How do you connect chain to motor drive shaft?

bundaburg

New Member
Sep 5, 2012
3
0
0
West Coast
Was planning on rigging a weedwacker engine to my bike, but not sure how to rig the chain up. How do you direct drive people do this, without any welding?
 
Last edited:

2door

Moderator
Staff member
Sep 15, 2008
16,337
154
63
Littleton, Colorado
You're going to need some kind of clutch. A centrifugal would be the way to go. You don't want just a direct drive. The engine would always be engaged to the rear wheel, no matter if it was running or not. You'll need to find a clutch that will either fit or can be adapted to the motor shaft. Depending on many factors such as tire size, engine rpm and torque, a gear reduction of some ratio will also be necessary.

You might want to explore a friction drive as opposed to chain drive. That will simplify the project but the above suggestions will still apply.
Check through some of the information found in our DIY section for non-kit motor installations.

Tom