overkill pusher trailer

hey everybody, my name is David and I'm from Arizona. I have had a motorized bicycle for some time. Don't get me wrong, I like the mid-frame Chinese engines, but there wear characteristics, power band, and two-stroke sound has left me wanting more. Right now I have a 66 cc mainframe engine run to a 36 tooth rear sprocket on the 26 inch wheel. I want to build something with more torque.

I have on hand a motor that most people would consider overkill for pusher trailer, but this would be for "off road" use only. The motor have on hand is a 10 hp Yanmar diesel. Dry weight the engine weighs 121 pounds. It has a 1 inch in diameter driveshaft with the quarter-inch keyway. I know I will have to build a heavy-duty trailer, but this is also a project to test alternative fuels for diesel and the fuel efficiency for the weight of the bicycle. I've never built the bicycle trailer before, but I am eager to learn. The maximum RPM for the engine is rated at 3600 with a comfortable speed of approximately 3000. to be quite honest, I haven't a clue as to what gear ratio to put in, or where to get the drive parts for the project so any advice and information would be helpful.

I hope this isn't too much to ask.

Thank you for your time and I look forward to hearing your thoughts.


David