Heres the problem:
When the track is hot, cold, or marginal, the tire spins at the top of first, preventing the 1-2 shift. (does shift after a few presses) Tire is good, and running a MRE lockup with 160 lbs of static and small aluminum weights on each of the 4 arms. Doesn't have this problem when the track is nice (spectator events with good rubber down)
The bike has a 7" Goodyear slick and a bar. The window of launching is very small (maybe 500rpm between dying on the line or blowing the tire off)
Gearing is 14 x 52 and shift light comes on right before finish
Someone recommended changing the clutch pack order in the middle, (two steels then two fibers)
I was thinking the weight on the arms can be causing it, and its been said that no weight is needed at all...
Is it a little late in the pass for the static to be a factor?
You can run 2 steels together. You can NOT run 2 fibers together.
Eliminating a fiber will give you less total surface area and might help.
Also, try taking weight off 2 arms.
160 #'s static is not too high. (Any shim washers on springs?)
The launch window size could be due to actual clutch engagemnet point vs 2 step switch adjustment.
You could also take 1 tooth off rear sprocket.
Once it spins, with a rear wheel speed clutch, the arms will come in.
R&D Motorsports can modify the shift drum/gear to help.
Your shift fork is not happy and the more it happens the worse it is going to get.
BIV, thanks for responding - I have no shims on the springs
My plan is now this:
Leave the clutch pack in the correct order
Reduce static by 10 lbs (it does spin on the hit sometimes)
Remove 2 weights from arms
What do most of you run for clutch pack assembly? (how many steels and fibers, and in what order)?
Its a Bandit 1200 bottom end with the 4 spring clutch conversion with the MRE lockup...
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