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| Contact: inverted@blackdogrc.com | ||||
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Motor Testing Techniques
A HUGE thank you Jerry Lampi for his un-ending enthusiasm and drive to test new motors! None of this would be possible with out your ideas and exuberance! The idea behind providing motor thrust/mph/air time calculations is so that our customers can clearly get an idea of what kind of perfomance they can get from any particular motor. We strongly feel that providing information (good or bad) about the product is the only way to go. In general, the data is collected by mounting the motor into a fixture and collecting amp, prop RPM data using 2 or 3 cell lipo batteries. Through the use of a tachometer and "wattmeter" we collect the data using a variety of props. Safety first! Below is a picture of the BlackDogRC "test stand"... 
Using a this technique, we can safely gather propeller/amp info (that's a 14" prop on the motor in the stand! The stand makes sure we keep all our fingers!) The front door is hinged and closes while we test. Using simple formulas found on RCGroups, RC Universe and other public domain web sources, we calculate the thrust, mph, airtime. Note: We don't capture voltage, and instead use a "typical" value. For example, if the test ran using a 2 cell lipo, it goes into the motor wizard table as "7.4v". this way, we figured that NICAD folks could relate. However, this means the "WATTS" data is general, not exact. Disclaimer: We tried to control the environment and take accurate information. We tried to keep within the manufacturer's limits. But, we can make mistakes. So, use the data at your own risk. IF YOU NOTICE an error in the data, please contact us. It helps everyone to get it accurate! Also, if you need more information about the formulas we use, please ask. Thanks! |
