I just suddenly realize…
Dexter made DDs…
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@torqueboards I hope we are talking about that real 6 inch ALL TERRAIN tire that really needs to be done please😜… can’t wait to see your DD out and about with some pneumatics… Now we need pics of your DD and pneumatics please just some more porn for us to drool over at least …
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@Frency yeah, that’s the plan 
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Hey guys, article coming soon to accompany the video, but here’s my video review on the beta direct drives. Any questions, feel free to ask!
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Wait did i hear right… your test models are based on 6355 but productions are gonna be based on 6374? Sweeeet
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Yes you heard correct, he’s sending me the production 75’s soon to compare as well. Top speed on TB 4.12’s on 12s with 30 amps per motor (bldc) was 35mph, top on unity at 60A per motor (foc) about 38mph. Considering the beta stators are 55’s I’d imagine you ought to see 3-5mph more top speed on production models, plus more overall torque.
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Changing Motor current shouldn’t change the top speed as long as they are the same kv.
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Typically a larger stator means a higher wattage which is why my top speed on dual 6355 belts is much lower than the same 190kv on a dual 6374.
If you’ve seen my race with Robin from lazy rollers at about 10 minutes in: https://youtu.be/b_uqtqzmRPQ
you’ll note that our builds are nearly identical, he’s on 12s5p with dual focboxes on 55’s while I’m on 12s4p dual TB 4.12’s on 6374’s, both 190kv motors. He gets smoked by me at the end and can’t catch up. All the love Robin! 
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Nothing like a nice 12s4p on 192kv 74’s for smoking opposition. Unless its a bloody unicycle. Those things book.
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IDK what kind of setup you guys have but numbers stands. Same kv same gear ratio same top speed. Except slight variation from heat. But if you do get higher top speed I wonder why. Let us know how it goes.
Not true. Resistance of wire and current draw at max speed will affect the top speed even if you have the same kv and gearing ratio. Let me know if you want to go into the math.
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Lower resistance wires would provide more speed too? Less voltage drop across them so more to the motor?
Slightly more, but very small amount.
Yeah, winding resistances are already very low.
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People say in use ideally you want the motor to run at about 85% of the no load speed with a load. If ur running under that with a load maybe want to decrease the load somehow for better efficiency or get a bigger motor. if you’re doing higher than 80% with a load you’re doing well with the motor size to load ratio.
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precisely!
You also have to consider the battery internal resistance to calculate the net voltage “available” to the motors . A heavier person/higher wind resistance/going up a slope, all require higher current at a given speed and hence you have noticeably less net voltage to the motor hence less top speed. Also because of the current as the heat builds up, the winding resistance increases significantly, thereby also affecting the top speed.
You can test it out by carrying a 20Kg backpack / going up a hill / putting a cardboard on you chest to increase wind resistance.
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Also depends on things like whether you have efficient polyurethane longboard wheels or squishy pneumatic wheels.
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yep!
So to say that only “KV and gearing” ratio dictates the top speed is totally wrong. <-not meant for you @b264 
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