Rear hub motor 12x157?

[MuF123]

Hi there,
I have been googling for many days how to electrify this bike, but I am still lost. I am looking for medium assist, not crazy "TURBO" modes like Bosch has, 10s battery, light weight solution. BBSHD would be a candidate if it was lighter or didn't have square tapered axle.

TSDZ2 (https://endless-sphere.com/forums/viewtopic.php?f=28&t=79788) had almost all checks:
-light
-torque sensor
-mid drive
-cheap
However frame has 83mm bottom bracket, while TSDZ2 supports 73mm max, no cigar.

So next best solution would be a rear geared hub motor with proper freewheel and disc mount, but I can't find any for 157x12mm thru axle. Maybe even 135/142/150x12mm could work with some kind of adapter? Preferably 32 holes, preferably something that can handle enduro/freeride usage? Am I asking for a unicorn?

Thanks for any input!

 

[markz]

Through-Axle motors
Crystalyte's "The Crown" is 3080 size, which means 30mm magnets/stator.
https://www.ebikes.ca/shop/electric-bicycle-parts/motors/mtc3080r-ta.html


IGH motors
305 is the slow winding and 395 is the fast winding. #'s are RPM
https://www.ebikes.ca/shop/electric-bicycle-parts/motors/igh-305.html
https://www.ebikes.ca/shop/electric-bicycle-parts/motors/igh-395.html

 

[MuF123]

Thanks for the tips! However I meant hub motors with planetary gears (not direct drive) with ability to use regular 10 speed cassettes for chain shifting. Any of those out there?

 

[markz]

Its using direct drive unto the IGH gears which I find fascinating how they've come up with that. Grin Tech keeps bumping out good product.

 

[MuF123]

It sounds great to be able to use internal transmission for myself And the motor, but I am not sure if they make them with 12mm thru axle...

 

[dogman dan]

Best bet is ditch the idea of electrifying your through hub bike. Get something with regular 135 mm dropouts. Re the gearing, you simply don't need 9 gears once you have a motor helping. So get a decent bike, and if its a 9 speed, change the rear shifter to a 7 speed shifter. Then all your decent geared rear hubmotors fit, and if you want, the BB will fit the mid drive, and keep it 9 gears.

Don't beat yourself to death trying to make your e bike such a beauty, a decent 10 year old MTB will make a fine ride.