Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

General Discussion about large electric scooters and motorcycles and other things with no pedals.
pasc2003   1 mW

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Location: Drummondville , Qc, Canada

Re: Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

Post by pasc2003 » Jan 10 2018 1:37pm

smeagol222 c.a speedometer work connected on kelly keb ?
Hello From, Quebec, Canada.

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smeagol222   100 W

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Re: Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

Post by smeagol222 » Jan 10 2018 3:07pm

Kind of. I need to calibrate the poles properly for the wheel and hall a wire and wheel size

I've been taking with grin about it
First project small E-scooter upgrade 1.5kw/3kw 48v 45a https://endless-sphere.com/forums/viewt ... 12&t=86228
Current project medium E-scooter upgrade 4kw/7kw 72v 90a https://endless-sphere.com/forums/viewt ... 10&t=85164

pasc2003   1 mW

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Location: Drummondville , Qc, Canada

Re: Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

Post by pasc2003 » Jan 10 2018 3:09pm

ok
tank-you
Hello From, Quebec, Canada.

Scottydog   100 W

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Re: Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

Post by Scottydog » Jan 23 2018 10:59am

Are you planning to have your CA have control over the KEB? I recently tried to do this with mine, but none of the wiring diagrams I saw seems to complete the wiring to make this happen. I gave up on it for now till I have time to relook at greater detail.

pasc2003   1 mW

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Location: Drummondville , Qc, Canada

Re: Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

Post by pasc2003 » Jan 23 2018 11:22am

CA3-KEB.png
CA3-KEB.png (183.52 KiB) Viewed 653 times
Hello From, Quebec, Canada.

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smeagol222   100 W

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Re: Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

Post by smeagol222 » May 14 2018 6:53am

So this weekend I got my LJ MJ1 modular battery fixed up

It's the 20s10p so has potential for 100amp continuous

Recently I've been having issues with the CA and programming the kelly controller. The guy who sold me the kit from QS motors was keeps insisting that my controller doesn't require programming. It's a 6kw controller and the wheel can handle 7kw peak. A fully charged battery would be 84v at 100amp would be 8.4kw output. Recently I have been putting it on 40% battery current (max is 70%) because the The 72v lifepo4 bms keeps cutting out.

Also I think the CA I have is telling me wrong numbers

For starters I have a 100amp circuit breaker which trips at 135amps. Thus far it has never tripped. So yesterday I put the controller at max settings 100% motor current, 70% battery current. Used the 72v 35ah lg cells modular battery for some tests

My God this is what I was originally expecting. It's like a completly different bike. The torque is muuuuch better and the top speed all I was game to test in flip flops shorts and t shirt was gps speed 75km/hr I'm sure it would reach the QS specs of 85km/hr

So I kept doing full throttle bursts then slow right down for a while then afterwards tested the motor with the back of my fingers. Not even warm. The battery wasn't warm or hot either

So that solved it for me
First project small E-scooter upgrade 1.5kw/3kw 48v 45a https://endless-sphere.com/forums/viewt ... 12&t=86228
Current project medium E-scooter upgrade 4kw/7kw 72v 90a https://endless-sphere.com/forums/viewt ... 10&t=85164

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flippy   10 kW

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Re: Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

Post by flippy » May 29 2018 10:08am

the breaker will trigger much later. it wont go at exactly that current. you need to sustain more then that current for a few seconds, the higher the current the faster it will pop.

personal feelings? just make a direct battery-controller connection and bypass the bms for the controller current but keep it for the rest. that way the bike will still cut out as you lose the control voltages for the controller and it will instantly die if the bms triggers a low voltage or something but it wont trigger on current anymore. that is regulated by the controller anyways.
Lithium beats liquid dinosaurs.

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