11.11.2022, 19:24
(07.11.2022, 09:48)wergan schrieb: When positioning the piston to TDC your way, the next strokes will be firing and exhaust, meaning one complete turn of the crancshaft is wasted until intake of gas is about to start.
The very point is that "one complete turn" of the crankshaft is NOT wasted, but instead used to your advantage.
When the "next strokes" are firing, exhaust, and intake, you are kicking against minimal resistance, for the greatest duration of time. This allows your kick to spin up the flywheel to a high level of inertia before encountering the next compression stroke.
The opportunity for a successful start is maximized when the compression stroke is encountered at the highest level of inertia and flywheel speed that your kick can impart. You are certainly welcome to disagree with the approach. However, it is a LONG standing, and well established, method that comes from decades of rider experience with big British singles.
What the decompression mechanism attempts to do, at best, is a poor imitation of the above. And, as CR stated, that is only when it is "working as expected". When the rider manually positions the piston to just past TDC (top dead center) they are simply increasing the odds for success.
I feel a lot more like I do now than I did when I got here!
1970 Honda SL100, 1973 Honda SL350, 1976 Bultaco Sherpa T, 1983 Montesa Cota 349, 1986 Yamaha SRX-6, 2021 Electric Motion ePure Race
1970 Honda SL100, 1973 Honda SL350, 1976 Bultaco Sherpa T, 1983 Montesa Cota 349, 1986 Yamaha SRX-6, 2021 Electric Motion ePure Race