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Old Dec 27, 2003, 01:33 PM
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Budapest
Joined Jul 2003
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The thrust measurement is rather easy with an electronic scale. There is a small trap: if the propeller wind hits the scale, as high as 25% error is possible.

There is a picture of a simple torque measuring device (made by Takao Shimizu) in the Power systems/ One hour CDRom... topic, it should be interesting if you are about to measure efficiency too.
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