the value of the
bike(Even tho' that EXCEPT for the pipes, it's in MINT shape).

     Does anyone have any usable exhaust parts laying around, or know where
to find them?  (No local cycle salvage guys have any for this bike)

    Or, just as good, know someone that repairs old systems?  (I'm not that
good a welder!)

Me, my girlfriend, and the local noise police will thank you.  ;-)

B.J. Worsham

------------------------------

Date: 9 JUN 97 10:00:18 EDT
From: AGabinet@dechert.com
Subject: GSTwin fork oil

Harvey -- my shop manual indicates there was a special tool for removing 
the fork seals. I have no idea where to get one.  I'd be very interested in 
your report of how it goes, taking the forks apart.

By the way, heresy for this list, but my local wrecker towed what looks 
like a FZR1000 (a couple of years old) a few months ago.  He's about to get 
the salvage title on it.  I wasn't crashed, just towed.  Anyone have 
comments on whether this is a good project bike?
- -------------
Original Text
From: suzuki-gs-twin(a)list.sirius.com, on 6/7/97 10:30 AM:
It appears that there are no fork oil drain plugs on my GS500E.
My Clymer manual indicates that fork oil is drained by removing
the fork legs and dumping the oil out the top.  I can't believe there
is no other way to drain the oil from the fork tubes.

What am I missing here?

Harvey Woien 

------------------------------

Date: 9 JUN 97 10:28:20 EDT
From: AGabinet@dechert.com
Subject: GSTwin four piston calipers

Ken -- do the 4 piston calipers fit the GS500 mounting holes? -- Ari Gabinet
- -------------
Original Text
From: suzuki-gs-twin(a)list.sirius.com, on 6/8/97 3:50 PM:
The early GSXR's, the katana 600/750, bandits, and GS500E all have the same
bolt pattern to mount the rotors.

if  any body is interested I have a milk crate full of calipers. 2 and 4
piston type (F2,earlyGSXR,ZX7) .... cover the shipping($5-7) and donations
for FRANKENBIKE (or skip the donation, I don't care). I save them for
projects. If they get used, great.

ken lehman
WERAse 643nv

------------------------------

Date: Mon, 9 Jun 1997 23:08:53 -0400 (EDT)
From: MJBoltuc@aol.com
Subject: Re: GSTwin four piston calipers

The 4 pots that I have will NOT fit a GS without making an adaptor plate.
Wade Buffington(75ish HP GS500E) explained this one to me on making the
adaptors.  Mount up the caliper and apply the brake(tie it down with a rag)
make the measurements for the adaptor plates.  This ensures that the caliper
is properly centered.

Well, I took Track Dog vintage racing on Sat (6/7/97) at Roebling
Roads(Savannah GA)  I did really crappy, But I had a blast.  The track was
wet in the morning but dried out later on in the day.  I came in last in
vintage 4(5th place) track still wet(1:53's)  In vintage 5, I was down to
1:38's(track started to dry) and in the SOLO 20 I had THE MOST FUN.  I raced
against a Duck 750 for about 10 laps.  I could keep up in the corners and he
could just barely pull away on the straight.  1:34's, 
not bad for two year old 591's.   They didn't even ball up...Hard as a rock.
Time for some new shoes for Track Dog.

------------------------------

End of GSTwin-digest V1 #33
***************************
GSTwin-digest          Tuesday, June 17 1997          Volume 01 : Number 034




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Date: Mon, 9 Jun 1997 23:10:51 -0400 (EDT)
From: MJBoltuc@aol.com
Subject: Re: GSTwin fork oil

subject...FZR1000
if its a 87 or 88 they have weak motors and crappy handling
89 or newer they are wet dream bikes
either way you could make a fortune parting the thing out over the internet
 
ken

------------------------------

Date: Tue, 10 Jun 1997 10:27:06 -0800 (PST)
From: Dan Wang 
Subject: GSTwin GS500 head porting?

I finally pulled the head on my GS500E to remove that broken bolt. There
was some major carbon buildup (like 1/8" thick) after 40k miles. Wonder
how that happened?

Is it worth making performance mods to the head while it's off? I still
have the stock pipes and airbox. 

Also, has anyone priced gaskets for a full rebuild? Dennis Kirk wants $115
for an aftermarket Vesrah kit.

Dan

------------------------------

Date: Tue, 10 Jun 1997 16:30:44 -0800
From: "Michael Moore" 
Subject: Re: GSTwin GS500 head porting?

> Is it worth making performance mods to the head while it's off? I still
> have the stock pipes and airbox. 

Hello Dan,

After 40K miles you will at least want a good valve job done.  With 
everything else stock you'd really need to have the head looked at by 
an experienced porter to see if there are any changes worth doing 
that would benefit an otherwise stock engine.

At minimum, go through the port smoothing off lumps sticking out from 
the port wall (not reshaping the port, just eliminating stuff that 
shouldn't be there), and spend a little time ensuring that your 
intake manifolds match up very closely to the intake ports.  
Mismatches where the downhill part is bigger aren't of too much 
concern, but if the downhill (head) side sticks out into the flow you 
want to match it to the manifold.

