downshifting for acceleration-steps?
3rd Gear Member
Joined: Jul 2006
Posts: 639
From: British Columbia
RE: downshifting for acceleration-steps?
heh
if ur car is stock it goes something like this :
cruise in 3rd at around 2k
someone wants to race
u clutch in, blip the throttle and shift to 2nd with the clutch still in
*** this is what happens next ***
either the crappy drive by wire throttle doesnt rev at all and you are still sitting at 2k, or you poke the gas too much and you rev all the way to 4K looking like a tool
ive had my car for 6 months,8 out of 10 tries i can usually get a decent rev- match, but there are times when poking the gas does absolutely nothing !
but a tune in soon in order
if ur car is stock it goes something like this :
cruise in 3rd at around 2k
someone wants to race
u clutch in, blip the throttle and shift to 2nd with the clutch still in
*** this is what happens next ***
either the crappy drive by wire throttle doesnt rev at all and you are still sitting at 2k, or you poke the gas too much and you rev all the way to 4K looking like a tool
ive had my car for 6 months,8 out of 10 tries i can usually get a decent rev- match, but there are times when poking the gas does absolutely nothing !
but a tune in soon in order
4th Gear Member
Joined: Apr 2006
Posts: 1,313
From:
RE: downshifting for acceleration-steps?
Practive going from fourth to third at like 50-60 mph. Depress clutch, shift, blip, lift clutch before tach falls, and then apply gas.
If you get it right, it is more like you are feeding in the throttle as you are coming up with the clutch, and are almost to the floor with the accelerator at the same time you are up with the clutch all the way.
If you get it right, it is more like you are feeding in the throttle as you are coming up with the clutch, and are almost to the floor with the accelerator at the same time you are up with the clutch all the way.
Thread Starter
2nd Gear Member
Joined: Sep 2006
Posts: 165
From:
RE: downshifting for acceleration-steps?
thanks to all...
I figured it's just a lack of practice. This is my first manual tranny car and I've got less than 3k miles on her as it is. Too used to automatics..hehehe
I'll tell you what though..it was an awesome feeling with the car screaming at 80+ in 3rd gear and realizing..."oh dang..I have 2 other gears!" ;-)
I figured it's just a lack of practice. This is my first manual tranny car and I've got less than 3k miles on her as it is. Too used to automatics..hehehe
I'll tell you what though..it was an awesome feeling with the car screaming at 80+ in 3rd gear and realizing..."oh dang..I have 2 other gears!" ;-)
3rd Gear Member
Joined: Mar 2006
Posts: 865
From: New Hampshire
RE: downshifting for acceleration-steps?
ORIGINAL: doode
heh
if ur car is stock it goes something like this :
cruise in 3rd at around 2k
someone wants to race
u clutch in, blip the throttle and shift to 2nd with the clutch still in
*** this is what happens next ***
either the crappy drive by wire throttle doesnt rev at all and you are still sitting at 2k, or you poke the gas too much and you rev all the way to 4K looking like a tool
ive had my car for 6 months,8 out of 10 tries i can usually get a decent rev- match, but there are times when poking the gas does absolutely nothing !
but a tune in soon in order
heh
if ur car is stock it goes something like this :
cruise in 3rd at around 2k
someone wants to race
u clutch in, blip the throttle and shift to 2nd with the clutch still in
*** this is what happens next ***
either the crappy drive by wire throttle doesnt rev at all and you are still sitting at 2k, or you poke the gas too much and you rev all the way to 4K looking like a tool
ive had my car for 6 months,8 out of 10 tries i can usually get a decent rev- match, but there are times when poking the gas does absolutely nothing !
but a tune in soon in order
Joined: Nov 2006
Posts: 8
RE: downshifting for acceleration-steps?
I'll tell you what though..it was an awesome feeling with the car screaming at 80+ in 3rd gear and realizing..."oh dang..I have 2 other gears!" ;-)
3rd Gear Member
Joined: Sep 2006
Posts: 784
From: California
RE: downshifting for acceleration-steps?
ORIGINAL: xbone
Get an automatic and let the OBD figure it out, it can think faster than any of us anyway. Pedal down go fast pedal up slow down, nice n simple.
Get an automatic and let the OBD figure it out, it can think faster than any of us anyway. Pedal down go fast pedal up slow down, nice n simple.
3rd Gear Member
Joined: Sep 2006
Posts: 853
From:
RE: downshifting for acceleration-steps?
I rev match my down shift even during my normal driving.. Sounds great and keeps the syncros in better shape.
Heel-Toe is much easier on a race car as they have the pedlas setup for it.
Heel-Toe is much easier on a race car as they have the pedlas setup for it.
Joined: Dec 2006
Posts: 14
RE: downshifting for acceleration-steps?
I noticed a couple people said to keep the clutch in the whole time. This will work, but it might be hard to get it into gear if you don't speed up the input shaft.
To double-clutch, you let the clutch out while in neutral and rev the engine to match the gear you are going into (slightly higher rpm is smoother than slightly lower). This will let the engine spin up the input shaft of the tranny while you rev so that then you shift into the lower gear (clutch in for the shift) they are closer to matching speeds. This is easier on the synchros and will let the car go into gear easier (don't force the shifter on a synchromesh transmission).
Howstuffworks.com has a nice article on manual transmissions. It doesn't teach you to double-clutch, but it will explain what an input shaft, or layshaft is to those that don't know. Lots of good articles on there, actually.
To double-clutch, you let the clutch out while in neutral and rev the engine to match the gear you are going into (slightly higher rpm is smoother than slightly lower). This will let the engine spin up the input shaft of the tranny while you rev so that then you shift into the lower gear (clutch in for the shift) they are closer to matching speeds. This is easier on the synchros and will let the car go into gear easier (don't force the shifter on a synchromesh transmission).
Howstuffworks.com has a nice article on manual transmissions. It doesn't teach you to double-clutch, but it will explain what an input shaft, or layshaft is to those that don't know. Lots of good articles on there, actually.
3rd Gear Member
Joined: Mar 2006
Posts: 865
From: New Hampshire
RE: downshifting for acceleration-steps?
ORIGINAL: luggage
I noticed a couple people said to keep the clutch in the whole time. This will work, but it might be hard to get it into gear if you don't speed up the input shaft.
To double-clutch, you let the clutch out while in neutral and rev the engine to match the gear you are going into (slightly higher rpm is smoother than slightly lower). This will let the engine spin up the input shaft of the tranny while you rev so that then you shift into the lower gear (clutch in for the shift) they are closer to matching speeds. This is easier on the synchros and will let the car go into gear easier (don't force the shifter on a synchromesh transmission).
Howstuffworks.com has a nice article on manual transmissions. It doesn't teach you to double-clutch, but it will explain what an input shaft, or layshaft is to those that don't know. Lots of good articles on there, actually.
I noticed a couple people said to keep the clutch in the whole time. This will work, but it might be hard to get it into gear if you don't speed up the input shaft.
To double-clutch, you let the clutch out while in neutral and rev the engine to match the gear you are going into (slightly higher rpm is smoother than slightly lower). This will let the engine spin up the input shaft of the tranny while you rev so that then you shift into the lower gear (clutch in for the shift) they are closer to matching speeds. This is easier on the synchros and will let the car go into gear easier (don't force the shifter on a synchromesh transmission).
Howstuffworks.com has a nice article on manual transmissions. It doesn't teach you to double-clutch, but it will explain what an input shaft, or layshaft is to those that don't know. Lots of good articles on there, actually.