Maninblack4612
Tour Winner
This must be one of the poorest analogies I've ever heard. An engine supplies power. The "engine" in a golf swing is the bloke on the end of the club. The shaft is the transmission, if anything, and, as the connection between the player & the ball, it is obviously very important.To me the shaft is the engine.
The main problems caused by shafts is people using a shaft which is too stiff to provide any action on the ball from a slow swingspeed & /or too long to control. I wouldn't say that, for the average player, there is an ideal shaft but you must have one which generally suits you.