powershifting
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From: New Jersey
Originally Posted by red_wing_2121
YOu do not need to rev-match on newer transmissions. That is why newer transmissions have synchronizers in them, so you do not have to rev-match. It creates a smoother shift.
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Joined: 03-06-06
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From: Arizona
Originally Posted by Pully Police
Well...maybe to help clear things up a bit....You guys sound like you are talking about heel and toe.
- Powershifting: Upshifting with the clutch while still on the throttle....requires good tires.
- Floating the gears, Floatshifting, Cornershifting, Syncshifting (ALSO SEE: HEEL AND TOE): Upshifting/Downshifting without the clutch and using rev-matching to sync the speed of the engine to the speed of the tranny in the gear that you wish to be in.
- Double Clutching: From Wikipedia: When shifting up on a double-clutched vehicle, the clutch pedal is pressed and the gearbox shifted into neutral. The clutch pedal is then released. As the engine idles with no load, the rpms will decrease until they are at a level suitable for shifting into the next gear. The driver then depresses the clutch again and shifts into the next gear. The whole manouver can, with practice, take no more than a fraction of a second, and the result is a very smooth gear change. However, in order to downshift, engine revs must be increased while the gearbox is in neutral and the clutch pedal is released. This requires the driver to shift into neutral, release the clutch pedal, apply throttle to bring the revs up to a suitable speed, depresss the clutch again, and finally shift into gear. This operation can be very difficult to master, as it requires the driver to gauge the speed of the vehicle accurately and is often conducted as cars in front slow down. Basically: 5th gear....clutch in...shift to neutral...clutch out...blip throttle...clutch in....shift to 4th...clutch out.
- Heel Toe: From Wikipedia:
Heel-and-toe is a driving technique used in performance driving. It involves operating the accelerator and brake pedals simultaneously with the right foot, and has the purpose of freeing the left foot for normal activation of the clutch or double declutching while downshifting.
Heel-and-toe is usually used before entry into a turn while a vehicle is under braking to prepare for the transmission to be in the optimal gear to accelerate the vehicle out of the turn. Another benefit of downshifting *before* entering a turn is that if one makes a mistake and doesn't get the revs matched correctly, the jolt to the drivetrain won't upset the vehicle as badly if it's still going in a straight line; the same jolt while turning may upset the vehicle enough to cause a nasty spin.
Performance vehicles are usually modified (if necessary) so that the heights of the brake and accelerator pedals are closely matched to permit easy use of heel-and-toe, and that the pedals are not too far apart.
The name, stemming from earlier automotive designs where the accelerator pedal was on the left and could be actuated with the heel while the brake pedal was actuated with the toe, is misleading regarding how the technique is carried out in modern cars, i.e., operating the brake with the left edge of the foot, while rocking it down and to the right to operate the throttle. With practice, it becomes possible to smoothly and independently operate both pedals with one foot. The technique is common in all forms of motorsport, especially rallying.
-P
- Powershifting: Upshifting with the clutch while still on the throttle....requires good tires.
- Floating the gears, Floatshifting, Cornershifting, Syncshifting (ALSO SEE: HEEL AND TOE): Upshifting/Downshifting without the clutch and using rev-matching to sync the speed of the engine to the speed of the tranny in the gear that you wish to be in.
- Double Clutching: From Wikipedia: When shifting up on a double-clutched vehicle, the clutch pedal is pressed and the gearbox shifted into neutral. The clutch pedal is then released. As the engine idles with no load, the rpms will decrease until they are at a level suitable for shifting into the next gear. The driver then depresses the clutch again and shifts into the next gear. The whole manouver can, with practice, take no more than a fraction of a second, and the result is a very smooth gear change. However, in order to downshift, engine revs must be increased while the gearbox is in neutral and the clutch pedal is released. This requires the driver to shift into neutral, release the clutch pedal, apply throttle to bring the revs up to a suitable speed, depresss the clutch again, and finally shift into gear. This operation can be very difficult to master, as it requires the driver to gauge the speed of the vehicle accurately and is often conducted as cars in front slow down. Basically: 5th gear....clutch in...shift to neutral...clutch out...blip throttle...clutch in....shift to 4th...clutch out.
- Heel Toe: From Wikipedia:
Heel-and-toe is a driving technique used in performance driving. It involves operating the accelerator and brake pedals simultaneously with the right foot, and has the purpose of freeing the left foot for normal activation of the clutch or double declutching while downshifting.
Heel-and-toe is usually used before entry into a turn while a vehicle is under braking to prepare for the transmission to be in the optimal gear to accelerate the vehicle out of the turn. Another benefit of downshifting *before* entering a turn is that if one makes a mistake and doesn't get the revs matched correctly, the jolt to the drivetrain won't upset the vehicle as badly if it's still going in a straight line; the same jolt while turning may upset the vehicle enough to cause a nasty spin.
Performance vehicles are usually modified (if necessary) so that the heights of the brake and accelerator pedals are closely matched to permit easy use of heel-and-toe, and that the pedals are not too far apart.
The name, stemming from earlier automotive designs where the accelerator pedal was on the left and could be actuated with the heel while the brake pedal was actuated with the toe, is misleading regarding how the technique is carried out in modern cars, i.e., operating the brake with the left edge of the foot, while rocking it down and to the right to operate the throttle. With practice, it becomes possible to smoothly and independently operate both pedals with one foot. The technique is common in all forms of motorsport, especially rallying.
-P
Yah, Yah. Good explanations! I used to have to double-clutch some of my older muscle cars with damaged syncro's. Very common with older 4-speeds without 1st gear syncro's. When I was a young stud, I could double clutch any gear transistion in less than a half second. Practiced not because I wanted to, but because I had to.
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Joined: 07-02-05
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From: Mesa, Az
Originally Posted by StreetDreamz
Powershifting requires no clutch work...trust me. You should always rev match even when you do use the clutch. It's okay. We don't all race here. And I hope you aren't talking about my transmission being "burnt to ****". Lol.
Powershifting does in fact require the use of your clutch. Go ahead, try and speed shift without using the clutch and see what happens. Powershifting is just hammering the clutch and the shifter really fast without letting up from WOT. That is all there is to it. Doing so will net you the best track times possible. I usually don't do this in 1-2 shifts though as it bangs my factory motor mounts to much because they are JUNK.
Originally Posted by BullDog71ss
Powershifting does in fact require the use of your clutch. Go ahead, try and speed shift without using the clutch and see what happens. Powershifting is just hammering the clutch and the shifter really fast without letting up from WOT. That is all there is to it. Doing so will net you the best track times possible. I usually don't do this in 1-2 shifts though as it bangs my factory motor mounts to much because they are JUNK.
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From: Cali
Originally Posted by hatrickstu
it doesnt always in every car yield the fastest time. no car is exactly the same and not all cars respond the exact same to the same styles of driving, obviously. i have not seen any improvement in my track times when i tried powershifting and just shifting regularly (but quickly)
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