DC Motors (fwd)

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Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Tue, 22 May 2007 19:16:35 -0700
From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
To: Tesla <Tesla@xxxxxxxxxx>
Subject: DC Motors

Hi All,
I've got a bunch of DC Gear Reduction Motors on hand.
http://www.classictesla.com/temp/gm_2.JPG

A couple small crates worth (guessing about 100 motors on hand) that I 
was once selling on eBay, but lost interest. I would like now to clear 
out some space in my garage, but I can't see throwing these motors out. 
They are perfect for winding machines.

So, I'm now offering them for free. If you would like a few (not too 
many as I'd like to make sure everyone that want's one gets one), just 
email me "off the TCML" to my personal email (bartb@xxxxxxxxxxxxxxxx). 
You will need to pay for shipping, but that's all. Contact me off the 
list about payment methods for shipping. USPS flat rate is the cheapest 
and about $8 to anywhere in the US.

The motors "are" used, but I will hook up each one to ensure it works 
and "sounds" normal. These motors were custom made or a low profile 
application requiring high torque. Their direct from Germany. The motor 
includes an internal clutch which limits the current to about 3.2 amps. 
Thus, you can stall these motors for a brief period without damaging or 
demagnetizing the motor. Of course, the longer they are in a stall 
condition, the more ware that is put onto the clutch. The gear reduction 
is 512:1 and I have a few that are 400:1 (I think). They are designed 
for 24 VDC. The shaft will spin 1 revolution every 8 seconds at that 
voltage. So, really low speed (which is why they are great for winding 
machines). However, they are high torque and that is something to be 
aware of. The motors new are $400 ea., but were purchased in higher 
quantities where the cost was reduced to $100 ea. I'm letting them go 
for free except shipping.

If you want one, two, three, etc.., just send me an email.

Take care,
Bart