dumping/sidestepping the clutch

[vw100]

ok i have heard this a lot : "Never dump or sidestep the clutch" but what is the reasoning behind it? Does it damage the pressure plate ?
i am asking because i think i do that when taking off after i feel it sync (reaching the sync point) on the clutch
another scenario is after taking it out of gear (neutral)

[Rope-Pusher]

Methinks they might have really meant to say "With the transmission in-gear, don't rev up the engine to its redline speed and then sidestep your foot off the clutch pedal when you launch the car".

If the trans is in Neutral, it's not going to do much if any harm.

If you are already at the point where the clutch is "hooking up" (i.e. finding a sex partner for the night) with the flywheel and pressure plate (menage a trois?), then again sidestepping or otherwise allowing the clutch pedal to rise rapidly isn't likely to cause any issues.

It's not the sudden clamping of the clutch disk that causes heartburn, it's the sudden clamping when there is the inertia of the engine on one side and the inertia of the vehicle on the other side and the speeds of the two sides are nowhere near being equal that results in high loading being borne by the driveline. If the trans is in Neutral, or if the speeds of the two sides are nearly equal already, then there won't be any damage to the driveline by side-stepping the clutch.

[theholycow]

Also, dumping and sidestepping aren't the same thing.

Sidestep: Floor the clutch pedal, then slide your foot off the side of the pedal and allow it to pop up on its own. This is inherently abusive, but much more so as part of a launch. Before I came to this forum, I called it popping the clutch.

Dump: Controlled but very fast movement where your foot remains in contact with the pedal the whole time. Once everything is hooked up, dumping the clutch is my recommendation.

[Rope-Pusher]

Also, dumping and sidestepping aren't the same thing.

Sidestep: Floor the clutch pedal, then slide your foot off the side of the pedal and allow it to pop up on its own. This is inherently abusive, but much more so as part of a launch. Before I came to this forum, I called it popping the clutch.

Dump: Controlled but very fast movement where your foot remains in contact with the pedal the whole time. Once everything is hooked up, dumping the clutch is my recommendation.

For "The Flash", they are about the same. For the old man down the street who shudda had his license taken away years ago, they are very different. For those somewhere in between, it is a vast sea of gray.....unless you have a Bimmer with a restriction in the clutch hydraulic line that slows down the pedal return and the clutch doesn't clamp quickly no matter what you do.

[RITmusic2k]

Thankfully that clutch delay valve is removable.

[Rope-Pusher]

Thankfully that clutch delay valve is removable.

Those are NOT the sentiments of your differential!

[RITmusic2k]

Good thing my feelings about it are indifferential.

[Rope-Pusher]

Good thing my feelings about it are indifferential.

That's a matter of a pinion.

[kevinf]

[vw100]

Methinks they might have really meant to say "With the transmission in-gear, don't rev up the engine to its redline speed and then sidestep your foot off the clutch pedal when you launch the car".

If the trans is in Neutral, it's not going to do much if any harm.

If you are already at the point where the clutch is "hooking up" (i.e. finding a sex partner for the night) with the flywheel and pressure plate (menage a trois?), then again sidestepping or otherwise allowing the clutch pedal to rise rapidly isn't likely to cause any issues.

It's not the sudden clamping of the clutch disk that causes heartburn, it's the sudden clamping when there is the inertia of the engine on one side and the inertia of the vehicle on the other side and the speeds of the two sides are nowhere near being equal that results in high loading being borne by the driveline. If the trans is in Neutral, or if the speeds of the two sides are nearly equal already, then there won't be any damage to the driveline by side-stepping the clutch.

this was really helpful I often hear people say that jerky upshifts damage the clutch well isn't that supposed to stress the whole drivetrain and not the clutch? i agree you can stress that clutch if you release it really slow or feather it, but that would make the shift smooth so it wont be classified as a jerky upshift anyway

[stock15wrx]

You can.chirp in third if u wanted to. bitbif you do youre a moron imho