Using Trac Dynamics offset sprocket for fzr1000 wheel swap??

[capitanoinsano]

I saw a post regarding using the Trac dynamics offset sprocket for the yzf600r wheel swap.  Rather than machining the wheel to move the rear sprocket inwards, the idea it to move the front sprocket outwards (correct).  The fzr1000 rear wheel swap requires moving the rear sprocket in by 7mm (correct?).  The  1/4 inch (6.35mm) offset sprocket would provide 6.35mm of offset on the front sprocket.  So, could this front sprocket allow me to do the FZR1000 rear wheel swap with no machining?  Or maybe just need to machine the brake holder?

One rub (pun) may be the chain on the swingarm though.  The chain won't be centered on the rubber swingarm protector but maybe its wide enough.

[andyb]

You can always replace the little rubber guard with a piece of Delrin or the like if that's going to work better for you.

My opinion was that I didn't want to have to fight with machining sprockets or getting custom stuff every time I needed replacements.  So spacing things out and using stock stuff worked best for me.  If you can carry a spare, it's a non-issue, but boy it'd be no fun to lack the spare and need it when 100miles from home.

[capitanoinsano]

If I run a 170 tire on the FZR1000 wheel, I thought I didn't need machining on the front sprocket.  If that is not correct, someone please correct me. 
But back to the offset sprocket idea.  If the front sprocket from Trac provides 6.35 mm of correction to the front, and the wheel/sprocket carrier machining approach (usual way) shifts the rear sprocket to the inside by 7mm, then it sounds like the Trac sprocket is close to the necessary correction.  Maybe a slight machining (.5mm) of the spacer, but no wheel/cush/carrier machining needed?  And maybe the caliper bracket?

[threejagsteve]

Though I haven't actually done it yet, I've been collecting the bits and info to do this one myself. From what I've been able to gather, I believe you'd still need to have a bit of work done on the inside of the sprocket cover to clear the chain.

[capitanoinsano]

That may be easier than machining the wheel.  I'll have to look to see if it is just the opening for chain that would need machining.  Offsetting the whole cover may have complications due to the clutch slave cylinder (I think it's attached to the cover, have to look).  Someone on the list (andyb?) may have done this already? 

The caliper holding bracket would still need machined.  I am a little unclear on the specs (2mm off one surface, 5 off another I think).  I have both a fzr1000 caliper holder and 2 fj1200 caliper holders (one on bike).

Only other issue is chain may not quite rub the right part of the swingarm protector.  But that may work out ok as it may straddle one edge.  May need filing down a little.