Jackshaft question

[Toby woodman]

I’m building a 5.5 hp bike. I was using a bike hub as a jackshaft but I have switched to some proper pillow block bearings. Is it okay to have both bearings on one side of the sprockets. I will attach a photo. The bike worked really well but it shredded the bearings after a few miles. I have lowered the gear ratio for more speed because the bike had too much torque. The second bearing is just clamped in place at the moment

 

[GW's Motorized]

Whith as low of a gearing you are going for I would try and get the bearing as close to the sprocket as you can to prevent the jackshaft from bending.

 

[Toby woodman]

Okay, is there a way to make the cranks wider so the pedal doesn’t hit the bearing

 

[GW's Motorized]

Are you looking a 3 piece or 1 piece crank?

 

[Toby woodman]

im not sure, the crank has a separate left side crank arm and the sprockets look to be attached to the right crank arm

 

[GW's Motorized]

DONSP1986 36T Wide Crank Assembly Kit 3pcs - gas Motorized bicycle https://a.co/d/inejdEG

I have this on my bike, it's not the best, but it works. I confined any for a multi speed

 

[Toby woodman]

thanks