Why shouldn't i build a Neumotor RC + planetary gear reduction drive?

[neptronix]

Not my cup of tea, just want some kind of drive that could adapt to any bike.
I think upsizing the gearbox is the right idea. I'm OK to leave out regen and use a freewheel also.

 

[Joaquin Suavve]

Just a thought( have not 3D modeled it to be sure)..But why can't a planetary gear set be a cooling fan as well?

 

[neptronix]

Maybe if you could make a sandwich adapter of sorts and cut holes in the motor casing etc.
A 3210 + planetary gear reduction is pushing it as far as width goes for a bike with 135mm dropouts. The weight may need to be slightly offset at that point.. I'd explore liquid cooling first.

 

[amberwolf]

Just a thought( have not 3D modeled it to be sure)..But why can't a planetary gear set be a cooling fan as well?

What do you do for gear lubrication, and keeping that lube clean of what the cooling fan will suck thru it?

Or is the cooling fan external to the gearbox / disc, which itself would still be sealed to keep the lube clean?

 

[rscamp]

I adapted a Neugart gearbox to an Astro motor for a chain puller drive. It worked pretty well. I suspect the Neugart gearbox is somewhat more robust though.