- Sat Jul 13, 2013 6:09 am
#26496
Oh gosh Norm ...I dont know where to start , supercharging single cylinder engines hosts a mass of problems and driving one on those tiny gears with a charger speed thats 1:1 , it might be better spinning one off the crank with a chain , they take a few horses off the engine to get a few more horses back but you might need a long induction pipe to hold the charge without blowing your pressure valve all the time .
I would think charging a Carbury V twin would be better .
My thoughts would be more at tuning a single pot engine to within an inch of it's life , 40 bhp with the full 612 kit or 45 bhp with the Fury head and GP carb .
I would look at the 50 bhp Jawa 2 valve singles for ideas , just 5 bhp extra to get from a Royal Enfield engine comes at a cost , camshafts with scary looking ramps hammer the crap out of the valve train .
I know the re-issue Manx Nortons had to be de-tuned a bit to make them more flexible , Gold stars only put out 40 bhp . I recon your best bet would be a 612 Fury running on methonal.
I have a lovely vane air compressor pump off a Sunderland flying boat that I was going to use as a super charger for a 2 stroke engine ..in fact I have the whole auxillery ABC engine as well ( pretty rare as ABC motorcycles converted the engines for it ) it was the first plane in the world to have an auxillery engine . You could always use nitro in the fuel for chemical supercharging !
