AWD setup , need some tips

[alexlimmy]

Hi guys,

I am just getting into ebikes this year, been through 3 different kits so far. Currently i am finishing off my cyclone 3000w mid drive system, I was thinking of using my Crystalyte 4065 on the front wheel and turn it into an AWD ebike.

Ive seen system setup but still unsure how its done in terms of wiring. I got a few questions if anyone can please point me in the right direction.

- can it be done with a 57v 20ah (Nominal) battery?
-is it possible to just make it work with one trottle? Would i need a different controller?
-Can i use 1 controller to control both motors?

Side note;

whats the best setup for a moped wheel on the bikes. I can fit a 26x2.5 wheel currently on my bike. So was thinking if i drop to a 19x1.6 moped rim and a 19x2.75 moped tire. how will that tie into the whole setup?

Thanks
Alex

 

[Drunkskunk]

Well, first the basics. Yes, you can wire 2 controllers to the same throttle. Yes, you must have a separate controller for each motor. Yes, 19" motorcycle wheels work well, and there is a long dedicated thread just to making them work. Yes, it can be done with a 57v 20ah, if that battery can handle the amp load of 2 motors at peak draw.

A 4065 as a front motor, powered like it ought to be, is a good way to crash. A 4065 only being fed enough power to be useful but not cause instant panic and flailing death is a waste of a good motor. it's a big, heavy, powerful motor. it's going to handle poorly compared to a lighter powered motor, and be able to put more power to the front wheel than you have traction to use. a spinning front wheel is 99.9% of the time an unrecoverable crash.

 

[spinningmagnets]

I don't remember why, but...the two controller / throttle cables need to use the same ground on the single throttle (do your homework, don't trust anything I say)

Rear motor can be a geared hub (at 1800W), but.,..also can be a 2600W DD hub if you want higher power (or regen braking).

Front hub? best option on an AWD is large geared hub at 1500-ish watts

 

[Alan B]

Hi guys,

I am just getting into ebikes this year, been through 3 different kits so far. Currently i am finishing off my cyclone 3000w mid drive system, I was thinking of using my Crystalyte 4065 on the front wheel and turn it into an AWD ebike.

Ive seen system setup but still unsure how its done in terms of wiring. I got a few questions if anyone can please point me in the right direction.

- can it be done with a 57v 20ah (Nominal) battery?
-is it possible to just make it work with one trottle? Would i need a different controller?
-Can i use 1 controller to control both motors?

Side note;

whats the best setup for a moped wheel on the bikes. I can fit a 26x2.5 wheel currently on my bike. So was thinking if i drop to a 19x1.6 moped rim and a 19x2.75 moped tire. how will that tie into the whole setup?

Thanks
Alex

Mixing a hubmotor with a mid drive on one throttle is not going to be easy to match the RPM and power from the two motors, if that is your plan.

 

[alexlimmy]

i do have a smaller 1000w motor for the front wheel, which was running off a 48v 13.5 ah with 22 amps continuous. Might be better to run that on the front hub instead.

If i do run two throttles at the same time, what would happen in terms of would the faster one just out power the 1000w ? as in as it spins to say 40km/h will it even make a difference if i used the 1000w front hub which gets up to say 30kmh? if that make sense. And would the extra weight just cancel out any extra power from the AWD?


Thanks

 

[Alan B]

You can only gain power and traction from both motors when in a speed range that both can attain. It is generally best if both motors have similar top speeds, though it is not specifically required. If they both have the same top speed you may be able to send the same throttle signal to both. If you use torque throttle controllers then they will autmatically match speed and the throttle sets the torque of each motor which inherently balances.

 

[docw009]

Not to kill this one, but there's additional discussion here in the thread entitled 2WD FAQ, both on high power and lower power. Interesting to see how the thoughts on 2WD have evolved.

https://endless-sphere.com/forums/viewtopic.php?f=2&t=33429

 

[Alan B]

Not to kill this one, but there's additional discussion here in the thread entitled 2WD FAQ, both on high power and lower power. Interesting to see how the thoughts on 2WD have evolved.

https://endless-sphere.com/forums/viewtopic.php?f=2&t=33429

That's a good thread on 2WD. It has been awhile since I reread it.