ok, i dont have a manual but i can drive one. ive never tried double clutching but ive heard its faster, is this true? b/c when im in my friends car and he double clutches it goes off from a start a lot faster.



-thanks

 

double clutching is where you hit the clutch, put the car in neutral, release the clutch, hit it again and put it in gear. big trucks do this to make sure they're in gear. contrary to fast and the furious, double clutching is not faster....

 

alright thanks
why is it faster in my friends car then? he just suck at regular shifting?

 

Double-clutching is how you shift a trans that has no synchros. You push the clutch in and take the trans out of gear; then you let the clutch out; then you reve the motor to about the speed it will be going at in the next gear, and while it's at that speed, push the clutch in, thereby leaving the clutch disc and the next gear spinning at the same speed as the mainshaft; then you push the clutch in, and shift it into the next gear, and it goes with very little grinding. After you get real used to driving a particular vehicle, with practice you can get it to go into gear with virtually no grinding at all. 18-wheeler transmissions don't have synchros, that's why they do it. It's not faster than using the synchros; it takes about a second to a second and a half to make a shift that way, just like the 18-wheelers you hear shifting as they drive along.

That technique has nothing to do with starting from a dead stop.

I think your friend is doing something else.