Quote:
Originally Posted by boxchain
I was thinking about this today and it hit me...two clutches. One between the engine and flywheel, and the other between the flywheel and driveshaft. When you want to glide or stop, disengage both  To start the engine, engage the engine one. Prob have to use a hand lever or grow another leg 
Consider this prior art (for any patent searches)  |
You are almost describing an inertia starter. An inertia starter doesn't receive energy from the engine/drive wheels, but it's entirely practical.
When you kill the engine and slow down, the inertia starter engages and gets up to speed. When stopped, an electric motor keeps the flywheel at speed...topping it up. When the engine is started, a clutch engages the inertia starter and turns over the engine.
I do like the elegance of your method of keeping everything inline. I was thinking of a starter replacement, but then you incur the weight penalties of two flywheels.
