Calling All Brainiacs!

[crazyjr]

Originally Posted by Procharged5.0

I think we should develope a brushless motor dyno. Something that can handle a minimum of 2250w (3+ HP). Something to test torque, efficiency, RPM/v (loaded & unloaded, etc), current draw. etc.).

Maybe it's possible to utilize existing software or even base it off of a Eagletree.

Load can be provided by eddy current power absorber or a water brake absorber.

Any interest or thoughts????? I have ideas and some sources for hardware & software but not the time to pull it all together.

Should aim higher on watts, My 7XL and 9XL on 5s will pull 1900 watts peak, and i know there are stronger motors out there. People like Promod, CHC, Aquwt and the Bomb-proof guys are eclipsing that easy right now. all you need is an eagletree and a calculator for real world figures, but it would be cool to see max loaded numbers. BTW how many watts is there to 1 HP? I have heard its somewhere between 740 to 750 but never have heard a definate number

[jhautz]

Originally Posted by crazyjr

Should aim higher on watts, My 7XL and 9XL on 5s will pull 1900 watts peak, and i know there are stronger motors out there. People like Promod, CHC, Aquwt and the Bomb-proof guys are eclipsing that easy right now. all you need is an eagletree and a calculator for real world figures, but it would be cool to see max loaded numbers. BTW how many watts is there to 1 HP? I have heard its somewhere between 740 to 750 but never have heard a definate number

I agree. Aim Higher. There are many out there surpassing those numbers now. Crazy, The eagletree will give you real world INPUT power nummbers, but not output numbers.

I saw a video somewhere around here of a nitro motor dyno, all you would need is an adapter to mount an electric motor in it and it should do the job. The dyno doesnt know what is generating the power, it just measures the power being generated. Putting an eagle tree on the input side would give you a comparision of input power to output power and allow you to measure overall system efficency. That would be really cool.

I would love to see something like this come together any way that it can happen. Its just that kind of tool that will tell how much better the high end motors are than the less expensive versions. I suspect it will be an EXPENSIVE project though.

[crazyjr]

Originally Posted by jhautz

I agree. Aim Higher. There are many out there surpassing those numbers now. Crazy, The eagletree will give you real world INPUT power nummbers, but not output numbers.

Yeah, I didn't think before posting, you're right i'm pulling 1900watts peak out of the batteries. It would be good to see real world efficiency numbers, not the ones that the manufacturer puts up