That’s them lots of fakes one I bought on Ali gives different capacity to the other 3, the printing looks different too.
N9, towards enfield. Not too far. I had a small job in golders green 2 months ago
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Specs: 12s4p 30q
Would you run dual 6374 190kv or dual 6355 170kv?
According to my calculations the difference is between 47mph and 42mph. Does this seem accurate? Is there anything else that is majorly different
I would go for 6374 170 if possible for max torque, you don’t need that much top speed
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Water and dust will go right in there, and it could fall off when you hit a bump.
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Can size affect torque?
Course. Bigger motor = more torque. Within reason.
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Torque per amp is almost directly related to copper volume afaik…
I know @hummieee probably knows a lot more than I do on the subject lol.
I’m just wondering if it’s like a major different in torque between 6374 and 6355
Like is one throw you off the board and is the other like gradual
He’s got a point to be fair. But there’s no permanent magnet in this world that can hold to the vibrations a skateboard gets.
I would rethink this as a deck sandwich.
Top slice: a sheet of reinforced carbon fiber in all directions, minimal flex (also perfect occasion to put some luminol paint or just led strips with diffusers in the resin)
Middle layer: all typical internals plus a rubber gasket all around to seal and hide the slice edges (or don’t? Nice raw look) also load distributing spacers. Loads of them.
Bottom layer: unidirectional carbon fiber sheet, fibers running between the hangers, maximum strength, can add thick vinyl covers for design and dent protection
Notes on the middle sandwich: can add active cooling, holes can be manually closed in rain or use waterproof mesh
Within reason, the entire deck surface can be used as space for components.
Good or nah?
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Kt being the inverse of kv reveals torque per amp as said so a small motor with low kv can and will put out more torque per amp…except for magnetic saturation of the stator so need a stator big enough to hold the magnetic field. And then to lesser extent a small motor will have less wire and greater electric resistance and ohms law can effect the current that’s useful.
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It’s not that dramatic but it’s noticeable. Keep in mind it is the length of the stator that matters, and there is a “header” in the motors. So if we just assume for giggles that there is a 20mm header in the motor, that means the 6355 has a 35mm stator and the 6374 has a 54mm stator. That’s over 50% bigger on stator even though the motor only grew by 19mm…
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science!
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Makes sense, Hmmm decisions decisions. Don’t know if I should sell the 6374 190s I got and go smaller
Why you wanna go smaller?
So my understanding is that if you’re winding for a given max current, lower kV will increase the copper volume, correct?
Thus making a very close connection between copper volume and torque per amp?
Or am I just possessed by a scathing case of the dum dums?
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U could wind a motor with a max current an esc could do. Almost everyone goes at it the other way and wind for a max speed
You can and likely will have about the same copper volume regardless of the kv. But with lower kv it’s more turns or wraps needed so thinner wire n therefore more electrical resistance. (Crazily…luckily…it ends up being the same heat produced per amp. So either a low kv n high kt and one amp giving u 1 ft/lb and 1 watt of waste heat … or high kv n low kt and ten amps giving u 1 ft/lb and 1 watt of waste heat)
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Awesome I’m in Golders Green
If you ever want to meet up…
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Really noob question but is there a specific order for phase wires and what way they have to go into the motor
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