Pyrotechnic
New Member
- Local time
- 12:42 PM
- Joined
- Oct 16, 2009
- Messages
- 14
I have an old 24" aluminum frame mountain bike I want to motorize. The engine I have is a Tecumseh 2.5HP 127CC motor. Don't know the weight but it's aluminum and not very heavy.
I was considering putting the motor all the way in the rear behind the tire. The reason is, I feel that whatever mounting apparatus I used would be lighter and more rigid than having it over the top of the rear tire. Also, it would allow the drive chain to follow a short and simple path. It's going to need 2 stages of gear reducion, and the mounting points for could be integrated into the mounting rack.
My concern is that the bike will be unbalanced and wheelie prone. I know I can slide the seat forward on the rails a touch, and I can shift my weight foward if necessary. I know it's going to be easier to do wheelies, but as long as it's not unreasonable then I can live with it.
Has anyone ever done this before ?
I was considering putting the motor all the way in the rear behind the tire. The reason is, I feel that whatever mounting apparatus I used would be lighter and more rigid than having it over the top of the rear tire. Also, it would allow the drive chain to follow a short and simple path. It's going to need 2 stages of gear reducion, and the mounting points for could be integrated into the mounting rack.
My concern is that the bike will be unbalanced and wheelie prone. I know I can slide the seat forward on the rails a touch, and I can shift my weight foward if necessary. I know it's going to be easier to do wheelies, but as long as it's not unreasonable then I can live with it.
Has anyone ever done this before ?