Seat removal sfc 1000

I took a 530 sprocket and got it grinded down on the inner side by OCT. This makes it kind of off-set and provides some (necessary) mm freeplay for the GSX-R-Rims. The chainwheel carrier of the rear rim is also trimmed down a bit to get the chainwheel closer to the rim. Works well with a 150/70-18, but is really a case of mm... But as the tire slims a bit by the gravity when rotating at speed, the TÜV accepted the solution...
 
Lothar, if you trimmed the sprocket carrier to make the chainwheel closer to the rim aren't you doing the exact opposite of what you wanted to do? Surely you want the chain and sprocket further AWAY from the rim? When I went with a 4mm offset gearbox sprocket I added 4mm spacing washers between the rear sprocket and the sprocket carrier.
 
You've got it arse-around, Quentin. ;)

The inside of the front sprocket was slimmed to get the inside of the chain away from the tyre. The GSXR carrier requires serious machining to get the chain in line, the Suzuki chain run is about 10mm further outboard.

Not sure if just adding spacers would suffice in the long run, there's a lot of clamping force missing due to the sacrificed mating surface between sprocket and carrier. Regular checks would be required.

piet
 
Sorry. Didn't realise the Suzuki rims were a new addition at the same time as the offset sprocket. Had to do the exact same thing on the Triumph hub I used. Piet, the 4mm spacers were on the Kwaka Z1000 hub and pretty much covered the std sprocket clamping area - zero probs. Triumph hub is similar and I'd add spacers to that too if nec. Could make a plate identical clamp pattern but not required and a lot more work.
 
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