Hey, guys.
I have an idea for a small engine. Basically what I want to do is take 4 small identical 2-stroke engines and hook them all together. Think weed-wacker engines, 25cc or so.
This would go in a small motorcycle chassis, with some sort of gearbox.
Now, the two strategies I have are:
1: chain them together in series, with no modifications to the actual engines.
2: build a new block and crankshaft, and mount the cylinders to that, to give me an inline 4.
The first option is obviously the easiest, but less satisfactory. It would be hard to get good cooling, as the engines would have to be mounted on the long axis of the bike.
The second option would be best, but harder. I think it would be within my capabilities, but definitely stretching them.
The second hurdle would be tuning the engine.
Then of course, a gear box. For this to work the way I want, I would need a lot of gears. I'm thinking a 4 or 5 speed gearbox with a two speed transfer case, unless someone out there can show me a ten speed gearbox.
Obviously I am just fleshing this idea out, don't have anything on paper yet, but I thought I'd pick your collective brains before going any further.
So, comments, suggestions?