Handbike hub

[Anko]

Hi everyone,

I’am a wheelchair user, and have a handbike that I can connect to my wheelchair for biking,
And from there on it is pure arm/hand power.

I now have a nexus 7 speed hub in this handbike wheel with build in brake (reverse direction
Peddling) that I would like to replace by a hub motor and combine this with an 6 speed freewheel
And connect it to the current chain. And for braking to mount a v-brake or a disc on the hub.

The wheel is a 20” and the biking speed is plm. 16-18 kmh or 10-12 mph

I would like to put in a 20” wheel with a HBS36R or MBG36R hub, and this is my question, which one to choose ?

I will use it for peddling assistance, or maybe some miles that I do need to paddle at all.

What motor will be the best fit, make no noise !! and has a good “freewheel” if I am riding without
Electric support, so have the less hub resistance.

Who can help me out ?

Thank, Anko

[Hardcore]

the mini motor for the freewheel mechanisme

[Bikemad]

What motor will be the best fit, make no noise !! and has a good “freewheel” if I am riding without
Electric support, so have the less hub resistance.

Hi andto the forum Anko,

   

The geared mini motor (MBG36R) is lighter, produces much better torque/watts and will give the least rolling resistance due to a freewheel device on the internal gears.
But looking at the negative side, it will be slower and the freewheel device will prevent regenerative braking and reverse from being used.
It may also be slightly noisier than the direct drive (HBS36R) hub, but apparently it is not too bad. Check out this post.

With a 20" rim on the mini motor you can expect similar speeds to the ones you mentioned, but without pedalling!

Higher speeds will be achievable if you can get your arms going fast enough to assist!

Alan