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Offset front sprocket

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Frankie 2 sheds:
Hi Guy's. Still in the process of re-building a special. The K6 engine has now been completely re-built and have turned my attension to the frame. I'm using a 2004 GSXR 600 doner for the front and rear. Having now got the GSXR rear swing arm and wheel on I now need to line up the main drive. A 10mm offset front sprocket will get me there or there abouts. There is very little room to fit a new standard sprocket let alone a 10mm offset one. Before I layout £80+ for the offset has anyone else fitted an offset on a fully assembled engine block??? or are my worse fears coming to fruition in that I would have to strip the engine again......Frank

Trigger:
A off set of 10mm will only leave you about 7.5mm with a STD chain and 5mm with a Xring which is getting very tight for that area. The problem with any off set sprocket, is the more you off set the more the final drive bearings are under load and don't last very long.
I have seen this done on drag bikes but, they are rebuilding and up dating the engine constantly  ;)

Frankie 2 sheds:
I totally get that trigger and I understand the conseqences. But it's the actual fitting of the offset sprocket that concerns me. Will it fit without having to split the gearbox, that's my concern.....Frank

Trigger:
Not sure as i can't see a STD final drive shaft taking a off set sprocket of that size  ;)

Here is a picture of a STD set up on a K6, i will let you do the maths  :o


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K2-K6:
Have you considered a 520 sized chain?

It's 3.2mm narrower than 530 before you start to consider alignment,  it'll also reduce the loading on the output bearing that could give some respite to having the load path moved away from the bearings.

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