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Originally Posted by Bikeguy Joe  Yeah, but that explanation says "intake valve" and "exhaust valve" we don't have those. Also, how does the cylinder's volume have anything to do with it? The volume of air in the manifold is not the same as the cylinder's volume.
How do you have "residual vacuum" when the other air in the same place is supposedly under pressure?!?
That "scientific explanation" is a bunch of crap. |
Hello Bikeguy,
This is my explanation of how it works - just think of it as a Supercharger for a 2-stroke ( atomized fuel supercharger )
The intake pulse that is felt between the cyclinder and the carb when -off the throttle or when the piston is down covering the intake port between the engine and the intake manifold causes air to try to go back out thru the carburetor - it has no place to go but back out. The boost bottle gives that intake pulse atomized fuel a place to go and be stored in the momentary condition. Then when the throttle is open, the regular carburetor to intake air fuel mixture + what is stored in the boost bottle is sucked into the engine and you get some what of a supercharger effect. The atomized fuel going into the boost bottle is in a gas form so it is easily "digested" by the engine when it comes back out of the boost bottle.
.................quarkdude