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-   -   Motor specifications from dynos and etc (https://www.rctech.net/forum/radio-electronics/893700-motor-specifications-dynos-etc.html)

phatboislim 09-24-2015 01:14 PM

Motor specifications from dynos and etc
 
I'm curious, as i'm still kind of new to the numbers that are taken from a motor dyno or from a certified motor. What do those numbers signify? Like i'm guessing it's telling on its efficiency and/or power of each motor. But how do i decipher?

IE:

http://www.rctech.net/forum/attachme...32637756_n.jpg

evochick 09-24-2015 05:40 PM

my guess looking at those numbers its a 13.5 1s ??

first one is stator resistance of the 3 winds, lower the better
second is rotor strength, higher the better depending on application
third I believe is current draw, lower the number more efficient it is,
and RPM is well RPM,

I don't know if that helps you or not as you can only really compare how good it is compared to other same motors

phatboislim 09-25-2015 04:30 AM

thank you very much

Mudcat981 09-28-2015 04:03 PM


Originally Posted by phatboislim (Post 14196658)
I'm curious, as i'm still kind of new to the numbers that are taken from a motor dyno or from a certified motor. What do those numbers signify? Like i'm guessing it's telling on its efficiency and/or power of each motor. But how do i decipher?

IE:

http://www.rctech.net/forum/attachme...32637756_n.jpg

The specifications on the certified motor sticker are as follows:

Stator resistance values at 72 degrees F, these obviously are very temperature sensitive.
Rotor strength values at 72 degrees F.
Amp draw and RPM at 1 cell voltage (free rev).
Amp draw and RPM at 2 cell voltage (free rev).
Amp draws are set with the Gforce measuring machine.

wrongchannel 09-28-2015 09:23 PM

Remember that because standards and calibration differences between Dyno manufacturers, these measurements are not a true form of comparison. Every manufacturer has their own way of interpreting the numbers a Dyno can produce.

Personally I only use these test to compare motors is when I'm comparing other motors I have.

sk55 10-04-2015 04:22 PM

#
 
Do you really think Trinity is putting RPM and amp draw numbers on their motors with a Gforce machine? I would be willing go bet it is a Motolyser(exclusive distributor) and very accurate or a machine they built.


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