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Old 04-29-2004, 08:13 PM   #1
FuJi K
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Unhappy Driving style affecting my gas milage

So I've just started driving recently, January 'til current in my GF4 5spd. Yes, it's been 3 years since I registered... This double clutching has become a habit and yea it uses gas everytime I double clutch (and sometimes heel toe downshift, but only when I'm really pushing the car at a desinated environment).

This has an effect on gas milage. But I can't really resist from doing this because it goes into gear so much easier. It's become a habit everywhere I go. It makes things go so much faster than having to wait for the syncros....then again the time difference is when going from like 5th to 3rd is about the same waiting for the syncros to do their job...

Time to drive like a grandpa...let syncros do work...
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Old 04-29-2004, 08:38 PM   #2
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I don't believe double clutching or rev matching is using enough gas for you to even measure the loss. And what car are you driving that has such slow synchros?
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Old 04-29-2004, 09:29 PM   #3
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I can't imagine double clutching is causing the poor gas mileage
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Old 04-29-2004, 09:49 PM   #4
IUPwrx02
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you know i have owned an manual shift my whole life and even work in an auto parts store and still, to this day, have no clue what double clutching is. can someone explain it to me?
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Old 04-29-2004, 10:41 PM   #5
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also explain heal toe please..........
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Old 04-29-2004, 10:44 PM   #6
Mike Wevrick
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There's a thread every 3 days on it. Basically it means shift into neutral, clutch out, (blip throttle if downshifting,) put clutch back in, shift to next gear, clutch out.
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Old 04-29-2004, 10:45 PM   #7
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Heel-toe is when you want to rev-match during a downshift without taking your foot off the brake. You have to keep part of your right foot on the brake while tapping the gas with another part. I find it easier to use the left and right sides of my foot rather than literally heel and toe.
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Old 04-29-2004, 10:58 PM   #8
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Oh and yeah the double-clutching cannot be using enough gas to notice.
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Old 04-30-2004, 09:10 AM   #9
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I tried double clutching and found absolutely no difference whatsoever in the shifting effort; if I push the clutch in, push the gear from whatever position its on to whatever position I want it in, and release the clutch it works flawlessly. If I release the clutch while the gear is in neutral, press it again, and release it when the gear is in position it does not aid shifting in any way and only makes me look spastic while I'm going "clunk clunk" with the clutch pedal trying to push it in and out as quickly as possible to match the speed at which I can perform the much easier task of simply pushing it in once.
I guess I just don't get it Didn't subaru specifically put synchronizers on our gear boxes so we wouldn't have to drive like we had a 1960s mustang???
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Old 04-30-2004, 09:21 AM   #10
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Quote:
Originally posted by powerlabs
Didn't subaru specifically put synchronizers on our gear boxes so we wouldn't have to drive like we had a 1960s mustang???
pretty much
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Old 04-30-2004, 09:39 AM   #11
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Yeah, you don't really need to double-clutch, although it does help if you want to downshift into 1st.
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Old 04-30-2004, 10:09 AM   #12
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Quote:
Originally posted by powerlabs
I guess I just don't get it Didn't subaru specifically put synchronizers on our gear boxes so we wouldn't have to drive like we had a 1960s mustang???
You need to watch Fast and the Furious a few more times, then you'll realize that driving this way gives you mad skillz. Then you won't need to Granny shift, which apparently is very uncool.
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Old 04-30-2004, 10:11 AM   #13
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Quote:
Originally posted by powerlabs
I tried double clutching and found absolutely no difference whatsoever in the shifting effort; if I push the clutch in, push the gear from whatever position its on to whatever position I want it in, and release the clutch it works flawlessly. If I release the clutch while the gear is in neutral, press it again, and release it when the gear is in position it does not aid shifting in any way and only makes me look spastic while I'm going "clunk clunk" with the clutch pedal trying to push it in and out as quickly as possible to match the speed at which I can perform the much easier task of simply pushing it in once.
Sounds like you weren't matching revs properly. If done properly you should feel no resistance from the synchros when moving the stick into the lower gear.

As mentioned, it's not really needed since we have synchros, save for downshifting into 1st. I guess it is a neat skill to have and people here tend to like to brag that they know how to do it.

As Mike mentioned there is a thread every 3 days on double clutching. If you go to any other [non-WRX related] forum there is a thread maybe every 3 months. You would think we were all driving big rigs or something.
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Old 05-01-2004, 04:04 PM   #14
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Quote:
Originally posted by Slowpoke
As Mike mentioned there is a thread every 3 days on double clutching. If you go to any other [non-WRX related] forum there is a thread maybe every 3 months. You would think we were all driving big rigs or something.
Yeah but everyone else can shift in the cold without double clutching. Some people think I suck at driving because half the time I dont feel like double clutching and so then my shift isn't very smooth. In reality I'm just too lazy to do it when I'm driving certain people to lunch!
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Old 05-01-2004, 10:55 PM   #15
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Quote:
Originally posted by Slowpoke
If you go to any other [non-WRX related] forum there is a thread maybe every 3 months. You would think we were all driving big rigs or something.
Most other cars have better synchros. I'm used to subies and don't really mind, but have to admit it's absurd to have to double-clutch even upshifts when the tranny is cold.

PS Big-rig drivers don't use the clutch at all (but thats another topic that keeps coming up once in a while ...)
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Old 05-02-2004, 01:33 AM   #16
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Quote:
Time to drive like a grandpa...let syncros do work...
Shouldn't you say Time to NOT drive like a grandpa and let the syncros do the work.

after all it is pretty much only the grandpa's or those of a similar age who used to have to drive that way.
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Old 05-02-2004, 02:00 AM   #17
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I think its worth mentioning that while driving to the store double clutching/heel toe and other techniques are not nessecary. HOWEVER on the auto-x course they are extremely helpful and somestimes damn near necessary. The thing is, its kinda hard to practice these methods when you only get 4 runs each lasting around a minute. SO, i like to heel toe and double clutch everywhere i go. Yeah, i don't need to, but the next time i do need to, the practice will have helped...

I think this is a big part of why many drivers do it all the time










and it makes us feel cool
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Old 05-02-2004, 06:06 AM   #18
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Quote:
Originally posted by Slowpoke
You would think we were all driving big rigs or something.
My WRX isnt a big rig?...

Quote:
Originally posted by powerlabs
I guess I just don't get it Didn't subaru specifically put synchronizers on our gear boxes so we wouldn't have to drive like we had a 1960s mustang???
werd
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