brushless motor tester??what do you think??

[mdunham]

saw this on the hobbypartz website and thought it could be a useful tool..so thought i would share..i am a newbie and i thought this could be a useful tool to have..let me know what you think.

http://www.hobbypartz.com/26p-motorchecker.html

[Basstronics]

Interesting but not really...

I would be curious to see what the more seasoned guys think. Personally I would think its useless. When you buy a motor you know the KV reasonably well. The free load current draw is meaningless.

The only real thought I have is if you are building a twin boat and want to match closely two motors. No two motors are ever the same, but I think they are rather close. Unlike a brushed motor I dont think there is much you can do (if anything) to tweak a brushless motor.

[Boaterguy]

I'm sure it could be useful for plane guys, if they were to modify the stand big enough to fit a prop on the motor, Boating, not really.

[m4a1usr]

saw this on the hobbypartz website and thought it could be a useful tool..so thought i would share..i am a newbie and i thought this could be a useful tool to have..let me know what you think.

http://www.hobbypartz.com/26p-motorchecker.html

It has its purpose should one be competent to actually know what information it can provide you with. And the significance of that information.

Myself, I find a kv checker has enough capability to be usefull. Using simple dyno math you can do the calculations to tell all the rest of the information to trouble shoot a motor. A kv checker used with a multi meter and a servo tester to drive a bench based esc with a lipo pack are all the basic tools you need to ensure how good a motor is.

Most quality built motors have the Io done at 10 volts for the spec sheets. So all you have to do is verify that at a known voltage your getting the right amount of RPM's. From there you can calculate the Rm. Having those tid bits you can even do torque calculations, even efficiency calculations if you have a temp logger.

I wouldnt say most guys need that motor checker but if your the troubleshooting type guy its a good tool to have and learn how to use it. It can certainly answer questions based on facts instead of asking for opinions.

John

[Steven Vaccaro]

At about 6 minutes into the video he says he is going to select the "turns" of his motor. I have a sneaky feeling that field is not the turns of his motor, but break in time?