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DPRG: BOUNCE dprglist@dprg.org: Non-member submission from [Brad
Garton <bgart@airmail.net>]
Subject: DPRG: BOUNCE dprglist@dprg.org: Non-member submission from [Brad
Garton <bgart@airmail.net>]
From: Jim Brown
jbrown at cyberramp.net
Date: Wed Sep 23 07:01:46 CDT 1998
>X-From_: owner-dprglist at dprg.org Mon Sep 21 20:29:43 1998
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>From: owner-dprglist at dprg.org
>Date: Mon, 21 Sep 1998 19:34:38 -0500
>To: owner-dprglist at dprg.org
>Subject: BOUNCE dprglist at dprg.org: Non-member submission from [Brad
Garton <bgart at airmail.net>]
>
>>From owner-majordomo at horta.ncc.com Mon Sep 21 19:34:37 1998
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>Message-ID: <01BDE59D.BB2915A0 at ppp03-32.ght.iadfw.net>
>From: Brad Garton <bgart at airmail.net>
>To: "'dprglist at dprg.org'" <dprglist at dprg.org>
>Subject: RE: DPRG: Stepper motor torque/speed tester
>Date: Mon, 21 Sep 1998 20:23:43 -0500
>MIME-Version: 1.0
>Content-Type: multipart/mixed; boundary="----
=_NextPart_000_01BDE59D.BB2915A0"
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>I'm having trouble visualizing this. Can you draw an ascii diagram?
>
>Brad
>-----Original Message-----
>From: Alan Bredon [SMTP:abredon at imagin.net]
>Sent: Monday, September 21, 1998 11:48 AM
>To: dprglist at dprg.org
>Subject: Re: DPRG: Stepper motor torque/speed tester
>
>Clay Timmons wrote:
>
>> I've started building such a test setup. I don't have anything
>> to vary the load on the stepper motor yet. Two ideas here.
>> First the simple one. Have a 2" diameter pulley, 1" radius for oz/in
>> measurements, and simply hang a weight on a string. Second
>> option would be to attach a DC motor (using it as a generator)
>> and vary the load on the motor. I prefer the simple solution
>> for now since it is easier to calibrate.
>
>How about a good quality "Fish Scale" or other force guage attached to a 2" D
>pulley connected to another 2" pulley by a V belt that can slip. Drive one
>pulley with the motor and use an idler connected to a lever to tighten the V
>belt. This way you can see all the torques from full speed to stall.
>
>Improvement: Add dots to the driven pulley and log speed. Read the guage
>(digital guage) and graph with the speed to show the complete torque
>performance.
>
>-- _ _
> / || \ Regards, Alan Bredon
> / || \ My views & opinions do not represent my employer.
> /. .||. .\ "PC means Personal Computer, Political Correctness
> /-|-||||-|-\ will not be tolerated."
> _|_|__|_|_ http://www.imagin.net/~abredon/robot.htm
> | . . . . | And always remember to ESCHEW OBFUSCATION!
> |__________|
>
> << File: ATT00000.htm >>
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- - - ____ - - - - - - ___ - - - - - - - - - - - - - - - - - - - - - - - - - -
\/\_\@ ____ / /\ __ ___ ___ http://www.dprg.org 08-15
/ / /\ / / /\ /--/ //\_\/\_/\ /\/\/\ /\_/\ jbrown at cyberramp.net
/__/ / / // / / / /__/ // / /__/ //_/_/ // // / (972)519-2868, (972)495-3821
\__\/ \/ \/\/\/ \__\/ \/ \__\/ \_\_\/ \/ \/ jgbrown at spdmail.spd.dsccc.com
http://www.cyberramp.net/~jbrown www.geocities.com/TimesSquare/Castle/6818
My trip to Japan: http://www.cyberramp.net/~jbrown/japan/japan1.html
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