hows does it make it faster?

[ToyotaNick]

sorry, i know this is the wrong place to put this but yall are my people lol so here it goes.even though i do not drive a sports car i have always wondered how double clutching makes you faster or makes the car faster... please explain because i just cant figure it out!

 

[Joe Egolf]

Double clutching does not make anything faster in fact it will make you slower.It is really not necessary to double clutch these days unless you are driving an older car with no syncro's in low or a worn tired out car with bad tranny synchro's, IMOP

 

[zcruz]

If you are say in 5th gear on the highway at 70 mph and you wanted to shift into 4th or even 3rd and you just slammed it into one of those gears, the clutch would have to speed the engine up to match the lower gear ratio. Thus slowing you down momentarily. If you rev the engine between the downshift to match the intended rpm for the lower gear that you have selected, then the shift will be smoother and faster with no "lag". Then go the extra measure and inbetween the shift while reving the engine to your optimum rpm, (while the stick is in neutral) you release the clutch pedal momentarily. This speeds up the transmission input shaft and the clutch friction disc to match the optimum engine rpm. thus even less "lag".... get it?

 

[ToyotaNick]

ooooooooo ok thanks.

 

[H2o]

If you are say in 5th gear on the highway at 70 mph and you wanted to shift into 4th or even 3rd and you just slammed it into one of those gears, the clutch would have to speed the engine up to match the lower gear ratio. Thus slowing you down momentarily. If you rev the engine between the downshift to match the intended rpm for the lower gear that you have selected, then the shift will be smoother and faster with no "lag". Then go the extra measure and inbetween the shift while reving the engine to your optimum rpm, (while the stick is in neutral) you release the clutch pedal momentarily. This speeds up the transmission input shaft and the clutch friction disc to match the optimum engine rpm. thus even less "lag".... get it?

also, if you were going around a turn and downshifted without double clutching, and popped the clutch, the rear end (in rear wheel drive car) could slide out. seems like it is always better to accelerate out of a turn to keep rear end planted. I don't know how much this applies to big, heavy, jacked up trucks like ours

 

[tntoyota]

If you are say in 5th gear on the highway at 70 mph and you wanted to shift into 4th or even 3rd and you just slammed it into one of those gears, the clutch would have to speed the engine up to match the lower gear ratio. Thus slowing you down momentarily. If you rev the engine between the downshift to match the intended rpm for the lower gear that you have selected, then the shift will be smoother and faster with no "lag". Then go the extra measure and inbetween the shift while reving the engine to your optimum rpm, (while the stick is in neutral) you release the clutch pedal momentarily. This speeds up the transmission input shaft and the clutch friction disc to match the optimum engine rpm. thus even less "lag".... get it?

"clutch" and syncros, the less work your sycros have to do is less wear on them, i.e last longer....

 

[ToyotaNick]

"clutch" and syncros, the less work your sycros have to do is less wear on them, i.e last longer....

yeah but why does it matter? its a toyota part, they last forever anyways haha

 

[tntoyota]

yeah but why does it matter? its a toyota part, they last forever anyways haha

On one hand Yes, on the other hand (as in I never bought a Toyota from a person that even knew you could change your tranns oil...) No



and there trannys are not really as over built as most other things, motor, chassis, suspension, axles, TC

Strong units for there designed intent, yes

 

[FredTJ]

Simply learn how to shift, both upshift and downshift, without the clutch (other than starting off from a full stop) and not worry about it.
This is a good technique for you manual people anyway for off road use.




Fred

 

[WarDamnEagle]

If you are say in 5th gear on the highway at 70 mph and you wanted to shift into 4th or even 3rd and you just slammed it into one of those gears, the clutch would have to speed the engine up to match the lower gear ratio. Thus slowing you down momentarily. If you rev the engine between the downshift to match the intended rpm for the lower gear that you have selected, then the shift will be smoother and faster with no "lag". Then go the extra measure and inbetween the shift while reving the engine to your optimum rpm, (while the stick is in neutral) you release the clutch pedal momentarily. This speeds up the transmission input shaft and the clutch friction disc to match the optimum engine rpm. thus even less "lag".... get it?

I'm sorry guys but this is one of those threads that needs to go into the urban myth category (or to the bottom of the pile somewhere). No offense to the author above (I could have picked on someone else) but you can do the same thing by giving the engine the right amount of gas before you release the clutch while shifting. I just tend to do this naturally when in a hurry, whether I'm accelerating or decelerating.

Double clutching is only "faster" in an old Mack truck without a synchronised transmission...I know because we had one. If you missed second you had to stop and start over....not pretty on the Interstate with a 40' 1968 Greyhound trailor behind you fully loaded with sweet potatoes.