After swapping my toasted clutch and belt for slightly less toasted ones, I've made a few observations. My '86 has the larger heavier gold coloured front pulley. The donor motor had the earlier small thin Aluminium fron pulley. I read in the tech section that you can take up to .125 off the steel one. Would it hurt to bore out the back of it, and lighten it up as well? The earlier pulley is quite thin, but has fins on the back of it. My first tought was that it was webbing for strength, But the shape of them makes me think they're designed to be more fan like. The outer edge of the back face is like 13mm thick, I should be able to bore a lot of this out in the lathe. If I take it off the outside, It will mean that the weight left behind will be traveling less distance as the pulley goes around.
I've wondered about the scooter maybe losing speed faster when asending an incline, but the earlier pulley is way lighter. I'd use the Aluminium pulley, but the steel one can stand having more taken off it.
What do you think?
Other question,
When doing the pulley mod, Is it possible to run a stock belt if you remove the absolute maximum amount of material for the pulley? Will this increase the geaaring too much, or would it exceed that maximum amount of "take up" that the rear clutch pulley can give?
Once again your thoughts please.
Bart.
Pulley mod questions.
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Pulley mod questions.
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Kenny_McCormic
- CBR1000RR
- Posts: 4957
- Joined: Sun Apr 16, 2006 11:51 am
- Location: Southern Michigan
The higher mass might give better take off I would just shave it if i were you. If you shave it all off there wont be ANY bottom end, like you will have to run 10mph while giving it full throttle to get moving
I am not a mechanic, nor do I play one on TV. Actually my advice is probably worth slightly less than what you pay to view it.