Drivetrain Questions and info regarding transmissions, clutches, etc.

Double Clutching???

Old Mar 22, 2009 | 09:56 PM
  #16  
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Originally Posted by dofu
Careful... you don't want to blow the welds off your intake manifold!
screw that i dont want his floor boards falling off
 
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Old Mar 22, 2009 | 10:03 PM
  #17  
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Originally Posted by Defs
Double clutching is useful in certain circumstances like getting into 1st when rolling or just taking some load off the synchros when doing a higher RPM downshift.

For the average downshift it's not needed, but not a bad skill to have. It's easier than heel and toeing correctly.
There is no need to double clutch... just rev match and you should be fine. Double clutching is a technique used to shift up or down if the transmission does not have synchros.

The only time double clutching would be effective in any way is if for some reason, you needed to shift from say, 5th to 2nd. And even still, I don't see why rev matching alone wouldn't work. The only instance I can think of where double shifting works great is if you're grinding a gear. Drive your car like it doesn't have any synchros, and you'll be able to get into gear without grinding anymore! (at least until you have time to get it fixed)

But it is skill worth knowing, and I think everyone should at least take some time to learn how to double clutch, just in case. And plus, you never know... you might end up behind the wheels of a truck that needs to be double clutched someday.
 
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Old Mar 22, 2009 | 10:54 PM
  #18  
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Originally Posted by dofu
There is no need to double clutch... just rev match and you should be fine. Double clutching is a technique used to shift up or down if the transmission does not have synchros.

The only time double clutching would be effective in any way is if for some reason, you needed to shift from say, 5th to 2nd. And even still, I don't see why rev matching alone wouldn't work. The only instance I can think of where double shifting works great is if you're grinding a gear. Drive your car like it doesn't have any synchros, and you'll be able to get into gear without grinding anymore! (at least until you have time to get it fixed)

But it is skill worth knowing, and I think everyone should at least take some time to learn how to double clutch, just in case. And plus, you never know... you might end up behind the wheels of a truck that needs to be double clutched someday.
These transmissions shift pretty easily despite the complaints on this site, so it's not so hard to get into 1st from a roll, but most cars will REQUIRE a double clutch to get into 1st at anything above a stop.

Like I said, it's not necessary, but it prevents wear on the synchros on high RPM change downshifts.

It's pretty simple to do as well. I find myself still doing it after owning an Integra that had a balky 2nd gear synchro.
 
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Old Mar 23, 2009 | 07:58 AM
  #19  
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I don't know what is 2x clutching or heel and toes. All I know is that if I need to drop a gear or 2 to pass a car on hwy I simply clutch in throw in the gear i want, blip the throtle then let the clutch out and floor it. Need some practice to not miss shifting.
 
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Old Mar 23, 2009 | 08:04 AM
  #20  
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another waste of a thread by someone who just watch F&F and believed the BS in it
 
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Old Mar 24, 2009 | 05:49 AM
  #21  
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From: Silicon Valley
Originally Posted by Defs
These transmissions shift pretty easily despite the complaints on this site, so it's not so hard to get into 1st from a roll, but most cars will REQUIRE a double clutch to get into 1st at anything above a stop.
That's not because of the synchros... newer trannys lock you out of first unless you're rolling slow enough...
 
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Old Mar 24, 2009 | 05:50 AM
  #22  
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Originally Posted by escobar929
another waste of a thread by someone who just watch F&F and believed the BS in it
"Ganny shifting, not double clutching like you should"
 
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Old Mar 24, 2009 | 09:08 AM
  #23  
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ROFL @ this thread. Do a search, hell do a google search.
 
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Old Mar 24, 2009 | 11:58 AM
  #24  
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I double clutch all the time in my Tacoma because the RPM's drop pretty slowly in that thing between shifts. I sometimes do it in my G in real slow, casual, relaxing type driving too because it makes the shifts smoother(less jerky) and saves wear on the throwout bearing as opposed to holding the clutch in for an extra half a second per shift all the time.

It's not at all necessary, but I like the art of driving a standard... so I like to double clutch sometimes.
 
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Old Mar 24, 2009 | 01:02 PM
  #25  
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The only time i double clutch in my G is when im going from reverse to 1st.
 
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Old Mar 24, 2009 | 01:35 PM
  #26  
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I learned D.clutching on heavy equipment & when I first had an old Bug with a schitty gearbox.
It was realllllllly hard to un-learn it, because I didn't even think about it anymore.

I think the only time I use it now, is on cold mornings when things are stiff, shifting 1st to 2nd.
Other than that a complete waste of time.
 
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Old Mar 24, 2009 | 04:23 PM
  #27  
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Originally Posted by dofu
That's not because of the synchros... newer trannys lock you out of first unless you're rolling slow enough...
What sort of magical device in the transmission is "locking you out of first?"


Never seen that in any manual transmission...

BTW - if you could double clutch correctly, you'd see this isn't true because you'll be able to select first at higher speeds with a good selector speed match.
 
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Old Mar 24, 2009 | 04:34 PM
  #28  
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Originally Posted by dofu
"ganny shifting, not double clutching like you should"
"toretto! Swat raided my house disrespected me in front of my family!"
 
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Old Mar 24, 2009 | 04:56 PM
  #29  
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From: Silicon Valley
Originally Posted by Defs
What sort of magical device in the transmission is "locking you out of first?"


Never seen that in any manual transmission...

BTW - if you could double clutch correctly, you'd see this isn't true because you'll be able to select first at higher speeds with a good selector speed match.
Why would you want to? First gear sucks... it's really only good to get you into second...
 
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Old Mar 24, 2009 | 04:58 PM
  #30  
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Originally Posted by Defs
What sort of magical device in the transmission is "locking you out of first?"


Never seen that in any manual transmission...

BTW - if you could double clutch correctly, you'd see this isn't true because you'll be able to select first at higher speeds with a good selector speed match.
Correct. The downshift into 1st is difficult for the synchos to match but rev matching would make it possible with a skilled shifter.
 
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