Came up with this design for a mid drive and hub motor combo, where the motors are meant to be used separately, in order to maximise the strengths of both. The hub for silent high speed, the midrive for extreme torque/ wheelies
I’m gonna have two chains, one for the mid drive and one for the pedals. So I can attach a huge sprocket to the midrive and hopefully be able to wheelie easily at 1200w (hopefully be able to do power wheelie, because of the extreme torque, would like to hear your predictions) since the hub is used most of the time the slower top speed of the mid drive doesn’t matter at all.
When the hub motor is in use the middrive chain will rest on a sprocket that slips completely because it’s on bearings. When it’s time to use the midrive I’ll move the chain to the active sprocket that attaches firmly to the hub motor and you’ll be able to use it (look at the attached pic). If I don’t do that the hub will drive the mid drive all the time and it’ll be inefficient, and if I use a one way freewheel you’ll get the loud clicks. The pedals will have a regular small one way sprocket.
The parts that would be used for this must be very rare since this is an uncommon build, but would kill for some part suggestions.
It’s way easier to understand using the attached pic but I’ll summarise:
1. Big sprocket that attaches solidly to the hub motor
2. Big sprocket where the chain can rest when the mid drive is inactive (that’s slips because it’s on bearings or any low friction solution)
3. A regular one speed freewheel for the pedal chain.
Thank you
I’m gonna have two chains, one for the mid drive and one for the pedals. So I can attach a huge sprocket to the midrive and hopefully be able to wheelie easily at 1200w (hopefully be able to do power wheelie, because of the extreme torque, would like to hear your predictions) since the hub is used most of the time the slower top speed of the mid drive doesn’t matter at all.
When the hub motor is in use the middrive chain will rest on a sprocket that slips completely because it’s on bearings. When it’s time to use the midrive I’ll move the chain to the active sprocket that attaches firmly to the hub motor and you’ll be able to use it (look at the attached pic). If I don’t do that the hub will drive the mid drive all the time and it’ll be inefficient, and if I use a one way freewheel you’ll get the loud clicks. The pedals will have a regular small one way sprocket.
The parts that would be used for this must be very rare since this is an uncommon build, but would kill for some part suggestions.
It’s way easier to understand using the attached pic but I’ll summarise:
1. Big sprocket that attaches solidly to the hub motor
2. Big sprocket where the chain can rest when the mid drive is inactive (that’s slips because it’s on bearings or any low friction solution)
3. A regular one speed freewheel for the pedal chain.
Thank you