<VV> Toothed Belt/Pulley

[deltainc]

----- Original Message ----- 
From: <RoboMan91324 at aol.com>
Subject: <VV> Toothed Belt/Pulley


> Scotty,
>
> It is likely that, with a stock fan, the toothed belt would lose its teeth
> very quickly.  The high inertia of the fan would want to maintain its 
> speed
> during quick changes in engine speed.  The Corvair belt/pulley system was
> designed to slip under these changing speed conditions to reduce stress on 
> the
> belt and keep it from flying off.  That is why our belts must be loose.
>
> Doc
**********
A toothed belt ( consider the HTD series  ) would be more efficient than a v 
belt.

Agree that it needs a clutch in the sytem; this could be either a face 
clutch or a centrifugal type, both can be sized to slip at a predetermined 
torque....

Also, I would not be so sure that the vertical fan/belt system , at some 
frequency/rpm, would not benefit from a belt keeper ...

So nice to occasionally see an improvement to the 'vairs come along.

regards, ken campbell, deltawerkes