Can someone explain what "double clutching" means?

I was just watching "Ice Road Truckers" and one of the drivers was training a new diver. He told the new driver to "double clutch." What does that mean?

Comments

4 Responses to “Can someone explain what "double clutching" means?”
  1. Chris says:
    May 12, 2010 at 11:41 am

    On older technology transmissions without some kind of synchronization system, the engine and transmission would not be traveling at the same speed when you attempted to switch gears. The "double-clutching" technique has the driver release the clutch while no gear is selected (Neutral) which brings the transmission and engine to the same speed. The clutch is then reapplied, a gear is selected and the clutch is released again and you are in the new gear.

    This method is essentially a waste of time on any new car you drive because the transmission has a system that does this automatically.

  2. jim says:
    May 12, 2010 at 11:41 am

    It mean to hit the clutch to pop it out of gear, once its out of gear, rev or drop the rpm’s, depending on if your going up or down a gear, hit the clutch again and pull it in to gear.

  3. itsheidiyo says:
    May 12, 2010 at 11:41 am

    say for example your in 4th gear, and you wish to double clutch into 5th gear, you would be in 4th, put the clutch in, move the shifter into neutral, release the clutch, rev the motor, push the clutch back in, slide the shifter into 5th gear, and rev once more then let the clutch back out. That would be double clutching

    It’s typically used for cars that do not have synchros, to aid in lining up the collar to the gear correctly. newer transmissions have synchros which aid in lining them up for you.

  4. ravenjudge says:
    May 12, 2010 at 11:41 am

    step on the clutch, shift to neutral, let off clutch, step on clutch, shift to next gear, let out clutch. it takes awhile to get used to.