So, the saga continues................
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I put the new ring on the front wheel and fitted the SM wheels over the weekend, it certainly looks very swish in it's polished stainless finish.
The good news: The speedo now reads cock on, indicated 60 mph with GPS showing 59.2 mph.
The bad news: I'm in an even worse position with the ABS & TC. As usual, after a few miles the TC, ABS and engine management lights come on.
The new issue is that in Map 1 (full TC & ABS plus soft throttle response) the TC is kicking in after roughly 1/4 throttle, it's like riding my Tomos
Running Map 2 (reduced TC, ABS on front only and more direct throttle response) it's nearly ok but if I'm really playing silly buggers I can feel the TC just kick in momentarily where it wouldn't normally have done so.
Soooooooo, it's back to basics and it looks like a rear ring is also required, with the requisite number of slots in it to fool the EMS into thinking the bike's still running 21/18 wheels.
Original fitment is 45/45 slots. The custom front is 39 slots and I reckon the custom rear will need to be 43 slots.
Here's what you need to do the calculate what's needed if you fancy having a go
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The only issue is the rear will be harder to make as the mounting holes are dished/countersunk to allow clearance between the mounting bolts and the brake caliper. The guy making the rings has come up with a way of doing this but it's gonna be a while before he can make one for me - patience is a virtue
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The other change I've made is to drop three teeth on the rear sprocket (45 to 42). This has lost most of the 'manicness' of the shorter gearing and is much nicer to ride on the road but I reckon I'd like a little of it back so am ordering a 43 tooth sprocket, reckon that'll be perfect for me
Andres