Cheers,
Michael 
Michael Moore
Euro Spares, SF CA
Distributor of Lucas RITA and Powerbase products
Sole North American source of "The Racing Motorcycle: a technical guide for constructors"
http://www.eurospares.com
AFM/AHRMA #364

------------------------------

Date: Tue, 17 Jun 1997 08:26:49 -0700 (PDT)
From: Beth 
Subject: GSTwin here's a question...

has anyone ever installed a volt meter on their bike? the reason i want to
is...well, ya'll know how shitty the charging systems are on the old GS
series bikes. i am thinking of installing one and keeping an eye on it as
i ride around. i have done extensive testing on the charging system and
everything seems to be okay...but then i stall at a light and then my
engine won't turn over because the battery's flat! argh! could be that i
need a new battery. i will look into that, of course. but, it'd be trick
to have a volt meter in there as well to just check things out.

what i want to know is, how does one wire one in? i'm not much of a
electricity person, although i *did* get an A+ in electricity/magnetism
physics...but, of course, i've forgotten a lot of it. :) anyhow, i know i
need to wire it so it's switchable w/ the ignition. i have a few ideas but  
i want to know which one is the RIGHT way. :) thanks in advance!
what's the BEST way to do it.

- -Beth

                  DoD#4508, Unitrans#545, AMA#542204 
     Mine: 1982 GS450ES, 1980 GS450ES Projects: 1974 TX650, 1971 CL350
****************************************************************************
check out beffie's unfinished work of art(hah): http://home.cwnet.com/beffie

------------------------------

End of GSTwin-digest V1 #34
***************************
GSTwin-digest         Wednesday, June 18 1997         Volume 01 : Number 035




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Date: Tue, 17 Jun 1997 13:40:59 -0400
From: Brad Babcock 
Subject: Re: GSTwin here's a question...

Hi Beth,
I'm no whiz at things electrical, but here's what I'd do.  All the manuals
say to check the health of the charging system with a voltmeter between the
reg/rec and the battery, so that's how I'd wire it.  In the worst case,
you'd have to install about 6' of 14 ga. wire from the reg/rec to the
handlebars or thereabouts, and back to the battery.  If a look at the
schematic or placement of the voltmeter on the bike shows a better way, you
might even get by with less.  Now, all the folks with the real scoop tell
me where I'm wrong :-).
Brad
>has anyone ever installed a volt meter on their bike? the reason i want to
>is...well, ya'll know how shitty the charging systems are on the old GS
>series bikes. i am thinking of installing one and keeping an eye on it as
>i ride around. i have done extensive testing on the charging system and
>everything seems to be okay...but then i stall at a light and then my
>engine won't turn over because the battery's flat! argh! could be that i
>need a new battery. i will look into that, of course. but, it'd be trick
>to have a volt meter in there as well to just check things out.
>
>what i want to know is, how does one wire one in? i'm not much of a
>electricity person, although i *did* get an A+ in electricity/magnetism
>physics...but, of course, i've forgotten a lot of it. :) anyhow, i know i
>need to wire it so it's switchable w/ the ignition. i have a few ideas but
>i want to know which one is the RIGHT way. :) thanks in advance!
>what's the BEST way to do it.
>
>-Beth
>
>                  DoD#4508, Unitrans#545, AMA#542204
>     Mine: 1982 GS450ES, 1980 GS450ES Projects: 1974 TX650, 1971 CL350
>****************************************************************************
>check out beffie's unfinished work of art(hah): http://home.cwnet.com/beffie

------------------------------

Date: Tue, 17 Jun 1997 17:38:59 -0400
From: "matthew Bergin" 
Subject: GSTwin Re: here's a question...

The best place to hook up a voltmeter is on the ignition wire going to the
regulator. This wire is switched by the ignition switch and is the voltage
reference for the regulator. The negative lead of the meter can go to any
frame ground. IMHO I would get a stand alone multimeter instead of a
automotive add on type because I find the multimeter far more useful for
many other things around the house. I just measure the alternator output at
the battery at 3500 rpm once in a while. You are looking for between 13.5
and 14.5 volts at 3500 rpm.



  " VIOLENCE IS THE LAST REFUGE OF THE INCOMPETENT"
                                                  -Salvor Hardin-


  Matthew Bergin ( Buffalo Rider )
matt@networx.on.ca

1972 GT750 ( Dual disk conversion, I like to stop!!! )
1975 Z50A K5 ( For my eight year old son. ) 

------------------------------

Date: Tue, 17 Jun 1997 15:38:07 -0700 (PDT)
From: Beth 
Subject: GSTwin Re: here's a question...

thanks for the imput guys! :) i already know the voltage and amp draw that
this machine needs. btw, it's 13.5-15.0 at 5000 RPM and 5 at 5000 RPM, per
the service manual. regardless, i have a good idear where i'm gonna wire
this sucker in. :) might throw an amp meter in as well. :)

- -Beth

                  DoD#4508, Unitrans#545, AMA#542204 
     Mine: 1982 GS450ES, 1980 GS450ES Projects: 1974 TX650, 1971 CL350
****************************************************************************
check out beffie's unfinished work of art(hah): http://home.cwnet.com/beffie

------------------------------

Date: Tue, 17 Jun 1997 17:06:28 -0700
From: hwoien@juno.com (Harvey M Woien)
Subject: Re: GSTwin voltmeter

>Date: Tue, 17 Jun 1997 08:26:49 -0700 (PDT)
>From: Beth 
>Subject: GSTwin here's a question...
>
>has anyone ever installed a volt meter on their bike? the reason i 

Hi Beth,

A volt meter is a neat idea, easier to install than an ammeter, but
more difficult to interpret. An ammeter shows either a net charge
or a net discharge. A voltmeter must be read and evaluated. 
A proper functioning charging system should indicate 13 volts or more.
A reading of 12 volts or less indicates that something is wrong.
Better yet, watch the meter when revving the engine from idle to
about 3 krpm, the voltmeter needle should rise a volt or two, depending
on the state of charge of the battery.

