RC-Monster Forums - View Single Post - How to build a brushless motor test bench?

nativepaul · 01.22.2013, 07:33 PM

You use the various BL motors to spin a big brushed motor and measure the watts you input the BL with and what you get out of the Brushed getting absolute figures is still a PITA as you have to find the efficiency of the brushed motor as a dynamo to get them, but comparative efficiencies are easy, the one with an output closest to the input wins.

It is possible to do with a BL motor for the output too as I have seen a bench setup with a 3080 for the load somewhere on the web, but a brushed motor is very easy.

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nativepaul RC-Monster Aluminum Offline Posts: 522 Join Date: Jan 2007 Location: Sussex, England.	01.22.2013, 07:33 PM You use the various BL motors to spin a big brushed motor and measure the watts you input the BL with and what you get out of the Brushed getting absolute figures is still a PITA as you have to find the efficiency of the brushed motor as a dynamo to get them, but comparative efficiencies are easy, the one with an output closest to the input wins. It is possible to do with a BL motor for the output too as I have seen a bench setup with a 3080 for the load somewhere on the web, but a brushed motor is very easy. Hot Bodies Lightning 2 Pro carbon, Mega 22/30/2, MMM, 4s3-5Ah. Tamiya F201 carbon, Mamba 7700, MM, 2s A123 2.3ah. Xray XT8, 1518, MMM, 4s5Ah. Lots of boats. fastelectrics.net