[MKOB] RE: Compact gear motor

[jhayes75 at bellsouth.net]

Larry,

	Most motors without gear reduction rotate at 1775 Rpm. In order
to get close to 150rpm you will need an 11:1 ratio gear reducer. For
every 11 turns on the motor, the output shaft on reducer turns once.
This would be a lot easier than the sheaves. Motors with reduction can
be expensive.

Here is a couple of links that might help for using pulleys.

http://www.csgnetwork.com/pulleybeltcalc.html

http://www.byo.com/departments/1123.html



-----Original Message-----
From: HArtzog [mailto:jazzbrew at charter.net] 
Sent: Thursday, December 14, 2006 10:34 PM
To: Jason Hayes (new); Jane McDow; Calvin Moorman
Subject: Compact gear motor

Calvin and Jane,

       This looks like the way to go for motorizing the Crankenstein if
I
can find some mechanical types to tell me what type of gear size to get.
Calvin and Jason let me know what you think if.

				Larry

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From: Eric Menchen [mailto:eric.menchen at xilinx.com]
Sent: Wed 12/13/2006 1:30 PM
Subject: Re: How to Motorize a Malt Mill

Yes, this reply is late. I was out of the country for a while and have
slowly been catching up on TechTalk.  Since I just recently completed a
mill
motorization project, however, I thought I would share my approach.  To
eliminate the need for belts and pulleys (or sheaves), I bought a gear
motor.  If you're interested in pictures and details, check out
http://www.dobierhaus.com/bier/milling