The voltmeter should be connected to any switched hot terminal.
Doesn't matter which one, really. A good place is the "ign" side
of the ignition switch.

Another quick way to check charging system performance is to shine
the headlamp at a reflective surface (such as a garage door) at night.
Let the engine idle for about a minute with all the lights on, grab
 the brake to illuminate the stop light too. Then bring the engine
speed quickly up to about 3 krpm and observe that the headlamp
reflection becomes slighter brighter. This may be subtle, so watch
carefully. Not as good a check as a voltmeter, but it does work.

Good luck!

Harvey

------------------------------

Date: 18 JUN 97 08:04:42 EDT
From: AGabinet@dechert.com
Subject: GSTwin Yamaha heresy revisited

It looks like I'm going to pick up an '86 FZR600S as a project bike.  Does 
anyone know if there's a similar mailing list for FZR enthusiasts?  (I've 
been warned about the difficulty of the 5 valve per cylinder setup -- but 
if the bike needs that kind of work I'll let a pro do it).

The new front end set up on my GS is much nicer than the old one, the 
lowered forks and clipons have a noticeable effect on steering; what's the 
collective wisdom on fork springs, fork oil weight and volume for these 
bikes?  I'd like to think the front could get a little stiffer, allowing 
better traction under acceleration (such as it is with this bike) and a 
little less dive.

Ari Gabinet - 90 GS500E  (and soon a beaten FZR!)
- -------------
Original Text
From: suzuki-gs-twin(a)list.sirius.com, on 6/17/97 6:39 PM:
thanks for the imput guys! :) i already know the voltage and amp draw that
this machine needs. btw, it's 13.5-15.0 at 5000 RPM and 5 at 5000 RPM, per
the service manual. regardless, i have a good idear where i'm gonna wire
this sucker in. :) might throw an amp meter in as well. :)

- -Beth

                  DoD#4508, Unitrans#545, AMA#542204 
     Mine: 1982 GS450ES, 1980 GS450ES Projects: 1974 TX650, 1971 CL350
****************************************************************************
check out beffie's unfinished work of art(hah): 
http://home.cwnet.com/beffie

------------------------------

Date: Wed, 18 Jun 1997 17:18:21 -0800
From: "Michael Moore" 
Subject: Re: GSTwin Yamaha heresy revisited

> It looks like I'm going to pick up an '86 FZR600S as a project bike.  Does 
> anyone know if there's a similar mailing list for FZR enthusiasts?  (I've 
> Ari Gabinet - 90 GS500E  (and soon a beaten FZR!)

Hello Ari,

I have a link on my misc links site to the Mailing List Roundup - if 
there is an FZR list it will be listed on the Roundup.

Cheers,
Michael
Michael Moore
Euro Spares, SF CA
Distributor of Lucas RITA and Powerbase products
Sole North American source of "The Racing Motorcycle: a technical guide for constructors"
http://www.eurospares.com
AFM/AHRMA #364

------------------------------

End of GSTwin-digest V1 #35
***************************
GSTwin-digest         Saturday, June 21 1997         Volume 01 : Number 036




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Date: Thu, 19 Jun 1997 11:21:50 -0700
From: "Lai, Hubert" 
Subject: GSTwin For Sale: 1983 Suzuki GS400

For Sale: 1983 Suzuki GS400.

Location: Vancouver, British Columbia

Description: It's good-looking bike but it is a 14-year old motorcycle.
This has been a reliable, fun bike for my wife to learn on. Now she
wants to move up to something bigger, faster, and sportier, so this one
is up for sale to the highest bidder.  It has new front and rear brake
pads and clutch cable.  Everything is in perfect running order on the
bike except the odometer, which stopped at 16,999 km.  However, we have
been keeping track of the mileage using the trip meter, and the total
mileage is now 27,672 km. We have the maintenance records for the bike,
and the regulator was replaced last year.

Price: We are looking for CAN$1,100.

Contact: If you would like more details or want to make arrangements to
view the bike, please drop me an e-mail at hubert.lai@ubc.ca or give me
a call at 688-2489. PLEASE REPLY DIRECTLY, as I will be unsubscribing
from this list shortly.

Cheers!

<=- Hubert ('96 900SP)

=========================
Hubert Lai
Legal Counsel
The University of British Columbia
E-mail: hubert.lai@ubc.ca
=========================

------------------------------

Date: Fri, 20 Jun 1997 07:37:07 -1000 (HST)
From: straubis@pixi.com (Straub Tech)
Subject: GSTwin Need Parts

Hello everyone,

As some of you know, I'm in the middle of a rear wheel swap (3.5 to 4.5).
I've taken a few measurements and gotten a few from another lister.

I had the parts cut to size and the rim fits in the swingarm fine...  One
small problem,  when I measured the parts to cut, I forgot about the
rotor-caliper-bracket distance.  So while the rim fits, the caliper won't
fit over the rotor.  Doh!

So.... 

I need a replacement brake bracket and spacer (brake side) for the 91 GS500.

Any one got them??

Robert

------------------------------

Date: Sat, 21 Jun 1997 20:43:22 -0800
From: "Michael Moore" 
Subject: GSTwin Another photo

I've just uploaded a picture of some modern girder forks that Tony
Foale made for a customer.  Tony was surprised at how well they
worked, and thought they had some advantages over telescopics.

