27 Nov
2008
27 Nov
'08
2:20 p.m.
Tony Duell wrote:
Only one of the pulleys should be crowned. If they're both flat, or
both crowned, it will throw the belt. No, I don't know why.
Gordon
=20
Hi
When we ground the pulley down, we checked the rate as
we ground it down. What I'd like to know is how does one
pedict the effective diameter when the pulley is crowned,
as in the SA800?
My guess is that, since the blet runs on the maximum diameter part of the
pulley (the point of crowning being to keep the belt on), then taking the
maximum diamaeter should be OK for this.
Thinking about it, should the ratio of diamaters of the spindle flywheel
and the motor pulley be the same for all positions across the width of
the belt? In other words should the (larger diameter) flywheel have a
steeper crowing angle than the motor pulley?