final version



http://www.youtube.com/watch?v=rO6Ndcee ... r_embedded

beautiful work, congratulations ..... you did not think the liquid cooling system, would be better for the rear cylinder and a twin cylinder for ignition PVL It has liquid cooling now. ok, i understood. and if, instead of doubling the spark plug cable, divide in two the cable that carries electrici...

Yes the cylinders fire at the same time, hence the name boxer. This needs to be so, else there would not be any volume change in the carter to suck in fuel/air. The double ignition is to avoid interference. 2 spark-plugs parallel on one coil will not work, only the one with least resistance will spa...

I'm thinking that the ciao engine rotate in clockwise, but your second engine is counter-clockwise, it's possible to have serious problem with the.. ignition(?) ( sparks.. ) correct observation, however: No problem second cylinder cam oval is rotated and spot welded to compensate, and synchronized ...

it's alive!!!!

One more under construction

buonasera, Let me introduce myself, I am the Inventor of the twinboxer vespa engine, thank you for all your positive response. I built the first twinboxer engine in 1991-1992 since there was no internet it was easy to keep secret :mrgreen: It used 2x 46mm cylinders and 2x 13mm carburetors it was bui...