An excellent overview of 6MT driving technique. Courtesy of a G35 Veteran!
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From: al, eguor notab
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From: West Palm Beach, FL
as ive been driving stick for 8 years now, i can tell u that the way he explains the both double clutching and rev matching downshift is incorrect. double clutching is for DOWNSHIFTING not for upshifting. what the above post is stating that when u down shift--hold the clutch down, rev match while the clutch is held down, then proceed to downshift. when u press down on the clutch, it essentially seperates the engine from the trans so when downshifting in this manner u will only match ur engine speed from lower rpm to higher rpm, completely leaving out transmission speed.
to properly double clutch down shift,
--car is revving at 3k in 4th
--clutch in, remove car from fourth, put into neutral, clutch out
--rev match to speed of lower gear (since clutch is now out, trans and engine are now engaged. trans speed will now match engine speed)
--clutch in and place car into lower gear.
this whole process only takes an extra second to do. this guy explains it and demonstrates very well video of proper double clutching:
http://video.google.com/videoplay?do...88575741675515
this is how u are supposed to double clutch. u dont need this in newer cars b/c syncros line up the gears for u so u dont grind when going into a lower gear. the only time i NEEDED to do this is when driving a neighbors '41 buick.
to properly double clutch down shift,
--car is revving at 3k in 4th
--clutch in, remove car from fourth, put into neutral, clutch out
--rev match to speed of lower gear (since clutch is now out, trans and engine are now engaged. trans speed will now match engine speed)
--clutch in and place car into lower gear.
this whole process only takes an extra second to do. this guy explains it and demonstrates very well video of proper double clutching:
http://video.google.com/videoplay?do...88575741675515
this is how u are supposed to double clutch. u dont need this in newer cars b/c syncros line up the gears for u so u dont grind when going into a lower gear. the only time i NEEDED to do this is when driving a neighbors '41 buick.
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the point of my original post was to correct what somebody else said that was blatently wrong...
but u can double clutch for two reasons--1. lining up the gears so they dont grind when u downshift and 2. spinning the trans/clutch at the same speed as the engine so the clutch doesnt have to bite hard to match engine to trans speed.
i do it for reason #2. clutch is basically a super duty brake and wears out....use ur brakes less/not as hard, ur gonna replace them less...use ur clutch less/not as hard, ur not gonna have to replace it. simple as that
but u can double clutch for two reasons--1. lining up the gears so they dont grind when u downshift and 2. spinning the trans/clutch at the same speed as the engine so the clutch doesnt have to bite hard to match engine to trans speed.
i do it for reason #2. clutch is basically a super duty brake and wears out....use ur brakes less/not as hard, ur gonna replace them less...use ur clutch less/not as hard, ur not gonna have to replace it. simple as that
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From: Queens
Great thread...now im more nervous about driving the 6MT because i didnt think theres such a process to do it all correctly, lol...i'll get the hang of it soon, ive mostly only driven manual cars on short term basis, valet parking, driving friends car for a day, etc
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From: stoon Canada
i was wondering say im at a stop, i punch it from 1st to 2nd to find myself going like 80km/h and throw it into 6th. is this bad for the car? and how do i properly launch the G37 ive driven MT's before but this is a totally new drive for me.
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From: DC Metro Area
80 km/h is around 50 MPH, and I'd usually target 5th for normal driving at 50 MPH. That's probably somewhere around 2500 RPMs for 5th @50.
I'd just upshift through the gears as needed until I reached a comfortable gear. After thinking about it, I usually shift like this in normal, every day driving:
(edited below because I actually looked at what I was doing today, lol)
stop to 1st ~ 1500 (try to avoid slipping clutch)
1st to 2nd - around 2000, and if I'm in more of a hurry, 3000
2nd to 3rd - 2500 - 3000
3rd to 4th - 3k
4th to 5th - 3k
5th to 6th - 3k
When I'm trying to launch it hard, I usually grab first at around 3000, then take the upshifts to just under red lines for better or worse. Anything over 3000 into first seems like a clutch burn fest and I'm not sure how much more you can drop the clutch on before reaching the point of diminishing returns on the slip factor.
I learned to drive manual on a G35 and never killed the clutch after getting the hang of it. After learning to drive a manual, I can't go back to an auto because it just doesn't feel like you are driving the car; it's like the car is driving you.
I'll tell you what, the G35 seemed to give you less time to shift than the G37 does. I'm not sure if the G37 has a heavier flywheel or what, but it seemed easier to drive smoothly than my G35 after I adapted to the clutch engagement point. Am I crazy?
Last edited by icel0rd; Jul 8, 2008 at 04:01 PM.
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as ive been driving stick for 8 years now, i can tell u that the way he explains the both double clutching and rev matching downshift is incorrect. double clutching is for DOWNSHIFTING not for upshifting.
http://video.google.com/videoplay?do...88575741675515
http://video.google.com/videoplay?do...88575741675515