car talk says double clutching is bad?

[WlknGenius]

Well, you've sure got ME pinned.

I'm that good.

[Wh33lhop]

Why would I try to engage first gear at 25mph? Because I hate my transmission and motor? Whatever point you're trying to make is lost on this one.

First gear turns, downshifting for a stop light and thinking you're awesome, etc.

[cagedbunny]

Go ahead, try and get into first going 25mph. It's possible and I'm sure it's cool listening to the synchro spool-up whine, but it gives you the distinct impression that you're doing something wrong, and it should, because you are.

Why would I try to engage first gear at 25mph? Because I hate my transmission and motor? Whatever point you're trying to make is lost on this one.

Bottom line is, double-clutching downshifts on an E30 is a waste of energy. If you want to do it because it makes you sleep better at night, then by all means, go for it. But there are a hundred parts on your 20 year old car that are going to wear out sooner than your synchros, assuming you're not some ham-fisted retard banging gears. And curbs.

[daniel]

out of context quote FTL.

he obviously meant you are upshifting during a drag race, and that double clutching would be pointless in that case. ;)

thanks :)

I'm not sure how double clutching is "smoother." If you're driving regularly doing shifts into gears that are next to each other there is nothing unsmooth about rev matching. it just takes an ounce more effort to move the gear lever. The actual motion of the car is still smooth.

the smoothness comes in the form of the actual gear lever sliding into a lower gear easily with no reaction from the car in any way. I don't like that ounce more of effort required to use the synchros to get into gear, so i double clutch. it doesn't take much longer to do than basic rev-matching, you just have to do a little dance with your left foot.

Context had nothing to do with it, I just interpreted it wrong.

Mah bad dawg.

no problemo.

[Wh33lhop]

There is no appeal. I'm assuming the people who do it are either too bored driving normally or think they are badass because they are doing some sort of hardcore driving technique.

Well, you've sure got ME pinned.

[WlknGenius]

I mean I've done it before. I have a basic understanding for the concept of how it all works. I just don't see the appeal... The ability to do it is nice, the understanding of how the car works is nice, the end result is essentially the same as a rev match though.

Although I've never double clutched really quickly, I personally just don't get the appeal of doing it every shift.

And my neighbor, I know him, I trust, him. I don't need to defend his knowledge to the internet. Maybe he just told me that exaggerated so that I wouldn't ruin my trans trying to get good at it and messing up.

There is no appeal. I'm assuming the people who do it are either too bored driving normally or think they are badass because they are doing some sort of hardcore driving technique.

Double-clutching is retarded in this day and age. And yeah, even drivers of large vehicles such as a firetruck will not even use the clutch after 1st or 2nd gear.

[Wh33lhop]

I mean I've done it before. I have a basic understanding for the concept of how it all works. I just don't see the appeal... The ability to do it is nice, the understanding of how the car works is nice, the end result is essentially the same as a rev match though.

Although I've never double clutched really quickly, I personally just don't get the appeal of doing it every shift.

And my neighbor, I know him, I trust, him. I don't need to defend his knowledge to the internet. Maybe he just told me that exaggerated so that I wouldn't ruin my trans trying to get good at it and messing up.

It's possible.

[87e30]

I mean I've done it before. I have a basic understanding for the concept of how it all works. I just don't see the appeal... The ability to do it is nice, the understanding of how the car works is nice, the end result is essentially the same as a rev match though.

Although I've never double clutched really quickly, I personally just don't get the appeal of doing it every shift.

And my neighbor, I know him, I trust, him. I don't need to defend his knowledge to the internet. Maybe he just told me that exaggerated so that I wouldn't ruin my trans trying to get good at it and messing up.

[Wh33lhop]

Interesting information about the TOB and the disc. However, I definitely think my neighbor knows what he's talking about.

There is a difference between saying it's unnecessary and saying it's BAD for the transmission. You can trust him, I don't care. I'm saying experience fixing cars and an intrinsic physical understanding of cause and effect do not necessarily go hand-in-hand. Plenty will argue otherwise but I've talked with plenty of techs who know what they're talking about, and more than a few who are tards.

Considering the amount of people on here saying that double clutching is stupid I'm going to have to stick with that side of the argument.

Why even do it? It's slower and involves more work.

Why not? Doesn't do any harm.

I'm not sure how double clutching is "smoother." If you're driving regularly doing shifts into gears that are next to each other there is nothing unsmooth about rev matching. it just takes an ounce more effort to move the gear lever. The actual motion of the car is still smooth.

Imagine perfect synchros, no resistance whatsoever going into gear. That's what a good double clutch does, and that's why it's satisfying.

I know I sound like a character in some stupid car movie, but it's pretty cool.

[Wh33lhop]

out of context quote FTL.

he obviously meant you are upshifting during a drag race, and that double clutching would be pointless in that case. ;)

Context had nothing to do with it, I just interpreted it wrong.

Mah bad dawg.

[87e30]

I'm not sure how double clutching is "smoother." If you're driving regularly doing shifts into gears that are next to each other there is nothing unsmooth about rev matching. it just takes an ounce more effort to move the gear lever. The actual motion of the car is still smooth.

[87e30]

My guess? He's got no idea what he's talking about. Lots of misinformation, even among techs.

But yeah, if you fuck up a double clutch you WILL grind, fortunately that is a very rare occurrence for me, but it does happen. Double clutching is more risky than regular rev matching.



Well, try rev matching into first and come back. ;)



The clutch "spring" you speak of is actually a disc, attached to the pressure plate. You replace it with the pressure plate every time you use the clutch, and no it doesn't really wear out in that way.

There's also usually a little spring on the clutch pedal, but that's a different matter.



That's because the throw-out bearing is used whenever the clutch is depressed. I don't think that's really applicable here.

Interesting information about the TOB and the disc. However, I definitely think my neighbor knows what he's talking about. Considering the amount of people on here saying that double clutching is stupid I'm going to have to stick with that side of the argument.

Why even do it? It's slower and involves more work.

[nando]

I hope you're joking.

out of context quote FTL.

he obviously meant you are upshifting during a drag race, and that double clutching would be pointless in that case. ;)

[nrubenstein]

I double clutch when my transmissions are very cold. There's no point in doing it at any other time.

[Wh33lhop]

Quoted for un-truth. Sure, some cars are more difficult than others to blip into first gear at a roll, but if you can't do it with your E30 via a simple rev-match, then you've probably already beat-up your transmission trying to learn the useless art of double-clutching a synchro'd tranny.

Go ahead, try and get into first going 25mph. It's possible and I'm sure it's cool listening to the synchro spool-up whine, but it gives you the distinct impression that you're doing something wrong, and it should, because you are.