It's at the top of the "Tony Foale" section on the graphics page of my
web site.

Cheers,
Michael
Michael Moore
Euro Spares, SF CA
Distributor of Lucas RITA and Powerbase products
Sole North American source of "The Racing Motorcycle: a technical guide for constructors"
http://www.eurospares.com
AFM/AHRMA #364

------------------------------

End of GSTwin-digest V1 #36
***************************
GSTwin-digest          Friday, June 27 1997          Volume 01 : Number 037




----------------------------------------------------------------------

Date: Fri, 27 Jun 1997 10:17:40 -0800
From: "Michael Moore" 
Subject: GSTwin Lots more photos

I've just added a number of photos to my web site's graphics page.

Included are shots of one of Tony Foale's racing sidecars, details of
the Q2 rear axle setup, and shots of a FF bike to which Tony assisted
the owner in fitting one of his QL front ends.

There are some new photos of Ollie McKagen's alternative front end
dirt bikes, and one of his projects with a space frame and
old-fashioned telescopic fork.

I've also (over the last few days) added pictures of various small
Italian ISDT bikes, a page for my Laverda 150 vintage MX project, and
some other stuff that escapes me at the moment.

Cheers,
Michael
Michael Moore
Euro Spares, SF CA
Distributor of Lucas RITA and Powerbase products
Sole North American source of "The Racing Motorcycle: a technical guide for constructors"
http://www.eurospares.com
AFM/AHRMA #364

------------------------------

Date: Fri, 27 Jun 1997 15:43:53 -0700
From: hwoien@juno.com (Harvey M Woien)
Subject: GSTwin maintenance

Perusing the Clymer manual I noticed a humorous item in the routine
maintenance section.  Though not called for in the maintenance
table (Table 1), Clymer recommends removing the gear change lever
and cleaning/lubricating the splines!  There is no relative motion
between the lever and the shaft, so no lubrication of the splines
should be necessary. I suppose Clymer is worried about rust siezing
the lever onto the shaft, grease would preclude this.

Another lubrication item - the clutch and throttle control cable ends,
was referenced by Clymer but not indicated in Table 1.  All new bikes
that I have checked are lacking any lubricant whatsoever in this area.
So I always make it a point to lube the cable ends where they are
most likely to fail. A bit of chain lube in the metal tube elbow part of
the cables and some white gease on any exposed cable will go a long
way towards not getting "stranded" at the side of the road 
(pun intended). 

Harvey Woien

------------------------------

Date: Fri, 27 Jun 1997 16:32:13 -0800
From: "Michael Moore" 
Subject: GSTwin Sears Point this Sunday

I'll be running a 250 Ducati at the AFM race this Sunday (if nothing
prevents it getting from Nevada to the Bay Area today) so anyone so
inclined please stop by and say hello.  The bike will either have my
race number 364 on its fairing, or the owner's number if I run out of
time (but there shouldn't be too many full fairing equipped Ducati
singles there to sort through).

I'll also have some copies of John Bradley's book with me if you want
to take a first-hand look at it.

Cheers,
Michael
Michael Moore
Euro Spares, SF CA
Distributor of Lucas RITA and Powerbase products
Sole North American source of "The Racing Motorcycle: a technical guide for constructors"
http://www.eurospares.com
AFM/AHRMA #364

------------------------------

Date: Fri, 27 Jun 1997 17:46:05 -0800
From: "Michael Moore" 
Subject: GSTwin Some list stats and administrative hectoring

I thought I'd update everyone on the different lists' standing after
nearly 3 months of existance.

The current subscribers/list are:

97  Motorcycle Chassis Design
74  Vintage Roadrace
51  Vintage Dirt
32  Lightweight Roadrace
29  Suzuki GS Twins

This was prompted by several messages I've gotten over the last few
days wondering about the lack of traffic on some of the lists.

Well, we can't ALL be lurkers and expect to have anything to read on
the lists.  The chassis list seems to chug along pretty steadily, but
some of the smaller lists have gone for 5 or 6 days recently without a
post.  I try to post something if I notice a lack of traffic, but I
don't always have a ready list-related topic (nor do I always notice
the dearth of posts).  Besides, even I'm not going to believe you ALL
signed on to the lists just to read my posts (certainly no more than
60% will fall into this category).

I started these lists because 1) I'm interested in the topics and
wasn't seeing enough related posts on the 11 other lists that I'm on,
and 2) I thought there would be enough other people also interested in
these topics for me to justify $25/month to pay for the lists (yes, I
do have this streak of altruism that I've so far been unable to
eradicate).

As long as the lists generate enough traffic to keep me interested
I've got no problem with hosting the lists - after all it doesn't take
much for me to justify $5/month for a list since that's a pretty cheap
price for a month's entertainment.

The lists aren't taking much time to administer since I stopped 
authorizing all sub/unsub actions, though I notice that every now and
again majordomo will pick somebody's sub/unsub to forward to me for
approval.

So write something now and then - even the small lists have enough
people for a post/day from a different person.  I think it is safe to
presume that everyone knows how to type?!

I know I'm not the only one with a number of oddball projects, and I
wouldn't even mind hearing about some normal projects, if that isn't
an oxymoron.  

