Will stock 9C 2807 like being powered by 72V 40A controller?

[nomad85]

Yeah but.. there is a point where you need higher amps to cruise..

Like at 36a, i could only go about 37mph on the flats. 72v ( 83V charged ) should have gone about 46mph. I probably needed about 50-60 amps or more to cruise at the speed that 72v can go.

36a x 82v = 2952w constant on the flats.

Hmm, must vary between setups, I ran 74v nominal and could cruise at WOT in the lower 40 mph range without maxing out my amp limit (30A), Im sure terrain has a large role in this, its pretty flat here, on hills I could maintain high 30's but the amps where maxed out.

 

[nomad85]

Well I'm not sure about top speed, my bike is not that good, so for now I'm more interested in acceleration.

I wouldnt cut the shunt then.

 

[bobale]

I'll see when HuaTong arrives what I'll exactly do.

I've just programmed stock controller to 30A battery and 75A phase current... and it was disappointing, nowhere near the power when I modded shunt, so this stock controller is definitely out of question.