MAC 7T with 20" wheel??

[olemetry]

Hi guys. I used know a lot more but forgot a lot about the torque/speed stuff, but. . . I have an existing 7T on a 29er and it is fun and fast!! But could I have a bike shop spoke the 7T on a 20" wheel for a different bike or would this not be advised? also, I know speed is factor of many different things, but what ball park speed would i get on a 20" - obviously slower than the 29er. thanks

 

[StudEbiker]

7T MAC @ 36v is a 350rpm (loaded) motor according to Cell_Man's site. In a 20" wheel it won't be incredibly fast, but it will climb very very well.

According to my quick down and dirty calculations, that motor should give you about 20mph @ 36v (LiFePo4) in a 20" wheel.

 

[Ben Wilson]

My 6T gives me 25mph on 38v in a 20" wheel for reference.

 

[olemetry]

Good stuff. Thanks yall. Also, I use 48V on my 7T - which may explain why its such a beast. I take it that it may be difficult to find a 20" frame that has a wide enough rear fork to suit the hub? Or should most frames fit it?