What would happen if you cut an airhead camshaft in half and welded it back 180 degrees from what it was so that both cylinders fired simultaneously? Has any body talked about this and all the probable characteristics the new configuration would give the engine? It's just a thought experiment that could be entertaining. I wonder that the rocking couple from the crankshaft main bearing offset might be greatly amplified and give the bike a big head shake. Like a horse. Or could it eliminate that little shake completely ...................... and maybe disappoint some people who have grown to like that - to them endearing - behavior ?
Nothing !! 😛
Your engine would be coming up on 2 compression strokes at the same time. Your electric starter couldn't handle it.
Owning an old Airhead is easy.
Keeping an old Airhead running great is the true test.
Thanks for pointing out that likely probability, Wobbly. I'll just increase the starter power and now the engine is running, but how? Does it sound like it's self destructing? Is it jumping around and heading out the garage and down the road like a fish out of water? The compression force is now equal on both pistons at the same time. I can't help it -- I think like this.
It is interesting to think about. Eventually, I think the crankshaft would break, but until it did.... 😛
Best plan on moving to a house with a garage at the top of a very steep hill. 👿
Owning an old Airhead is easy.
Keeping an old Airhead running great is the true test.
The pistons both come to TDC at the same time now, the crankshaft 180 change would mean one was at BDC when the other was at TDC. Compression or exhaust stroke is determined by the cam-valves open or closed. It would give far more shake than now because the cylinders would not be at tdc at same time. Firing would be 90 degrees out and then 270.
Bob
The pistons both come to TDC at the same time now, the crankshaft 180 change would mean one was at BDC when the other was at TDC. Compression or exhaust stroke is determined by the cam-valves open or closed. It would give far more shake than now because the cylinders would not be at tdc at same time. Firing would be 90 degrees out and then 270.
Bob
It would have a high probability of running backwards,,,,like a old B Model MackTruck....
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