Motor efficiency and dynamometer
 

Hello,

I race a bit (I have a B44 and a RC18B), and I also like more technical stuff (I just finished my M.Sc. in mechanical engineering).

I was wondering is someone has worked with dynamometers before to measure motor efficiency, torque, etc... I have done some research, and there is not a lot of options available. Most threads are pretty old. The motor info would be pretty useful to select and optimize the motor and gear ratio for a specific race or frame.

I developed a dynamometer for brushless motors, and it was released recently (I won't post about the name here, so no self promotion). Most of our clients were businesses building quad, or research universities. I was wondering if the racing community would be interested by the tool too.

Thanks!

This is very interesting to me! I have been acquiring parts to make my own dyno, but would love to see what you have created. I just sent you a private message.

Yes, i´m interested!

Once I get some info on this dyno, I'll start a new thread for it in the Radio and Electronics section, which is where this really belongs. Dynos are interesting to onroad, offroad, and airplane/chopper guys!

I'm guessing its this one.

http://store.rcbenchmark.com/

and here

http://www.redrc.net/2015/11/rcbench...-motor-tester/

Didn't see any thread, so I went ahead and made one:

http://www.rctech.net/forum/radio-el...or-tester.html

;)

My apologies for the delay in responding.

It is great that people are interested! My colleague and I believe in offering more than just a dynamometer. We want to ensure that we can offer designers exactly what they need to get the best out of their motors. We are currently working on a series of motor- testing tutorials and your feedback and questions will be very helpful.

One of the projects we currently have under development is a free, open-source, user-generated motor database. Wouldn't it be great if you could access independent data for almost any motor on the market? Each motor in the database will include power and efficiency information for a large range of possible speeds and torques. With the database, it will be possible to objectively compare one motor to another. Hopefully, the database will encourage manufacturers to publish their motor specifications and ensure they are accurate.

I will be available to answer questions related to our dynamometer, or motor testing in general, in the thread created pphaneuf.