I've been wondering what are the actual benefits of double clutching? I mean well it takes a little longer but is there any benefits during daily driving or racing? I don't know if its really worth it cuz if ya fck up you can say to the tranny.
I've tried double clutching during normal driving and it seems a little more smooth however, i would think the slave cylinder would wear out twice as fast...

Anyone care to elaborate on this?

 

Lets clarify!
Double clutching is about control... not speed.

I, personally, only double clutch when down shifting, as it's smoother on the tranny.

 

so double clutching while up shifting is a ?

I've heard about it being done for both

 

Double clutching is only really useful on downshifting, as it lets you match the revs of whatever gear you're downshifting into, and so you're already making more power when you start moving under the new gear. That's why racecar drivers do it, so the car isn't bogging down when they come out of turns.

It really came about when there were no synchros on transmissions and unless you rev-matched, you were going to grind gears. So, it helps with saving your synchros on downshifts.

 

Not under the right conditions.
Some road racers and rally drivers will double clutch on an up shift in a corner to better control the power going to the ground.

But for our cars and typical driving, yeah... your best not to double clutch an up shift.

 

I always rev match when i down shift but i don't double clutch it...

 

It keeps Vin Diesel off your back.

 

haha I don't think i'll worry about him.. im faster then that veilside

 

Can someone explain to me what double clutching is as i have no clue.

 

Example: Going from 3rd gear down to 2nd gear, put in the clutch all the way, give a quick rev up to about 3k rpm (varies on how fast your going) let off the gas and then let clutch out while revs are still up, resulting in a smooth downshift

 

I thought that was called rev matching!!! ****! I have been doin it wrong all this time. Well can u now explain rev matchin to me.

 

Yea, I rev match when downshifting.... LOL!

 

Me to

 

Double clutching (down shift example)->
- Let the engine reduce the speed of the car.
- Clutch and take car out of gear.
- Release clutch.
- Rev to matching engine speed for new gear.
- Press clutch.
- Put car in gear.
- Release clutch.



Notice the two clutch presses.... hence 'double clutch'.

 

There's another step to actually double-clutch as opposed to rev-matching:

1. Press clutch in
2. Shift to neutral
3. Let clutch out
4. Blip throttle to reach desired RPM's
5. Press clutch back in
6. Shift into gear

It's the extra step of letting the clutch out before you blip that's the difference. Saves wear on the clutch plates IIRC.

EDIT: Dangit Omega you beat me... lol

 

Well... if people don't get it now, they need a smack...

 

Ahhh ok.

I often find myself doing this.

Press clutch in
Go from 5th to 3rd while foot is still on clutch
Tap gas to desired RPM (around 3500)
the let clutch out and mash the gas

Poor clutch.....

 

it works for turbo cars..and helps with spinning on drag stripes that arent preped well

 

rev matching is usefull. not only does it reduce wear on syncros it also helps reduce wear on the clutch as the clutch isnt trying to pull the engine rpm up when downshifting.

double clutching is pointless. it is the norm for old trucks that are non syncronised, you had to do this to get the gears to match rpm. howerver, in the 50s they came up with syncros, a device that does the rpm matching for you. if a transmission has syncros, all you are doing by double clutrching is putting extra wear on the clutch and related components.

 

granny shifting, not double clutching!!! just heel and two when you downshift, it makes me feel cool

 

can you double clutch when coming to a stop and just go through all of the gears? I know when im stopping, I dont put the car into neutral, I just hold the clutch down and move to the desired gear (usually only 1 lower) after I hit or rev to my desired rpms. Even when racing. is that wrong?

 

Theres some conflicting information here...Do Cobalts benefit from double clutching on the downshift, or will you just end up shortening the life of your clutch?

 

there's no need to double clutch. like mentioned, double clutching is an outdated thing from before cars had synchros. it's not necesary at all on a modern car.

 

so just rev match on the downshift, but don't double clutch right?

 

**** I know Vin Diesel double clutchs really good in his red rx-7 against Paul Walkers Green eclipse, god that race was so amazing......Damn i wish Paul wouldnt have granny shifted!