I’m gonna be using the new 58KV elofty drives on Bergs soon. Top speed is well into 30+mph. There’s only one big ass hill in my commute that kinda makes me wonder if they’ll make it up or not. I tried the first TB DD on Janux hubs over Damons and loved them.
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No, lowering the Kv means doing more turns, and to do more turns you need to use thinner wire, this means that if you reduce your Kv by half, the motor resistance increase 4 times, 2 times due to the phase wire having double the length and another 2 times due to the cross section being half so you can fit double the number of turns on the same slot
Now, another important factor it Kt, that is the torque constant and it’s inversely proportional to Kv
So for the same torque, our motor with half the Kv has double Kt, it’s needs half the current to produce the same torque, but since copper loses are I^2*R, you end up with the same loses for the same torque
I can do a example with numbers of you want
This post from Benjamin is a really good read http://vedder.se/2014/10/chosing-the-right-bldc-motor-and-battery-setup-for-an-electric-skateboard/
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Yes it is the eboosted 12s4p, No its a 42" vanguard.
And its a great enclosure but it was tough for me to align and fit properly.
Amazing board and great flex. The battery is something that i am getting use to because these DD’s with these wheels does not get me the distance i want to get
But the bigger eboosted enclosure is great.
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I’m actually surprised how much of the deck it appears to cover. Yeah I wish I had went for the 12s4p even if I started with a 10s battery. Thanks!
I tested my XL’s in the VESC tool and they came out right at 80 kv. I think they were advertised as 85kv, so I’m happy with that. I’m running them on 107’s, soon to be 120 foamies, and they definitely pull harder running 100 motor amps vs. 80 amps. Even though I don’t seem to get much past 50 motor amps according to the Ackmaniac app.
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No kidding, the XL’s are at 80kv? I always thought that os what the speed drives were. So if the Xl’s are at 80that explains why my board gets up to speed slowly but keeps delivering power at the top end.
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I believe the regular speed drives were supposed to be 110kv.