Double Clutching - Ford Focus Forum, Ford Focus ST Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace

Go Back   Ford Focus Forum, Ford Focus ST Forum > Ford Focus Discussions > Ford Focus & General Car Chat

Ford Focus & General Car Chat Discussion Forum relating to nonspecific Ford Focus models, car purchasing, auto industry news and any car talk.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Thread Tools Display Modes
Old 10-22-2006, 04:01 PM   #1
Focus Enthusiast
187bosshog's Avatar
Join Date: Sep 2006
Fan#: 39425
Location: Arlington,TX
What I Drive: 2003 white ZX3 Hatchback

Posts: 174
FF Reputation: 1 187bosshog Good Standing Member
Buy-Sell-Trade Rating: (0)
Double Clutching

so what is double clutching

187bosshog is offline  
    Reply With Quote
Sponsored Links
Old 10-22-2006, 04:05 PM   #2
FF Cleaning Squad
focusin's Avatar
Join Date: Mar 2004
Fan#: 4322
Location: Bay Minette,, AL
What I Drive: All Focus' sold

Posts: 11,959
FF Reputation: 63 focusin Excellent Standing Member
Buy-Sell-Trade Rating: (17)
Its from back in the day before Syncros were put in the transmission. What its is is as follows,

Starting with car in first..

Drive to desired RPM

Clutch in shift to neutral

Clutch out

Clutch back in

Shift to second.
Retired Moderator
GumpCrew #1 (dismantled)
focusin is offline  
    Reply With Quote
Old 10-22-2006, 04:28 PM   #3
bigjordan's Avatar
Join Date: May 2006
Fan#: 35026
Location: somewhere, NC
What I Drive: miata

Posts: 4,301
FF Reputation: 7 bigjordan Good Standing Member
Buy-Sell-Trade Rating: (1)
its for people who live their lives a quarter mile at a time
bigjordan is offline  
    Reply With Quote
Old 10-22-2006, 04:42 PM   #4
WitchCitySVT's Avatar
Join Date: Mar 2006
Fan#: 33699
Location: Salem, MA
What I Drive: 2012 Chevy Sonic 1.4 Turbo LTZ

Posts: 5,796
FF Reputation: 30 WitchCitySVT Great Standing Member
Buy-Sell-Trade Rating: (1)
Basicly only Truck Drivers still double clutch. BTW bigjordan you should be shot for rembering that and I should be shot for knowing where it came from.
BUILD# 840 out of 3985 BUILD DATE 4/1/2003 *RIP*

2003 Competition Orange SVT *Revived*
2012 Black Sonic 1.4 Turbo LTZ
WitchCitySVT is offline  
    Reply With Quote
Old 10-22-2006, 04:45 PM   #5
Saketherobot's Avatar
Join Date: Aug 2004
Fan#: 11210
Location: The PacNW
What I Drive: is paid for!

Posts: 2,962
FF Reputation: 1 Saketherobot Good Standing Member
Buy-Sell-Trade Rating: (1)
Originally posted by bigjordan
its for people who live their lives a quarter mile at a time
bullshit no one likes the tuna here!
Saketherobot is offline  
    Reply With Quote
Old 10-22-2006, 05:00 PM   #6
Focus Enthusiast
allen_rubin's Avatar
Join Date: Jul 2006
Fan#: 36836
Location: La Mirada /LA County
What I Drive: 2004 Cloud 9 ZX3 W/05 FE

Posts: 301
FF Reputation: 1 allen_rubin Good Standing Member
Buy-Sell-Trade Rating: (8)
You can do it that way or when your down shifting as well. It gives you a lil boost cuz theres no lag between. When the rpms have to catch up. It works really well.
SoCalFanatics #23
allen_rubin is offline  
    Reply With Quote
Old 10-22-2006, 05:31 PM   #7
SVT Robzor
Focus Fanatic
SVT Robzor's Avatar
Join Date: Aug 2005
Fan#: 26230
Location: Cumberland, Maine
What I Drive: 2004 CD Silver SVT

Posts: 1,578
FF Reputation: 5 SVT Robzor Good Standing Member
Buy-Sell-Trade Rating: (5)
[gravely, no-rules voice] ...and for those 10 seconds or less, I'm free [/gravely, no-rules voice]

Double clutching has its biggest use if your synchros stop working like they're supposed to. Like my old Neon, which didnt like to grab reverse, a double clutch gets everything realigned (I dont know the mechanical explanation, but that's how it works).

