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SM conversion and chain clearance

Joined Sep 2010
36 Posts | 0+
SF, CA
I recently acquired a 99 FE501 thats has a set of supermoto wheels mounted. The chain runs so close to the tire that the chain guard had to be removed, and there is evidence the chain occasionally interferes with the tire. Is there some fix that is missing? Should I simply be looking for a different wheel/hub (not totally opposed, as this one is sans cush drive)? Help appreciated, as I would hate to snap a chain...
 
Unfortunetely a smaller tyre would be the sensible solution .... What size are u runnig ?? A 160 on mine rubbs a bit as well, but no real problem, however I am now running 150 instead.

I don't know of any other easy ways.

Anders, DK
 
Here are some photos
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It is currently a 160. I was thinking perhaps some large fender washers behind the sprocket? The chain alignment seems to be slightly favoring inside, and it looks like all I would need to do is clearance the chain guide block a bit. Has anyone else done something similar? Or should I really just invest in new rubber?
 
Hmmmm, using spacers on your spocket..... You gotta be damn sure on the line-up... Also think that you would stress the holding bolts .... I dont know, you guess is as good as mine, it would probably be ok .... i think ... perhaps ...... maybe .....

Many people live with the rubbing, and it does not look that bad at all on your bike, you stil have a decent gap ...

My self... went the safe way, but only when the tyre needed replacement anyway.. Up to you.

Anders, DK
 
You could also try loosening the spokes on the sprocket side 1/4 turn and tighten the spokes on the disc side 1/4 turn to move the rim/tire away from the chain a little more. This and/or a 150 rear tire should give you loads of room.
 
For wot my opine is worth, My manual sez a 150 tyre is correct, depending on profile the 160 would tend to make turning slower and push the front more. If a 150 does not give enough traction then some sliding lessons could be beneficial. :D
Putting washers between the sproket and hub is not a good engineering practice. The sprocket bolts will loosen off more quickly.
You could trim a couple of mm off the side of the tyre (very few people acctually use that bit of tyre) or just leave it alone and ride on. The greatest risk of derailment of chain is on the lower side of swingarm and there is a guide to guide the chain back onto rear sprocket.
Is the whole swingarm polished? That could look kool.
 
Yes the whole swingarm and the wheels :) it looks pretty trick.

Sounds like I am just going to leave it be and run a 150 when this tire is done, and not try to re-engineer the rear wheel, thanks :cheers:
 
hi, you are just fine!

no problem there as i can see, you have enough clearance.

i have raced a bike with the tire pushing the chain for half a centimeter in the beggining until the edge of the tire was removed from rubbing against the chain.

there is really no problem in your set up, maybe just a worn out chain......
 

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