The vintage lists have got about 60-70 years of history to draw on
(some of the roadrace stuff is also applicable to the lightweight-RR
list, so that list has got about 80-90 years to draw on), the chassis
design list doesn't seem to have any problems, and the GS list at
least has the benefit of current motorcycles, some of which should be
in near daily use.  There are probably enough $200 GS-400s out there
that everyone on the other lists could go out and buy one in order to
justify joining the GS list and post to it.

PICTURES!!??  Would pictures of your list related bikes spark some
conversation?  If I have to I'll set up a section for each list on the
web site to post list members bikes if you think that would start some
conversations going:

"Hey Vern, did you know that you've got an incorrect 25/59ths left
handed prawn nut on your bike?  That was only offered on the Emile
Zola replica motoball bike produced in '06, and yours is the '07 Phil
Irving Repco special".

C'mon, c'mon, c'mon.  You must have had some reason for joining the
lists - tell us about it.

Thanks to those who have been contributing on a steady basis - I'm
sure they'll be glad to carry the main load if the rest of you will
chime in now and again.

DIGESTS:  Does anyone have a suggestion for an easy way that I can
make the old digests available, or is there any interest in this?  I
suppose I could just save them with an .htm extension and use a set of
 tags at top and bottom so they could be read off the web
site. 

OK, the soapbox is now available for someone else - don't be shy.

Cheers,
Michael 
Michael Moore
Euro Spares, SF CA
Distributor of Lucas RITA and Powerbase products
Sole North American source of "The Racing Motorcycle: a technical guide for constructors"
http://www.eurospares.com
AFM/AHRMA #364

------------------------------

End of GSTwin-digest V1 #37
***************************
GSTwin-digest          Tuesday, July 1 1997          Volume 01 : Number 038




----------------------------------------------------------------------

Date: Tue, 1 Jul 1997 23:22:20 +1000 (EST)
From: d.weiszmann@unsw.edu.au (Dorothy Weiszmann)
Subject: GSTwin Reply & excuses to hectoring :)

G'day guys & gals on list,

>Well, we can't ALL be lurkers and expect to have anything to read on
>the lists.  

Mm. Umm. I got great excuses! Lets see, is winter & I've had the rotten flu
for a *month* & not been doing much riding, and i'm too broke to do any
exciting modifications. But here, i'll fill youse in on my bike lately:

My big plan is to put a pre-loved GSXR front disc on my GS500E as used GS
parts are rare around here. I do have a little question for the technical
dudes out there actually, that is, the GSXR disc seems to be a good fit
except that the swept area is wider than necessary, I suppose the GSXR
caliper is bigger. It looks like it would work but is it going to be counter
productive to carry around that extra bit of weight if its not useful? Its
not a racebike but.. you know.. no need to hinder it any. Unsprung weight &
all that stuff. Also will it wear in a bad way if the brakepads only work on
2/3rds of it?

The only interesting thing done to my bike this year apart from a crash is a
one size fatter tyre on the back which has settled the back end quite
nicely. It has a strange feel to it now as the back steers slower than the
front somehow, but its pretty good anyway, much better than it was, and when
its front tyre time I'll put a matching one on the front & all will be
excellently cool :) I hope.

>PICTURES!!??  Would pictures of your list related bikes spark some
>conversation?  If I have to I'll set up a section for each list on the
>web site to post list members bikes if you think that would start some
>conversations going:

Hey yeah that'd be great. Especially the racebikes. Close-ups of the clever
bits please :)
I could contribute by scanning some informative pictures of the dents you
get in your tank from clip-on handlebars vs. the dents you get from stock
handlebars. Unfortunately but conveniently you can see em both in the one
photograph.

cheers
cath.

'89 gs500e
'77 r100s
sydney australia.

------------------------------

Date: 1 JUL 97 09:35:12 EDT
From: AGabinet@dechert.com
Subject: re: GSTwin Reply & excuses to hectoring :)

Gee Cath, could we photos of the broken fingers that you get when your clip 
ons pin your finger twixt bar ant tank too -- and compare them to what 
happens with the stock bars . . .  OUch!  I hate it when that happens . . . 
- -

Ari Gabinet '90 GS500E (Spec II fairing, telefix clip-ons on lowered forks, 
waiting for the guts to do springs, tires and some kind of performance 
enhancement)
- -------------
Original Text
From: suzuki-gs-twin(a)list.sirius.com, on 7/1/97 9:28 AM:
G'day guys & gals on list,

>Well, we can't ALL be lurkers and expect to have anything to read on
>the lists.  

Mm. Umm. I got great excuses! Lets see, is winter & I've had the rotten flu
for a *month* & not been doing much riding, and i'm too broke to do any
exciting modifications. But here, i'll fill youse in on my bike lately:

My big plan is to put a pre-loved GSXR front disc on my GS500E as used GS
parts are rare around here. I do have a little question for the technical
dudes out there actually, that is, the GSXR disc seems to be a good fit
except that the swept area is wider than necessary, I suppose the GSXR
caliper is bigger. It looks like it would work but is it going to be 
counter
productive to carry around that extra bit of weight if its not useful? Its
not a racebike but.. you know.. no need to hinder it any. Unsprung weight &
all that stuff. Also will it wear in a bad way if the brakepads only work 
on
2/3rds of it?

The only interesting thing done to my bike this year apart from a crash is 
a
one size fatter tyre on the back which has settled the back end quite
nicely. It has a strange feel to it now as the back steers slower than the
front somehow, but its pretty good anyway, much better than it was, and 
when
its front tyre time I'll put a matching one on the front & all will be
excellently cool :) I hope.