I USED to double clutch to downshift, there are 2 problems with that. First, whatever small amount of wear you save to the clutch material, you put a lot more stress on the TO bearing. Secondly, if you can RPM match double clutching, you can do it faster clutching once, and if you are actually matching correctly, it's still smooth as silk.

Until your snchros start to give out, I see no reason at all to live your life a quarter-mile at a time.
2004 SVT Focus
Custom front-bumper-mount bug guts; precision sprayed brake dust on OEM rims; 15% Pine Tree pollen over the clear coat.
No more SVT autocross, I drive the thing in the avatar.
SVT Robzor is offline  
    Reply With Quote
Old 10-22-2006, 06:05 PM   #8
Focus Rookie
Join Date: Oct 2006
Fan#: 40412
Location: Whitewater, Wi
What I Drive: '90 Eclipse 1.8 5 Speed

Posts: 12
FF Reputation: 1 DavenportCustoms Good Standing Member
Buy-Sell-Trade Rating: (0)
Synchros match the speed of the mainshaft to the speed needed so the gears mate in the transmition. When you double clutch, the clutch engages in neutral to the mainshaft but not to any gears. Now that the mainshaft is spinning slower than the previous gear (revs fall while shifting, duh) the mainshaft slows enough to be able to put it into the next gear, thus the synchros dont need to be used.

On downshifting, you blip while in neutral to get the engine/mainshaft speed up to where it needs to be. If done correctly you can go down two gears smoooth as buddah. If you ever played "need for speed underground 2" they simulate blipping on downshifts while dring.

In simplest terms, double clutching slows the mainshaft to the point needed to where synchros dont need to be used. Thats why you have to double clutch farm equipment, no synchros.

I think thats how it works anyway.
'86 F-150
'90 Eclipse

Focus Savings fund: 102.00
DavenportCustoms is offline  
    Reply With Quote
Old 10-22-2006, 06:37 PM   #9
fat pat
Focus Enthusiast
fat pat's Avatar
Join Date: Jan 2005
Fan#: 18326
Location: chicago
What I Drive: 2002 Pitch Black SVT Zx3

Posts: 485
FF Reputation: 1 fat pat Good Standing Member
Buy-Sell-Trade Rating: (2)
dont worry about it...its useless for most people. go for it if you want to save your synchros some wear, but its not for racing, its not for drifting, its not for modern transmissions...dont do it, vin diesel doesnt care about you
Oversteer scares the passenger
understeer scares the driver...
fat pat is offline  
    Reply With Quote
Old 10-22-2006, 08:18 PM   #10
Focus Fanatic
babyface's Avatar
Join Date: Nov 2005
Fan#: 29791
Location: GPW/Mt Pleasant/Indy, MI
What I Drive: '06 ZX4 ST, '06 Escape, '87 911 Cab

Posts: 4,340
FF Reputation: 5 babyface Good Standing Member
Buy-Sell-Trade Rating: (0)
i only do it it the porsche, because after 150k of hard driving, the synchros could use a little work.

lol, heel-toeing is much more usefull.

and double clutching used to required on all cars, before synchros.

in fact, i beleive bentley and rolls-royce used to send chaffuer drivers who would drive their cars to a special training thing, so they learned to double-clutch so smooth that they wouldnt disturb a wineglass or sometthiung like that.
ST Crew #1

Current Mods: Silverstars, iPad radio/navigation, center muffler delete, Hella 700FF driving lights, brakes, Red/White footwell LED's, lock-switch lights, Tigger doll from GF
babyface is offline  
    Reply With Quote

Bookmarks & Social Networks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 11:51 AM.

Copyright 2002-2014 All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Acura TLX or Fiesta ST. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.