Large ESC 500A search

Electric cars, trucks, ATVs, NEVs - things bigger than a motorcycle.
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Loop98   1 µW

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Large ESC 500A search

Post by Loop98 » Oct 11 2018 1:40pm

Hi all,

I am quite new to the large electric vehicle world, and am trying to connect the dots. With a friend we are trying to build a drag racer that accelerates as fast as possible. For this we would like to use a 45kW motor with around 460A (so volts are around 100V). This would really give us the acceleration.

Any suggestions on the controllers? Weight of course is a thing to consider.

Thanks in advance!

flat tire   10 kW

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Re: Large ESC 500A search

Post by flat tire » Oct 11 2018 3:00pm

ASI BAC 8000

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amberwolf   100 GW

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Re: Large ESC 500A search

Post by amberwolf » Oct 11 2018 3:54pm

ASI BAC stuff is not going to do 45kw, or 100v.



@OP: I'd suggest looking up the various high-power racing builds around the forum, like Arlo1's, and see which controllers they are using.


Also, have you designed your battery pack yet? All the power you need is going to have to come from it. I suspect you're going to end up going a lot higher than 100v to do what you're after, just to reduce the current required from the cells (and size of wiring, contactors, etc.), which reduces the voltage sag, and increases the total power you get out of the pack.

Punx0r   10 GW

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Re: Large ESC 500A search

Post by Punx0r » Oct 11 2018 5:19pm

45kW is Zero motorcycle power. I can't find what voltage the 2018 models use but historically they've always been low voltage/high current, I believe under 100V. You might find some joy in salvaging in parts from such a bike, like motor, battery or controller. I believe most of them use Sevcon controllers of one type or another.

TilmanBaumann   10 W

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Re: Large ESC 500A search

Post by TilmanBaumann » Oct 13 2018 10:27am

Have to agree, the voltage/current choice seems backwards. Would be good if you could also explain your reasoning so far.
Sounds to me like you designed yourself into a corner. And since you are new to this...

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spinningmagnets   100 GW

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Re: Large ESC 500A search

Post by spinningmagnets » Oct 13 2018 1:32pm

Zero is 28S, frequently listed as 102V.

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amberwolf   100 GW

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Re: Large ESC 500A search

Post by amberwolf » Oct 13 2018 10:03pm

Yes, it would be around 120V fully charged.

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Dauntless   100 GW

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Re: Large ESC 500A search

Post by Dauntless » Oct 13 2018 10:52pm

Maybe you could convince someone who builds along those lines to join the ebike market.

https://www.aveox.com/controllers/
Any sufficiently advanced technology is INDISTINGUISHABLE FROM MAGIC!
- Arthur C. Clarke

Punx0r   10 GW

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Re: Large ESC 500A search

Post by Punx0r » Oct 14 2018 5:09am

100V/500A isn't unreasonable from a design perspective. It has plenty going for it.

IIRC there is an electric drag racing class limited to something like 24VDC. Now those guys know high current!

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Re: Large ESC 500A search

Post by Quinc » Oct 30 2018 12:11pm

Check out the Zilla controllers.

Stay away from the kelly controllers. While they have there place. They are overrated and do not have that seat of the pants torque pull you are looking for.

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