[CRUSH-build] driving the collector drum with a belt

[Green, Wesley A]

As I recall you wanted a 2x gear increase to speed up the roller and decrease the diameter.  To get the gearing right you'll have to get a bigger gear on the motor than what comes stock.  Consider the stock gear motor the smallest diameter you could use on either shaft and to get 2x you need a bigger gear on the motor.  Just want to make sure that was understood.

For shooters we opted for direct drive to eliminate components and complexity - gearing occurred at the wheel diameter only.  I suggest we keep this path.  As an industry rule, after the design is decided we only change if it's necessary.  Making it a little better just wastes time.  Remember - better is the enemy of good enough!

I saw the pictures coming out - things look good!  Hope to see some more on the chassis and other design areas.

Cheers,
Wes

-----Original Message-----
From: crush-build-bounces at wizardofaz.whsites.net
[mailto:crush-build-bounces at wizardofaz.whsites.net]On Behalf Of Bill
Bennett
Sent: Wednesday, January 18, 2006 1:22 PM
To: build crush
Subject: [CRUSH-build] driving the collector drum with a belt


I think we will drive the collector drum with a belt rather than chain. 
Quieter and more efficient, probably lighter. The CIM motor comes with a 
toothed pulley for driving a rubber belt. If it hasn't been lost we'll put 
it back on. The belt and matching pulley can be bought from 
motion-industries. Maybe you shooter guys want to consider this option too.
Bill 


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