Fitting 4.5" GSX-R wheel to 1150

[GS1150Pilot]

Just picked up the wheel (18 x 4.5" '88 GSXR) along with axle, carrier and spacers.

Now I am hunting a complete Bandit 1200 front end.

[posplayr]

are you putting a 17" wheel on the front?

[GS1150Pilot]

I want a 3 spoke with 43 mm forks, modern brakes and the ability to run conventional handlebars, so yes.

[blowerbike]

Just picked up the wheel (18 x 4.5" '88 GSXR) along with axle, carrier and spacers.

Now I am hunting a complete Bandit 1200 front end.

good find on a rare wheel...i have one left myself

[GS1150Pilot]

The guy I got it from is a GSX-R maniac. He has another one, too, I believe.

[posplayr]

I want a 3 spoke with 43 mm forks, modern brakes and the ability to run conventional handlebars, so yes.

Well I think that is a good choice perhaps the best choice. The matching front end for that rear wheel are much harder to get than Bandit parts and not as modern at than.

[GS1150Pilot]

The guy I got the wheel from has complete front ends, but I don't want clip-ons.

[blowerbike]

you can add risers to the top clamp if you like.

[blowerbike]

also be aware that 1200 bandits have 1" bars.
wait!
i'm thinking.....

[GS1150Pilot]

Heh-heh-heh

[blowerbike]

ok bad info...my bandit had 1100G controls/M/C that used spacers to reduce to 7/8" bars.
carry on...lol

[kingofvenus]

If he wants the chain to split the difference between the wider Tire and the frame, then the chain has to move left of center which is why a.) the counter sprocket has to be offset and B.) the chain side spacer has to be shorter. I'm not sure why you would call that stock?


I did a scatter plot (of various reported installs) that I posted awhile back in one of JohnKat's threads that the 5.5" wheels need 5/8" offset and 4.5" wheels need 3/8" offsets for this very reason. The chain has to move left 1/4 the wheel width increase.

EDIT: OK depending upon what the existing wheel size is (3.0" or 3.5") the increase to 1.5/4=3/16" or 1/4" respectively which would probably be adjusted by shimming the counter sprocket and shaving the chain side spacer the same amount.

That is how my 750 that has an almost identical swingarm as his, ended up. Like with any mod, it will depend on the parts he is using. I used a 3/8 offset.

[posplayr]

That is how my 750 that has an almost identical swingarm as his, ended up. Like with any mod, it will depend on the parts he is using. I used a 3/8 offset.

Ok thanks for the clarification ; 3/8 " offset is not stock. On the other hand the move from what ever 1150 wheel he has to 4.5" is probably requiring less offset than most might expect. I would expect 3/8 to be too far outboard (to the left) causing chain to be too close to the frame.

[GS1150Pilot]

I'm currently running a 3.5 with a 150 on it.

[posplayr]

Is that a stock 3.5" with 630 chain? In other words came from the factory that way? Look at your chain clearance after the edge of the wheel moves over 1/2" (4.5" vs 3.5"). How much space to you have to work with?