>PICTURES!!??  Would pictures of your list related bikes spark some
>conversation?  If I have to I'll set up a section for each list on the
>web site to post list members bikes if you think that would start some
>conversations going:

Hey yeah that'd be great. Especially the racebikes. Close-ups of the clever
bits please :)
I could contribute by scanning some informative pictures of the dents you
get in your tank from clip-on handlebars vs. the dents you get from stock
handlebars. Unfortunately but conveniently you can see em both in the one
photograph.

cheers
cath.

'89 gs500e
'77 r100s
sydney australia.

------------------------------

Date: Tue, 01 Jul 1997 10:00:20 -0500
From: kurt 
Subject: GSTwin New to list, introduction to all...

Howdy all,

  I just signed joined upand thought I'd say hey and give you all something
else to read.  I've been riding my GS500 for 13 months now to the tune of
8000 miles or so, no single trip being over 120 miles.  So I've given the
starter quite a workout this year.  As far as mods, I've replaced the fork
springs with Progressives, an easy upgrade if you have a manual or know what
you're doing, and well worth any time and money invested.  No bottoming when
you run over a toad or crack in the road; minimal diving at every stoplight.
I found that I only needed 1/4 to 1/2 inch preload spacer instead of the 3/4
suggested by progressive, and 15W fork oil seems to work well for my 6'
200lbs self.  I also switched to a braided front brake line, and some EBC
pads.  I've just now got the pads broken in well, and they give a little
more feedback than the stock pads.  (cheaper too).  I cut away the visible
portion of the rear fender (the black plastic portion that hangs below the
tail light, just to clean things up a bit and increase my squidly image.
Last but not least was a UNI foam air filter to help me get over the sticker
shock on a stock paper unit ($42 american).  Unfortunately, I've having a
little carb trouble now, and I think the air filter may be the culprit.  The
airflow may be a little to heavy now, and I don't have teh money for a jet
kit, so I may be back to the stock paper filter soon.

  Well, that's about it.  I'll quit babbling for now and listen for awhile.
Just wanted to say hello.

   Kurt
    knowlwk@mail.auburn.edu
    92 GS500E, Auburn Alabama, USA

------------------------------

Date: 1 JUL 97 11:09:19 EDT
From: AGabinet@dechert.com
Subject: re: GSTwin New to list, introduction to all...

In view of Kurt's comments about his air filter and lack of funds for a jet 
kit, does anyone have a view about jetting a GS Twin?  Is there a kit 
available, and what kind of performance enhancement does it produce?  Is it 
worth doing without changing the flow in other places (ie cans and air 
filter)? 

Ari Gabinet
'90 GS500E
- -------------
Original Text
From: suzuki-gs-twin(a)list.sirius.com, on 7/1/97 11:02 AM:
Howdy all,

  I just signed joined upand thought I'd say hey and give you all something
else to read.  I've been riding my GS500 for 13 months now to the tune of
8000 miles or so, no single trip being over 120 miles.  So I've given the
starter quite a workout this year.  As far as mods, I've replaced the fork
springs with Progressives, an easy upgrade if you have a manual or know 
what
you're doing, and well worth any time and money invested.  No bottoming 
when
you run over a toad or crack in the road; minimal diving at every 
stoplight.
I found that I only needed 1/4 to 1/2 inch preload spacer instead of the 
3/4
suggested by progressive, and 15W fork oil seems to work well for my 6'
200lbs self.  I also switched to a braided front brake line, and some EBC
pads.  I've just now got the pads broken in well, and they give a little
more feedback than the stock pads.  (cheaper too).  I cut away the visible
portion of the rear fender (the black plastic portion that hangs below the
tail light, just to clean things up a bit and increase my squidly image.
Last but not least was a UNI foam air filter to help me get over the 
sticker
shock on a stock paper unit ($42 american).  Unfortunately, I've having a
little carb trouble now, and I think the air filter may be the culprit.  
The
airflow may be a little to heavy now, and I don't have teh money for a jet
kit, so I may be back to the stock paper filter soon.

  Well, that's about it.  I'll quit babbling for now and listen for awhile.
Just wanted to say hello.

   Kurt
    knowlwk@mail.auburn.edu
    92 GS500E, Auburn Alabama, USA

------------------------------

End of GSTwin-digest V1 #38
***************************
GSTwin-digest          Tuesday, July 1 1997          Volume 01 : Number 039




----------------------------------------------------------------------

Date: Wed, 2 Jul 1997 08:56:38 +1000 (EST)
From: d.weiszmann@unsw.edu.au (Dorothy Weiszmann)
Subject: re: GSTwin Reply & excuses to hectoring :)

>Gee Cath, could we photos of the broken fingers that you get when your clip 
>ons pin your finger twixt bar ant tank too -- and compare them to what 
>happens with the stock bars . . .  OUch!  I hate it when that happens . . . 
>-
>
>Ari Gabinet '90 GS500E (Spec II fairing, telefix clip-ons on lowered forks, 
>waiting for the guts to do springs, tires and some kind of performance 
>enhancement)
>-------------

Sorry to disappoint you :) Haven't managed to do that yet. 

Hey do them springs! Transforms the bike from a dangerous bag of shite to a
real bike..

cath.

