I know this is an old thread but I can't help myself from not replying and I can't look at this without cringing. Panther6834 I can see where you are coming from but its not possible. As said above, kv increases as timing goes up. I'm going to focus on roar approved 540 motors since these are the ones typically used in racing. For castle and hw basher motors, it really doesn't matter much and they are listed in kv since there is no adjustable endbell.

All roar approved 540 motors follow the rules here https://www.roarracing.com/downloads...otor_Rules.pdf

All of them are Wye wound. rotor dimensions and stator dimensions are controlled. They are categorized by wind/turns. The kv varies, and torque curves vary. Even if two motors have the same kv at the same degree of timing, the torque will be different, the amp draw could be different.

The companies that typically give spec sheets with their motors (fantom, trinity, r1) are just trying to find ways to sell their motors for more money and get as close to the roar maximum ($150) as possible. If you look at trinity's website, you'll see that their $175 motors no longer have roar approved next to them and so you can't even use them at a roar controlled race. This is also why R1 doesn't sell motors with aligned sensor boards, binned stators, and binned rotors all at the same time (they sell these separately at 149.99). This binning is just so they can sell expensive motors at extremely high margins and also give the very best ones to team drivers.

Also, first of all, adding labels on the box would cost almost nothing (but they wouldn't mean anything) as in the cost would be for someone to go into the design files and edit it. BUT if it did cost a few dollars a motor, that's a tremendous amount when you are talking about tens of thousands of motors (depends on brand).

I don't know I kinda got off track here but there's so much wrong information this thread...