Hey guys,

I'm a proud new owner of a 6MT with the SyncroRev Matching feature, but I've long been a manual transmission driver. While the new rev matching is amazing and fabulous, I still want to do what's best and 'easiest' on my car the majority of the time. Given that I can double clutch and heel-toe downshift, what is truly the best way to maintain the car's longevity in the drivetrain....using syncrorev matching or the traditional double-clutch?

My thought is that double-clutching is better IF you can do it correctly as syncrorev matching really is just single-clutching with rev matching. However, if one can't rev match correctly (a tough thing to nail on the head every time you downshift), perhaps syncrorev matching is better as you get a smoother downshift and avoid engine-transmission speed variations that arise with poor double-clutching.

What are your thoughts? I'd love to hear from some expert/advanced drivers using MTs.

Thanks,

Alex

 

You don't need to "double-clutch". Just pressing the clutch once is enough while rev-matching.

 

double clutch... let me guess, you are either 21, or 50+.

 

28 and studied engineering back in the day so I find these nuances interesting. While these cars have synchros that negate the need to double-clutch, the synchros potentially benefit in longevity from the help of double-clutching. I understand how to use synchrorev-matching as I own the car. However, I'm interested in the purist view of which is better. On another forum, one member has already suggested double-clutching is possible with synchrorev matching enabled, but requires an extra bit of finesse. This way you get perfect RPM matching AND you take the work off the synchromesh.

Again, my point here is to get a more expert opinion on the value of double-clutching vs just synchrorev-matching alone. If you can do both, it's win-win.

 

Double-clutching. You are my hero.

 

Granny shifting not double clutching like ya should...

Everyone ready for some Fast and Furious LULZ.

 

Triple-clutch! Very nice.

 

Another thing to consider is that when double clutching you are working the clutch release bearing twice as much and therefore run the risk of wearing it out prematurely. Although I still double clutch for smooth downshifts

I do like the debate on single vs double clutching. I learnt to double clutch when I was a young lad in the British Army (1986), so my views are probably dated. However, my understanding is that the purpose of rev syncing (or heel & toe) is to match the engine and g/box speeds for a smoother downshift. During single clutching you rev when the clutch is depressed, how therefore can you match the engine and g/speeds as they are not connected. One the other hand, when you double clutch you rev when the clutch is engaged and therefore marry up the engine and g/box speeds.

I hope an EXPERT can enlighten us all

 

IMO, there's no need for double-clutching since the car comes with synchros. You are just doing more work than what it's worth to squeeze more life out of your synchros when you will replace them no matter what down the road. As for the synchrorev match, you can either choose to use it or use heel-to-toe downshifts. Again, if you have the synchrorev match on, then let the computer do all the work. If you have it off, you do the work. You're trying to do more work than is necessary when engineers designed the car to take care of that *cough* (synchros & syncrhorev match)

 

lol

 

Wow...

 

This video clip shows the driver doing heel & toe with both single and double clutching. I know which is easier, but which is best!!!!

http://www.youtube.com/watch?v=IuoZe...eature=related

 

Double clutching is an out-dated practice that has no benefit on modern vehicles. and dalecan.... tell me why on earth double clutching would sync the gearbox with the crank speed? because you push in the clutch one more time??? go home.

 

Firstly, what do you mean go home!!!!

Second, during double clutching 'it is my understanding' that when the car is in neutral and the clutch pedal is released the gearbox transmission shaft is engaged in the spigot bearing of the flywheel. Thus when you rev, the engine and gearbox speeds are married.

As I said in earlier posts, I don't know if this is correct and I was hoping for an expert opinion. Which yours obviously is not!

If it's an out-of-date practice then why do some professional drivers still do it?

 

heel toe and double clutch heel toe are two different techniques.

I think it is sufficiently clear from any article I have ever read on the subject (because it comes up at least once a year) that double clutching is not necessary anymore, or gives any benefit.

and OP: you are not in the right demographic to be posting this thread. it is not statistically correct... I think you are lying to me about your age. thought the eng degree does explain a bit...

 

lol this reminds me of fast and furious,


"your not double clutching, GRANNY shifting like your suppose to" !!!! ahaha

omg

 

I think the quote is really this.

"Granny shiftin' not double clutchin' like you should"

Source:
http://www.imdb.com/title/tt0232500/quotes

 

I always double clutch while shifting, and always pump the brakes during emergency stops to keep them from locking, and I always always signal with my hands so other drivers can clearly anticipate my lane changes!


owned by advancing technology....

 

Double clutching hasn't been necessary since fully synchronized transmissions have been in existence... Unfortunately, it doesn't mean the tribal knowledge about it's necessity isn't still prevalent.

 

Like already stated, SyncroRev Matching is comparable to heel toe downshifting, not double clutching (which is useless in modern transmissions) lawlz. Go buy an old Ferrari or something if you want to double clutch.