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Re: Re: Re: prony brake
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Posted by Gerald J. on December 05, 1999 at 07:37:08 from (208.142.211.151):
In Reply to: Re: Re: prony brake posted by Hey Big-belt or take-off? on December 04, 1999 at 19:52:04:
A prony brake has been made to work with a fractional watt thermal engine up to a steam locomotive. Its not particular. My dad has one made for 1/4 to 3/4 hp electric motors. It uses the motor shaft for the friction surface. The prony brake uses the shaft or a drum for the load. Measures the torque with a beam and a weight or scale (spring or platform). The larger prony brakes have to be water cooled. So a prony brake could be built to handle both 540 and 1000 RPM pto and belt. The electric dynamometer is more convenient to use, though probably most don't accept belt drive these days. The difference between a prony brake and the dynamometer is that the load on the dynamometer is electrical, not friction, but the torque is measured the same way. Gerald J.
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