10-31-2009, 10:59 AM | #15 |
Drives: 2011 2SS RS, 1968 ragtop Join Date: Apr 2009
Location: Indiana
Posts: 1,850
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I must be a dope. I don't follow what the the problem is with downshifting. It's probably the simplest part of driving a stick shift vehicle.
CamK18, if you downshift with the revs too high, the engine will aggressively gear down. If you pop the clutch when downshifting (releasing the clutch pedal too fast) it may jerk, and if the revs are too high you will also chirp the tires. Try lowering the revs before downshifting from 3rd to 2nd. If you're going too fast it usually won't let you put in second gear anyway.
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1968 Camaro Convertible LS1, T56
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10-31-2009, 11:04 AM | #16 |
Drives: 2010 2ss/rs Join Date: Sep 2009
Location: Austin
Posts: 1,016
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10-31-2009, 08:50 PM | #17 | |
Quote:
You are obviously used to European or Asian cars with their "cut through butter" manuals. Welcome to the world of the muscle cars. Now you know why you have to rev-match on the downshifts. If you don't the rear end locks up and loses its traction. It can come around on you very quickly. That is also why you don't downshift in a turn. If you miss the correct blip the car will spin out. Conversly, if the revs are too high when you let the clutch out, the car will try to jump forward and you lose traction on the front end. Also keep in mind the rev limiter may not save you if you release the cluch while shifting at super high revs. Rev-matching is an art, as is heel and toe, which you will want to try soon, and requires practice to become proficient. Your car has lots of torque down low so don't keep shifting-down at high RPMs. The imports have their torque higher up. That's why they have to shift at higher revs. Try down-shifting around 3000 RPM and blipping the throttle to around 4500 RPM. Clutch should be e released reasonably quickly before the RPMs drop too far and you lose the rev-match. This should put you right in the power band in the lower gear and you are all set to rumble. Again, double clutch requires two pumps on the clutch pedal, between which, while the gear lever is in neutral, the throttle is blipped to rev-match, before releasing the pedal for the second time. Wastes time and is not required with synchromesh gears. Also, avoid downshifting into first, unless you are just crawling along. The gear is just too steep to do it comfortably. You will just stand the car on its nose. As long as the car is moving, second gear will give you lots of acceleration. Cheers. Happy blipping. |
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11-03-2009, 09:05 AM | #18 | |
Drives: 2023 Sharkskin ZL1 M6 Join Date: Oct 2009
Location: Austin, TX
Posts: 153
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Quote:
Blip the throttle and get it just right. Especially if you doubleclutch, the stick seems to be "sucked" into the gear when you get the revs just right, i.e. if you revmatch not only does the car not lurch but it goes in easier. |
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11-03-2009, 12:30 PM | #19 |
just can't seem to leave
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just don't double-clutch these transmissions.
there ain't no need
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Eve ('00 FRC): hot-air intake
Rowan ('09 H3): 5spd mom-mobile Penny ('99 Sierra): 5.3 / HD 5spd... gone but not forgotten Samson ('18 HD): compounded 408 |
11-03-2009, 01:50 PM | #20 |
Drives: 2023 Sharkskin ZL1 M6 Join Date: Oct 2009
Location: Austin, TX
Posts: 153
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No need but
A: It's fun (gratifying to time it all right) B: It IS reduced wear (albeit on something that will not wear out anyway) C: Tactile aid in finding the revs when revmatching - you can feel it and do final corrections while pushing in the gear on the second clutch-in. By *need* - there's no *need* to use a clutch at all in 4-5-6 if you can match the engine/drivetrain load in and out of gear and get the timing perfect - double-clutching provides another dimension to the driving experience, that can practically aid revmatching if you're not after the absolute in speed on the shift (and that becomes moot too if you're doing a wide jump like 6th to 3rd) |
11-04-2009, 12:00 AM | #21 |
just can't seem to leave
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point noted
__________________
Eve ('00 FRC): hot-air intake
Rowan ('09 H3): 5spd mom-mobile Penny ('99 Sierra): 5.3 / HD 5spd... gone but not forgotten Samson ('18 HD): compounded 408 |
11-05-2009, 08:03 PM | #22 |
Drives: 2010 2SS rally yellow camaro Join Date: Nov 2009
Location: FSJ b.c.
Posts: 1
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i got my 2010 ss about a month ago, iv put 2400ish km on it and the syncro in second went. iv been driving stick all my life and actually drive a rig for a living and know how to shift. has anyone else had tranny problems like this?
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