------------------------------

Date: 1 JUL 97 19:15:48 EDT
From: AGabinet@dechert.com
Subject: re: GSTwin Reply & excuses to hectoring :)

Cath -- your australian compatriot Andrew Horton discouraged me from using 
Progressives.  he thinks a standard rate spring (but a better one than 
stock) is a better answer.  He posted something about this in the last two 
weeks, if I can dig it up I'll try to forward it to you.

Ari Gabinet
- -------------
Original Text
From: suzuki-gs-twin(a)list.sirius.com, on 7/1/97 6:58 PM:
>Gee Cath, could we photos of the broken fingers that you get when your 
clip 
>ons pin your finger twixt bar ant tank too -- and compare them to what 
>happens with the stock bars . . .  OUch!  I hate it when that happens . . 
. 
>-
>
>Ari Gabinet '90 GS500E (Spec II fairing, telefix clip-ons on lowered forks,
 
>waiting for the guts to do springs, tires and some kind of performance 
>enhancement)
>-------------

Sorry to disappoint you :) Haven't managed to do that yet. 

Hey do them springs! Transforms the bike from a dangerous bag of shite to a
real bike..

cath.

------------------------------

Date: 1 Jul 1997 16:36:37 -0700
From: "Jonathan Forman" 
Subject: Re: GSTwin Reply & excuses 

        Reply to:   RE>>GSTwin Reply & excuses to hectoring :)

When I first started racing, I used progressive springs in my GS500-at the time I thought they were great.  However, after a crash I had Lindeman Engineering set up the forks, along with everything else they did the progressive springs were removed and re

Jon Forman
AFM/WSMC #654
jonathan_forman@affmetrix.com 

------------------------------

Date: Wed, 2 Jul 1997 11:19:44 +1000
From: A.Horton@records.usyd.edu.au (andrew horton)
Subject: Re: GSTwin Reply & excuses to hectoring :)

>G'day guys & gals on list,

>cath.
>
>'89 gs500e
>'77 r100s
>sydney australia.

Cath,.. drop me a line asap if you are interested in the info another
Sydney GS500 nutter has to offer. I have previously lobbed a big post to
the gs list which you may have, if not I can post it on. Maybe a run up the
old road is a possibility sometime.

andrew horton
systems management
university of sydney
ph(02) 9351 5065
e-mail A Horton@records.usyd.edu.au

------------------------------

Date: Wed, 2 Jul 1997 11:44:15 +1000
From: A.Horton@records.usyd.edu.au (andrew horton)
Subject: re: GSTwin New to list, introduction to all...

>In view of Kurt's comments about his air filter and lack of funds for a jet
>kit, does anyone have a view about jetting a GS Twin?  Is there a kit
>available, and what kind of performance enhancement does it produce?  Is it
>worth doing without changing the flow in other places (ie cans and air
>filter)?


What worked for me and my GS500 was to raise the needle one notch (the
needle has a variety of positions) and turn pilot mixture screws out 3/4 of
a turn from standard. Its an easy job once the tank is off, costs nout and
fills in that midrange trough

andrew horton
systems management
university of sydney
ph(02) 9351 5065
e-mail A Horton@records.usyd.edu.au

------------------------------

Date: Wed, 2 Jul 1997 11:59:50 +1000
From: A.Horton@records.usyd.edu.au (andrew horton)
Subject: re: GSTwin Reply & excuses to hectoring :)

>Cath -- your australian compatriot Andrew Horton discouraged me from using
>Progressives.  he thinks a standard rate spring (but a better one than
>stock) is a better answer.  He posted something about this in the last two
>weeks, if I can dig it up I'll try to forward it to you.
>
>Ari Gabinet

My fame spreads,... Actually i suggested a straight rate, but stiffer than
standard spring. sorry if I did'nt make it clear...

andrew horton
systems management
university of sydney
ph(02) 9351 5065
e-mail A Horton@records.usyd.edu.au

------------------------------

Date: Wed, 2 Jul 1997 15:24:00 +1000 (EST)
From: d.weiszmann@unsw.edu.au (Dorothy Weiszmann)
Subject: re: GSTwin Reply & excuses to hectoring :)

>Cath -- your australian compatriot Andrew Horton discouraged me from using 
>Progressives.  he thinks a standard rate spring (but a better one than 
>stock) is a better answer.  He posted something about this in the last two 
>weeks, if I can dig it up I'll try to forward it to you.
>
>Ari Gabinet
>-------------

I don't know what brand springs are in my bike, I remember at the time my
bike shop couldn't get progressive springs for it, so they must be normal
sorta springs. But longer than stock, as when we pulled the old ones out,
they were quite short with a really long spacer. Looked weird even to me, &
I dunno nothin. Then some time later a friend who knows stuff borrowed the
bike & set it up nicely at the front with spacers made from microphone stand
tube & I've been happy ever since :) 

cath.

