Dual Motor eBike - Throttle option Bosch, Yamaha can?

[Andy88]

Picture of dual hub set up back and front wheel.

So my question is on a mid-drive BOSCH, Yamaha or Shimano Steps, could a hub motor be fitted to the front wheel with a throttle, if so how would battery and controller work?

 

[LeighPing]

What would be the point? You would go the same speed and drain the battery twice as fast.

Powerful for hills I'm guessing.

 

[Andy88]

Yes, it would need to be separate batteries with integrated controllers. Somebody in my local group asked me.

 

[Andy88]

What would be the point? You would go the same speed and drain the battery twice as fast.

Powerful for hills I'm guessing.

Another point if there were 2 x 250w on one bike would it be viewed as a 500w from a legal standpoint?

 

[LeighPing]

Another point if there were 2 x 250w on one bike would it be viewed as a 500w from a legal standpoint?

No. It would be 2 x legal motors. But you wouldn't go twice as fast.

 

[Andy88]

No. It would be 2 x legal motors. But you wouldn't go twice as fast.

Right, Leigh but its a novel concept to get throttle access when needed if buying a branded mid-drive albeit kissing goodbye to any warranty.

 

[Gubbins]

The only reason I can think of would be a throttle controlled hub to give you a free ride.

 

[Andy88]

The only reason I can think of would be a throttle controlled hub to give you a free ride.

Yes, exactly

 

[LeighPing]

The only reason I can think of would be a throttle controlled hub to give you a free ride.

Free-rides are great.

Here's my lad free riding, cross country, after the first 5 seconds.

 

[Andy88]

Free-rides are great.

Here's my lad free riding, cross country, after the first 5 seconds.

Exactly, I don't mind pedaling but I want the option to free ride when I want to. Your dog really going for it, lovely.

 

[Gubbins]

Again it's each to his own .. but I like the idea of going out knowing I will have to pedal it back no matter what. If I had a free ride button I would be tempted to use it.....

 

[LeighPing]

Again it's each to his own .. but I like the idea of going out knowing I will have to pedal it back no matter what. If I had a free ride button I would be tempted to use it.....

You can't beat being spoilt for choice.

Throttles are great for 'setting off' assistance.

 

[Deleted member 4366]

Here's a CD bike I built with an additional Q128 hub-motor in the front wheel. The controller is under the frame in front of the crank-motor. The Bosch battery probably doesn't give enough power to run two motors, so you'd need an additional battery mounted somewhere.



This bike has three motors running off two batteries and three controllers. It was like being shot from a gun when you opened up the throttle up a 15% hill (5.5kW):

 

[Andy88]

You Nailed it Dave