what is it? I’ve heard two explanations. what is the advantage? muchos gracias,
jb
What I do, that people tell me is double clutching, is to go from first to third via neutral rather than second.
Since the top end of first is close enough to the bottom end of third, but not exectly. If they overlapped exactly you could just slide up in one step.
I believe double-clutching is shifting gears via the following sequence:[list=1][li]Depress clutch[]Shift transmission from original gear into Neutral[]Release clutch[]Apply some throttle to get engine (and transmission internal gears) speed where it needs to be for next gear[]Depress clutch again[]Shift transmission into new gear[]Release clutch[/list=1]In almost any modern car, the transmission has synchronizers that render this procedure unnecessary (they achieve step 4, obviating the need for steps 3 and 5).[/li]
The reason it was ever necessary is difficult to explain without pictures. Howstuffworks makes mention of the technique on this page in their treatise on manual transmissions.
This probably won’t be helpful, but you just never know, do ya?
Nice job, Brad. I used to have to double-clutch on an old pickup I drove, but never quite knew why it was necessary.