torque

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Tom Thomson
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Joined: Fri Aug 31, 2007 12:48 am

torque

Postby Tom Thomson » Mon Apr 28, 2008 2:01 am

Does anyone know the stall torque @72V-400A for a d&d #15A-6 6 1/2" series wound motor? Please don't suggest contacting the manufacturer.
tommyt

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ChrisB
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Postby ChrisB » Tue Apr 29, 2008 6:33 pm

TT would this site help you at all ??

http://www.elec-toolbox.com/Formulas/Motor/mtrform.htm

ChrisB
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Tom Thomson
Posts: 64
Joined: Fri Aug 31, 2007 12:48 am

torque

Postby Tom Thomson » Fri May 02, 2008 2:02 am

Chris
Many thanks - but this site appears to be geared toward AC motors.
tommyt

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ChrisB
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Postby ChrisB » Fri May 02, 2008 8:40 am

Dam sorry, only had a quicky look and thought it might have been of use :oops:

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hyve
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6.5" D&D stall torque

Postby hyve » Sat May 03, 2008 7:38 am

In theory this should be calculable, Tom.
Torque = hp x 33000, divided by 2Pi x rpm. Hp = watts divided by 746, and of course watts is volts x amps.

Working this sum out for 1rpm I get 5371 lb-ft torque, but you have to allow for a huge drop in motor efficiency at stall. It could well be only one quarter of that figure. People who know more about individual motors may be able to give you a guide there, I'm just quoting formulae to help get started.

Good luck.
Peter Ph


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