I took this pic in the NATIONAL MOTORCYCLE MUSEUM ,Birmingham in the Uk, almost 2 years ago, apols for not getting all in , but as u can see, it is a bit specialUsually linked together with chain or belt linking front and rear engines together at drive side crankshaft ends, sometimes with added outboard bearings on the crankshaft ends, and then normal primary chain or belt to drive transmission on rear engine. One of the problems with that is reliability of the transmission and clutch under twice the power. Some, like the Hogslayer, use a stronger transmission in place of the old Norton box. Easier with pre-unit engines than later ones, because you don't have to deal with the extra transmission lump. If you hunt around on-line, you can find quite a bit of detail on some of them.
Ken
I’ve often wondered the same and kinda why I started this thread.I have always wondered..........
Since no two engines are identical, does the more powerful engine carry the weaker one or does the slower of the two hold back the the better running?
I have always wondered..........
Since no two engines are identical, does the more powerful engine carry the weaker one or does the slower of the two hold back the the better running?
John Gregory was (and still is) a mechanical genius. TC was the one who had to pull the trigger on that beast. TC is in the AMA hall of Fame. John should be. They are also very nice guys. It took a long time and a great deal of campaigning to get the AMA to put TC into the Hall of Fame despite the fact that they were world champions for 4 years running. They (the AMA) had a bad attitude, as drag racing was sanctioned by the National Hot Rod Assn. and not the AMA. Besides what Danno stated, they were the first ones to use a chrome moly frame and the big rear slick. They consistently beat bikes that had more power. It took 5 years for the other guys to catch up to their engineering mastery. The triple engine bike was in development when the British bike industry fell to pieces. This changed the financial situation for British bike dealers like TC and the triple project was stopped. TC still has that bike.Hogslayers tranny was a 2-speed Rambler overdrive unit. First Top Fuel drag bike to have more than one gear. Clutch was made from an earthmover brake.
I think the fuel injection was a mechanical unit from a 4-cylinder Offenhauser engine-cut in half for the two twins. The only thing wasted was the competition.Oh yeah, I am pretty sure that they were the first to use fuel injection too. It was fortuitous for them to be in Kenosha, WI. With the American Motors car plant right there. There was a lot of local talent in small independent shops.