What's the simplest motored bike I can build?

[jetpackjbf]

As the title says, I'm hoping to make a motored bike with as little tools as possible. I don't care if its slow and ugly, I just want one for laughs. I have a chainsaw, a bunch of screws, some wood, a drill, and a bike. Any thoughts?

 

[Chainlube]

As the title says, I'm hoping to make a motored bike with as little tools as possible. I don't care if its slow and ugly, I just want one for laughs. I have a chainsaw, a bunch of screws, some wood, a drill, and a bike. Any thoughts?

Take the clutch off the chain saw, whittle down the teeth on the clutch until a chain will run on them. Then figure out how to mount it on the bike.
A buddy of mine did that for his kid's bike.

 

[jetpackjbf]

Take the clutch off the chain saw, whittle down the teeth on the clutch until a chain will run on them. Then figure out how to mount it on the bike.
A buddy of mine did that for his kid's bike.

I was thinking of doing that, but it's a huge pain to remove the clutch. I'd still like to be able to use it as a chainsaw too, but that might be the easiest