hub fitment question

[neber kenezer]

It looks like this motor will fit this bike if the dropouts are compressed together. Has anybody experienced problems with compressing the dropouts to fit a hub motor?

https://www.amazon.ca/AW-Electric-B...86&sprefix=1500+watt+hub+motor,aps,300&sr=8-7
the hub width is 135 mm

https://www.pinkbike.com/buysell/3711236/
the rear dropout width on this bike is 140 mm

I'm also planning to run a 7 speed hub

thankyou

 

[indianajo]

I would use a stack of washers. Bikes with cast aluminum frames can fracture if the frames are bent. Steel frames generally retain their tensile strength when bent. You can determine which frames are steel with a magnet. Magnet sticks, it is steel.
If you want something thicker than a hardware store washer, you can drill 13 or 14 mm holes in a piece of strap steel, then cut to length. Or aluminum. The washer doesn't have to be round. I do round the corners with a file to avoid cutting my fingers on the barb later during maintenance. Like changing a tire or tube.

 

[harryS]

Agree, that' pinkbike is probably alloy. You don't want to squeeze it very much. Maybe just the width of a washer. However, you can often put the tabbed motor washers inside the frame instead of outside the frame, which easily takes up 4-6mm.

Where you going to put a battery on that frame?