A heavy duty friction driver.

[Intrepid Wheelwoman]

https://www.youtube.com/watch?v=SxhpFwGV_I8

I thought this was clever. Using the back half of a small motor scooter would make for a really good friction drive unit.

 

[cannonball2]

This was one of Deacons favorite ideas, driving an FD with another wheel. Seems like maybe he did it with an electric scooter set up.

 

[Ludwig II]

I've seen that idea used on a trike somewhere. It's probably the ultimate answer to wet grip.

 

[Ludwig II]

I've shared this one round a bit. It really does make far more sense than a little roller that is asked to do a job it's not big enough for.

 

[Tyler2012]

Yeah but by the time you get the engine set up to drive the smaller wheel, wouldnt it be easier to just do a belt drive? I guess if you had an old scooter laying around that would be nice to try something different and get a more efficient friction drive...

 

[Ludwig II]

I like the novelty value of it.

 

[mat_man]

This guy has chopped the rear end of a Go-Ped Sport frame with the 10" wheel driving on the bike's wheel:

090529 Chainsaw Powered Bicycle
https://www.youtube.com/watch?v=da9NaBMKCjY

 

[Intrepid Wheelwoman]

Cool, - it looks like it works well too

 

[Ludwig II]

Now, what would it be like in wet weaher? Interesting.