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Old 06-18-2003, 09:10 PM   #1
Hazdaz
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Default Is this a bad shifting technique??

I do this sometimes - mostly without doing it on purpose or realizing it and was wondering if you guys thought it was a bad thing to do:
Ok, right before I shift gears (while still in gear) I hit the gas just a hair more to get the revs up higher (a few hundred RPMs), THEN shift up.
It tends to be a much smoother transition - since by the time I am in the other gear, the engine has already settled to that lower speed naturally. And since I have read that the WRX's "likes" to be shifted slow (espesially 1-2), I then am not (purposefully) shifting fast to "force" the two speeds to match.

Not sure if my explanation makes sence. I can try elaborating on it. But I would be curious what you guys have to say about this and if I should stop doing it or if its no big deal.

Thankx.
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Old 06-18-2003, 09:44 PM   #2
SubbyRS
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I presume you blip the throttle with the clutch dis-engaged but you're right, it does smooth things out...I do the same on my Legacy & it works a treat...
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Old 06-18-2003, 09:54 PM   #3
Hazdaz
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Well thats the thing... i know its supposed to be good shifting technique to clutch-in... shift to N.. blip throttle... clutch-in... shift-up.
BUT what I am talking about is car still in gear.. hit gas a little extra (as in, a little more than I just had it down while driving).. THEN clutch-in.. shift up... clutch-out. So is THIS bad?
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Old 06-18-2003, 11:39 PM   #4
Raslian
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I don't see why that would be any worse for the car.
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Old 06-19-2003, 01:08 AM   #5
kengsta
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how bout just release gas...clutch in...shift up....clutch out...gas?
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Old 06-19-2003, 01:11 AM   #6
maaw
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the throttle blips faster when clutch is out and in neutral than it does with the clutch in and in gear. Give it a try it makes a large difference.
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Old 06-19-2003, 10:09 AM   #7
goobie
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Default ???

Quote:
Ok, right before I shift gears (while still in gear) I hit the gas just a hair more to get the revs up higher (a few hundred RPMs), THEN shift up.
Why are you trying to bring your revs up for upshifting? I would think you would want to bring your revs down to match the slower speed of your next gear. I find that comming out of first gear even with a LW flywheel I'm always waiting on the engine to wind down before I let the clutch out in second. If I were to rev between the shift, I would be waiting even longer for the engine to come down to speed.

Unless I've misunderstood your shifting technique, I think it would be counter-productive on an upshift. Downshift, different story all together. In a downshift, you should bring your revs up, so the engine speed is equal to the transmission speed for the lower gear you are about to select. That way, you are not using the clutch to "drag" your engine up to speed which in turn slows the car down and causes unneeded wear on your clutch.

Do a search on "rev match" and/or "Heel Toe". There is a wealth of information (some right, some not-so-right) in this forum about the proper methods of shifting.

Cheers!
Chad
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Old 06-19-2003, 11:04 AM   #8
Hazdaz
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GOOBIE - the reason being is that I have read multiple times that the WRX tranny likes to be shifted "slowly".. meaning that if I have to take my time in shifting, the revs have already dropped a good amount - sometimes past where the next gear would be starting off at.
If I hit the gas a hair BEFORE i shift, then it usually gives me a few extra millisecond to shift (which is 'supposedly' good for the tranny) before I get it into the next gear - and then usually the revs would match what the next is starting at. This tends to be smoother.

I have not gotten into heel-toe shifting yet - and I know that its the "best" way to shift, but I was just wonder if what I was doing was bed/good or neither.
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Old 06-19-2003, 11:54 AM   #9
totoherbs
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Quote:
Originally posted by Hazdaz
GOOBIE - the reason being is that I have read multiple times that the WRX tranny likes to be shifted "slowly".. meaning that if I have to take my time in shifting, the revs have already dropped a good amount - sometimes past where the next gear would be starting off at.
If I hit the gas a hair BEFORE i shift, then it usually gives me a few extra millisecond to shift (which is 'supposedly' good for the tranny) before I get it into the next gear - and then usually the revs would match what the next is starting at. This tends to be smoother.

I have not gotten into heel-toe shifting yet - and I know that its the "best" way to shift, but I was just wonder if what I was doing was bed/good or neither.
I dont get it.... roll off gas, hit clutch, shift..... if the revs fall to much blip when you in N but its never happed to me. If you dont roll off the gas and just slam in the clutch it will take longer to shift.

As for heal-toe shifting its for downshifting and wouldnt help you here.
read thies

http://forums.nasioc.com/forums/show...highlight=heel

and

http://www.spdusa.com/driving.htm
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Old 06-19-2003, 01:46 PM   #10
goobie
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Quote:
GOOBIE - the reason being is that I have read multiple times that the WRX tranny likes to be shifted "slowly".. meaning that if I have to take my time in shifting, the revs have already dropped a good amount - sometimes past where the next gear would be starting off at.
Ok, now I see where you are comming from. But, If you're tansmission takes that long to shift you've gotta problem! You should be able to easily shift like totoherbs suggested.

Also just by shifiting like you describe and adding gas at the last second before you shift instead of rolling off the gas, just think about all that extra torque you are building up in the clutch/transmission prior to releasing it. You should really minimize the torque force being applied on the clutch/transmission before you disengage it by rolling off the throttle then clutching in. Think of you tranny as a rubber band. The more torque you apply to it, the furthur it stretches. Releasing the the clutch while it's carrying a torque load would be like letting the elastic band snap back to it's original form. Rolling off the gas will allow the "rubber band" to slowly release it's energy and will have stored none or very little torque when released. This should make for much smoother shifting and arguably help preserve your tranny and clutch.

totoherbs,
Good link you posted to the SPD site!



Chad
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