What thicknesses do chain ring spacer washers come in?
I say this because I put spacers under my chain ring and now
it shifts beautifully.
I had a Biopace 28-38-48 and a Deore XT. No trouble.
Switched to Rocket Rings 24-36-52. Yuk. Looked around
for help. Got TA 24-35-51 and an R443 from Sheldon
Brown.com. Sheldon agreed a spacer might help so I tried
them and they did.
My reasoning was the _slope_ changes as you change ring
sizes. So at the risk of losing the chain in that gap
created, moving the bigger ring over helps maintain the
slope the derailer likes to work with.
Now, what might that slope be? 45 degrees? Or
something else?
Anyway, now I can consider what size washer is best. So I
need to know the thicknesses available. So I asked the above
question. Twice.
I'm done now.
My physics project at NVCC: Google Groups, then
"dgoncz" and some of: ultracapacitor bicycle
fluorescent flywheel inverter