Damn shkreli is based af
Is this because they have less copper or because the wire is thinner?
his motors are smaller than what heath is using rn, so they do have less copper.
I thought he was saying that this is why lower kv motors have lower current ratings in general?
Thatās what i was thinking too. I dont know much about motors, but these particular motors are the only ones ive seen rated this way (lower kv = lower amperage). Idk if this is due to the way theyāre built or if this a fact across bldc motors in generalā¦
This would be a fact across BLDC motors in general. If you look at spec sheets for motors, you will notice the lower KV motors will be rated for less watts. There is like a sweet spot where you will get more torque and still be able to to pull over 100amps, and itās right around 135-155kv
In my opinion motors in that KV range wonāt have much difference in performance, but I would recommend going a bit higher KV, so closer to 150 and gearing for the speed you want.
But if you would like to experiment, I have exactly 1 set of 100kv motors lol
In fact I have both 100kv and 173kv stators for them 
feel free to swap between them and see the difference
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To explain why:
Lower kv motors require more windings (wraps of wires in the stator) to produce their higher torque/lower speed characteristics. If you have two motors of the same size, one being 100kv and the other 200kv, they have the same volume of copper inside of them. However, since the 100kv motor requires more windings, it has to use thinner wires to fit all those wraps in the available space.
The 200kv motor can use thicker wires since it requires fewer wraps around the stator, and those thicker wires can handle more current and produce less heat.
Thatās my understanding of it anyway. Iām not a real duck, I just play one on TV.
A larger format motor has a larger volume of copper, meaning that even a low kv option will have thick enough windings to handle lots of amps. A higher kv version will still have thicker wires though.
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now here is A man that knows things! Thanks Ben!
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my whole life has been a lie
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I was just trying to like Benās poast then you scooped in ninja like right as my thumb was clicking. Sneaky bastard, Ill let you keep it
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I take it all back. Youāre not a feeble-minded flapdoodle.
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Thank you!
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It makes sense. Iām running the 138kv BB motors at 110 amp without problem, except for overheating easily. Its my understanding a lot of that heat is due to them being absolutely full of epoxy. I was hoping a 125kv Reachers could do the sameā¦ As much as id love to play around worh them, I canāt risk failure and I need to stop wasting money on motors that wont do the job. My search continues. Thanks for all the info
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The only way you can push more amps through a lower kv motor and make less heat is to use a bigger motor. However,
I agree with Artem. Thereās a sweet spot where you have to balance the technically higher torque output of a low kv motor with the thicker windings of a high kv motors. In short, there are circumstances where you can get more torque from a higher kv motor by pushing more amps through and generating less heat/electrical losses.
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Yes I agree with you, higher KV higher gearing, but things like size and of drive train and erpm limit become a concern then
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Iām not even hitting 90k erpm here. I donāt think itāll be a problem for anything thatās 75/100. I do imagine this drivetrain will wear faster. In terms of size, Iām just using moon drives and flipsky 6384s, so not super large. This crazy setup Iām running is more of an experiment to see whatās possible more than anything.
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I am curious to see how it goes. But yeah you not super pushing things here, what you got like 190kv and 1:5?
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190kv and 6.42:1
he has some new all metal gears with a smaller wheel pinion in beta soonish
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Is this straight cut I assume? 
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