------------------------------

End of GSTwin-digest V1 #39
***************************
GSTwin-digest          Thursday, July 3 1997          Volume 01 : Number 040




----------------------------------------------------------------------

Date: Wed, 2 Jul 1997 15:49:36 +1000 (EST)
From: d.weiszmann@unsw.edu.au (Dorothy Weiszmann)
Subject: Re: GSTwin Reply & excuses to hectoring :)

Hi Andrew,

Was meaning to drop you a note as your post was most interesting. I'd love
to do things to my bike but having zero $ & no talent slows me down
somewhat. My recent stupid idea of painting it orange with 'montjuic' writ
on the tank was dashed cruelly by my spray painting friend who owed me a
favour getting posted OS for a year :(
If I ever get over this damn flu I would be definitely up for a ride up the
old road.
In the meantime, if you like going to the races, I'm going on sunday to
Eastern Creek to watch a mate race in the BEARS. I'll be the one with the
big hanky all rugged up & coughing, let me know if you're interested.

cath :)

>
>Cath,.. drop me a line asap if you are interested in the info another
>Sydney GS500 nutter has to offer. I have previously lobbed a big post to
>the gs list which you may have, if not I can post it on. Maybe a run up the
>old road is a possibility sometime.
>
>andrew horton
>systems management
>university of sydney
>ph(02) 9351 5065
>e-mail A Horton@records.usyd.edu.au
>
>
>
>

------------------------------

Date: Wed, 2 Jul 1997 16:45:00 +1000
From: A.Horton@records.usyd.edu.au (andrew horton)
Subject: Re: GSTwin Reply & excuses to hectoring :)

Hi Cath,.. send me an email to A.Horton@records.usyd.edu.au so I can give
you a contact number without telling the world..

andrew horton
systems management
university of sydney
ph(02) 9351 5065
e-mail A Horton@records.usyd.edu.au

------------------------------

Date: Wed, 2 Jul 1997 09:19:50 -0400
From: "Dan White" 
Subject: GSTwin More Power

I've got a GS500 that is completely stock, so far. Can anyone recommend the
best way to get some more horsepower without spending a lot of money?

- -- 
Dan White                     
Hibbitt, Karlsson, & Sorensen   "In the long run we're
white@hks.com                    all dead." J.M. Keynes
(401) 454-4040

------------------------------

Date: Wed, 02 Jul 1997 16:08:04 +0200
From: Xavier SERPAGGI 
Subject: GSTwin, problem and question

Hi,
I have a '89 gs500e, and made some slight modification on it.

Here is the big problem.
Because I had it painted, the fuel tank was empty for a while, and of
course, rust found the place very interesting.
I tried to clean it as well as possible, but obviously, I haven't
succeded 8-((
Everything went OK till the fuel poured from the carbs over the engine.
The carbs were full of rust, and after cleaning them, I mounted a fuel
filter.
But since then (and with or without the filter), the idle zone behaves
amazingly when the engine is hot : always beetween 3000 and 5000 rpm !!!
I tuned it down with the appropriate screw, but it still have no will to
drop under 3000rpm. And when the engine is cold, I have to turn the
throttle a bit or it stops.
My valve clearance is "quite" good, so is the synchro of the carbs.
I know the problem is from the carbs just because I swapped them with
others from another GSE, and everything was fine !
So, every suggestion is welcome.

Now the question.
I've been riding my gse for 22000km, and spent 4 pairs of tires.
So, a mean ride of about 5000km each pair. I think it's not very much.
At the begining, I thought it was the suspension, but even after
replacing it (EMC quadrant rear shock, and new fork springs) they do not
last more (only the bike behaves better ;-).
And, of course, the middle of the rear tires were more used than the
sides.
The front tires were more used on their sides than in the middle .
All were non-radial tires.
Am I the problem ?
Are the tires the problem ?
How many kilometers do your tires last ?

Thank you.

- -- 
Xavier SERPAGGI	 8-)              (http://www.emse.fr/~xserpagg)
- ------------------  Rid of the pest,
DEA Image         | I now can rest,
St Etienne        | Thanks to my best friend, who saved the day.

------------------------------

Date: Wed, 2 Jul 1997 09:56:38 -0800
From: "Michael Moore" 
Subject: GSTwin Many more pictures

I just got my photos from Laguna Seca developed and from that roll of
film I've added:

8 detail photos of the Honda 250/6
2 detail photos of the MV 500/3
1 detail photo of the Benelli 350/4
2 detail photos of John Cronshaw's BSA Gold Star
1 photo of a Scott two-stroke race bike
1 photo of a Moto Parilla Gran Sport (with a Manx in the background)

The above are all on the graphics page, under either the Vintage
Japanese or Vintage Roadracer sections.

I've also added some more 125/150 Laverda thumpette pictures, both the
to the 150 Laverda page and duplicated in the Vintage Dirtbike section
of the graphics page.

On the "weighing the Laverda 750 racer" page I've added some photos of
the lightened fork caps, rear brake panel assy, and the frame assembly
including the swing arm, triple clamps and rear dampers.

Cheers,
Michael
Michael Moore
Euro Spares, SF CA
Distributor of Lucas RITA and Powerbase products
Sole North American source of "The Racing Motorcycle: a technical guide for constructors"
http://www.eurospares.com
AFM/AHRMA #364

------------------------------

Date: Thu, 3 Jul 1997 19:03:09 -0800
From: "Michael Moore" 
Subject: GSTwin Still more photos

The latest additions to the graphics page are:

about 10 different shots (mostly detail) of my friend Peter's Honda
CR77 road racer,

several photos of the mockup of my friend Larry's Husqvarna 
125/Ducati 450 dirt bike,

two pictures of Harold Park's 1966 250 Ducati road racer (which I
raced last weekend), 

and a couple of pictures on the Laverda weights page showing the stock
8mm steel valves and the new 7mm titanium valves (with bigger valve
heads).

Cheers,
Michael
Michael Moore
Euro Spares, SF CA
Distributor of Lucas RITA and Powerbase products
Sole North American source of "The Racing Motorcycle: a technical guide for constructors"
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AFM/AHRMA #364

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End of GSTwin-digest V1 #40
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