all wheel drive
- Thread starter mike_j
- Start date
Yes, many have and forum member Old Timer has one with front and rear hub motors.
The bike below is a Panasonic crank unit bike with a 24 volt Heinzmann front hub motor as well, and a small petrol generator on the rear rack. These can be used in any combination, either motor in isolation or both motors with generator running:
The bike below is a Panasonic crank unit bike with a 24 volt Heinzmann front hub motor as well, and a small petrol generator on the rear rack. These can be used in any combination, either motor in isolation or both motors with generator running:
Hello,
Yes you can do two wheel drive (Admitadly you have two wheel drive with a front wheel hub motor and your legs powering the rear wheel).
There are people over on endless sphere forums that have added two hub motors / 1 battery / 2 Controllers and a single throttle.
However as good as the extra traction is for generaly use its not needed. Plus the extra weight of motors and controllers is a pain.
You also need a high C rate battery to have any chance of powering both motors.
But yes very possible.
Advantages :-
You can have a geared motor for torque and a high speed motor for well, speed.
Two wheel drive, would be good for grip. Could have two independant throttles for each wheel or driven off the one.
Acceleration would be very good and possibly high speed.
Disadvantages :-
Weight increase
If you have two direct drive motors one drive would be constantly fitting the other if not the same wind.
decrease in range
Yes you can do two wheel drive (Admitadly you have two wheel drive with a front wheel hub motor and your legs powering the rear wheel).
There are people over on endless sphere forums that have added two hub motors / 1 battery / 2 Controllers and a single throttle.
However as good as the extra traction is for generaly use its not needed. Plus the extra weight of motors and controllers is a pain.
You also need a high C rate battery to have any chance of powering both motors.
But yes very possible.
Advantages :-
You can have a geared motor for torque and a high speed motor for well, speed.
Two wheel drive, would be good for grip. Could have two independant throttles for each wheel or driven off the one.
Acceleration would be very good and possibly high speed.
Disadvantages :-
Weight increase
If you have two direct drive motors one drive would be constantly fitting the other if not the same wind.
decrease in range
D
Deleted member 4366
Guest
I think many of us with hub-drives that don't give quite enough power to get up steep hills have thought about this. As Scotty says, you can do it with one battery, two controllers and one throttle, but it's complicated and needs a moderate amount of electrical/electronics knowledge. Most of the one's I've seen had two throttles (one on each side) and two batteries - basically two complete independent systems, which involves a lot of weight and wiring. It would be much easier and cheaper to get a single higher powered motor.
Ref. photo in post # 2.
Some years ago I spoke to a chap in the DOT about the idea of using a generator in a trailer to alternatively charge and swop 2 smaller batteries. Two batteries charged in the trailer he said would be acceptable but two motors would be illegal.
Later in the conversation he agreed the 2 batteries could be swapped electrically by a relay. But when I queried the possibility of using 2 independent capacitors with electronic switching instead of batteries he was sure that would not be allowed but couldn't say why.
Nice chap, tried to be informative and helpful.
Dave
Some years ago I spoke to a chap in the DOT about the idea of using a generator in a trailer to alternatively charge and swop 2 smaller batteries. Two batteries charged in the trailer he said would be acceptable but two motors would be illegal.
Later in the conversation he agreed the 2 batteries could be swapped electrically by a relay. But when I queried the possibility of using 2 independent capacitors with electronic switching instead of batteries he was sure that would not be allowed but couldn't say why.
Nice chap, tried to be informative and helpful.
Dave
Last edited:
In theory yes. But as you only have two wheels it can only be front drive, rear drive.
The method of how each wheel is driven depends on the system.
I toyed with the idea for a while when I bad two motors. But decided against it for the weight. I also thought the thrust / acceleration would be great as well as the extra grip. But thought if I really want to get more of that just to increase the controller.
I just found 20amp was nice in giving me lots of power while stil maintaining a reasonable range from a modest 10amp.
An even then I can still pedal if I need to shift quite quickly.
The only thing i can think of two wheel hub systems is where grip is needed in off road terrain. Like a motorcross bike could work well.
Rear hub with low wind and front hub with a higher wind to allow less spin due to the higher wind.
The method of how each wheel is driven depends on the system.
I toyed with the idea for a while when I bad two motors. But decided against it for the weight. I also thought the thrust / acceleration would be great as well as the extra grip. But thought if I really want to get more of that just to increase the controller.
I just found 20amp was nice in giving me lots of power while stil maintaining a reasonable range from a modest 10amp.
An even then I can still pedal if I need to shift quite quickly.
The only thing i can think of two wheel hub systems is where grip is needed in off road terrain. Like a motorcross bike could work well.
Rear hub with low wind and front hub with a higher wind to allow less spin due to the higher wind.
Related Articles
-
MTF Enterprises announces acquisition of EMU Electric Bikes- Started by: Pedelecs
-
Wisper 806T folding bike wins Which? ‘Best Buy’- Started by: Pedelecs
-
Sustrans calls for protected cycle lanes- Started by: Pedelecs
-
Amazon launch their first UK e-cargo micromobility hub- Started by: Pedelecs
