Anybody Bother with Double Clutching?
02-17-2018, 11:59 AM
#1
Anybody Bother with Double Clutching?
I was wondering if the use of Active Rev Matching reduces wear on the syncros to the point where double clutching isn't needed anymore.
Popular Reply
02-17-2018, 12:54 PM
Le Mans Master
02-17-2018, 12:08 PM
#2
Instructor
I thought double clutching died when synchro's were created.
The only vehicles I've owned where double clutching was necessary was a 64 VW Beetle and my current sandrail.
The only vehicles I've owned where double clutching was necessary was a 64 VW Beetle and my current sandrail.
02-17-2018, 12:10 PM
#3
Someone double clutches a C7?
The following users liked this post:
woodsguy (02-18-2018)
02-17-2018, 12:10 PM
#4
Le Mans Master
It wasn’t necessary before ARM with modern manuals.
Last edited by 2K14C7; 02-17-2018 at 12:11 PM.
02-17-2018, 12:29 PM
#5
Le Mans Master
When you double clutch you blip the throttle with the transmission in neutral to spin the front part of the trans. and drive train up to match the speed of the rear wheels, correct?
If you have already done that then there is nothing left for rev matching to do.
For this reason though, rev matching is still not as good as an experienced driver since it is blipping the throttle with the clutch still in so only the engine speed is increased.
If you have already done that then there is nothing left for rev matching to do.
For this reason though, rev matching is still not as good as an experienced driver since it is blipping the throttle with the clutch still in so only the engine speed is increased.
Last edited by TEXHAWK0; 02-17-2018 at 12:47 PM.
02-17-2018, 12:35 PM
#6
I think you mean “does anyone rev match” any longer, maybe?
02-17-2018, 12:39 PM
#7
E-Ray, 3LZ, ZER, LIFT
Member Since: Sep 2007
Location: NE South Carolina
Posts: 29,487
Received 9,619 Likes
on
6,625 Posts
and then only to go into 1st that did not synchromesh. Have only driven standard shifts since that time as my DD. Never had to replace syncros in any. A few clutches but no syncros.The M7 has triple syncros, yep 3 concentric syncros, one carbon faced! Have not seen a post re syncro problems since I got my September 2013 built C7, Z51.
Transmissions are now using syncros in reverse (where selection is also blocked above a certain speed) so you don’t grind gears and make chips!
Last edited by JerryU; 02-17-2018 at 12:54 PM.
02-17-2018, 12:43 PM
#8
Team Owner
Member Since: Oct 2004
Location: altered state
Posts: 81,242
Received 3,043 Likes
on
2,602 Posts
St. Jude Donor '05
No need to rev match, double clutch or anything else.
If you had a 1950s dump truck maybe.
Rev match feature is mostly a gimmick for the avg guy same withe the "pop" you hear when shifting. Start, shift & drive.
If you had a 1950s dump truck maybe.
Rev match feature is mostly a gimmick for the avg guy same withe the "pop" you hear when shifting. Start, shift & drive.
02-17-2018, 12:44 PM
#9
Safety Car
Member Since: Dec 2009
Location: Oro Valley Arizona
Posts: 3,568
Received 2,371 Likes
on
1,164 Posts
Hmm?
What's a clutch?
The following 16 users liked this post by TEXHAWK0:
Blackbird13 (02-18-2018),
Boiler_81 (02-17-2018),
Boucherman (02-18-2018),
CandyRed77 (02-18-2018),
capnjim01 (02-17-2018),
and 11 others liked this post.
02-17-2018, 12:58 PM
#11
Why would you thinking double clutching helps a car with synchros up the ying yang, that doesn't need to be double clutched?
02-17-2018, 12:59 PM
#12
Le Mans Master
Of all my cars currently in my stable, this is the only one I double clutch...
02-17-2018, 01:09 PM
#13
Team Owner
Member Since: Oct 2004
Location: altered state
Posts: 81,242
Received 3,043 Likes
on
2,602 Posts
St. Jude Donor '05
We can thank the fast n furious movies for throwing this bs lingo out
Never heard the term 3/4 cam, stage 3 or full lope cam since the 70s.
"Full bolt ons"? whats that?
Everyone that had a set of headers, intake etc was still considered stock. Times have changed
Never heard the term 3/4 cam, stage 3 or full lope cam
since the 70s. "Full bolt ons"? whats that?
Everyone that had a set of headers, intake etc was still considered stock. Times have changed
Last edited by cv67; 02-17-2018 at 01:09 PM.
02-17-2018, 01:21 PM
#14
Le Mans Master
Member Since: Sep 2012
Location: Hagerstown MD
Posts: 6,876
Received 1,738 Likes
on
1,174 Posts
St. Jude Donor '15-'16,'18
OP: Do you drive an 18 wheeler in addition to your Corvette?
02-17-2018, 01:22 PM
#15
It transforms average manual shifters into shifting pros, like those who actually know how to heel/toe rev match, and can do it perfectly 100% of the time. Proper rev match, which ARM gives you every time, reduces wear and tear on the clutch and transmission, and keeps the suspension planted and free from upset by jerky shifts.
And to the OP, double clutching hasn't been necessary in street automobiles in at least half a century.
Last edited by Foosh; 02-17-2018 at 01:29 PM.
The following 2 users liked this post by Foosh:
JimNeedsC7 (02-17-2018),
Woodson (02-17-2018)
02-17-2018, 01:41 PM
#16
Quite the response! 
I'll admit it's been a couple of decades since I tore into a transmission, but back then the syncros were brass and would eventually wear out as they were used.
Based on the responses here, it appears that's no longer an issue.
I'll admit it's been a couple of decades since I tore into a transmission, but back then the syncros were brass and would eventually wear out as they were used.
Based on the responses here, it appears that's no longer an issue.
02-17-2018, 04:21 PM
#17
Team Owner
The last time I double clutched was when I had some bad noodles at a Chinese restaurant.
The following users liked this post:
JerryU (02-17-2018)
02-17-2018, 05:46 PM
#18
Racer
02-17-2018, 06:17 PM
#19
Race Director
Member Since: Mar 2001
Location: Bonneville Salt Flats, 223mph Aug. '04
Posts: 17,418
Received 5,213 Likes
on
3,457 Posts
FINALLY! A poster who must be even older than me!
Last edited by Avanti; 02-17-2018 at 06:19 PM.
