Tetrix DC Drive Motor W739083 dynamometer data

[Dave Otis]

Hi Richard, for the results with the Tetrix NiMH battery, with voltage >14V, is there any way you could provide the info on RPM vs. torque (I'm curious how the stall torque increases with voltage--does it scale proportionately?) and current vs. torque? Then we can re-run our simulation for the various gearing and wheel size ranges we're considering. We wanted to look at whole range of motor operation at ~14V, and not just the peak power point.

I realize you were unable to attach the raw data because of file size limitations, but if there is a way you could send us a more limited set of data that would be much appreciated. Thanks very much for your help!

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With Tetrix battery: (voltage > 14V)

Motor 1: 16.5 Watts peak output mechanical power at ~90 RPM, 178 RPM initial motor speed
Motor 2: 16.0 Watts peak output mechanical power at ~90 RPM, 173 RPM initial motor speed
Motor 3: 14.2 Watts peak output mechanical power at ~90 RPM, 172 RPM initial motor speed
Motor 4: 15.2 Watts peak output mechanical power at ~90 RPM, 176 RPM initial motor speed

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NOTE: I wanted to include the raw data and plots of speed and power vs. torque; however, they cannot be attached to this post because the file size is too large (>101.8 kB).

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Test Temperature: Ambient (22 degrees C)
Software: M-Test 5.0
Dynamometer: Magtrol HD 705-6N (Calibrated 01/12/2011 by NT) Dyno Controller: Magtrol 4629B (ML144)
Power Supply: Sorensen XG 150-11.2[/quote][/i]