Not using cluth in 6mt
04-20-2008, 08:20 PM
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Not using cluth in 6mt
What do you guys think? Is it bad not using the clutch to shift into gears. I have been using this technique for months and its much smoother than using the clutch. I know most semi truck drivers use this method. What do you guys think?
04-20-2008, 08:24 PM
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Its REALLLLLL easy... It does not require skills at all. Its so MUCH smoother than using the clutch.
Im asking if it hurts the tranny because i read this in another forum.
"From what I understand, doing that can damage the syncrose(sp) in the tranny even if they are done properly. And there is no set rpm... it depends on the speed of the car, the gear to and from, and then the rpms. So it is always diffrent.
I do not recommend doing it. Your clutch will last longer driving it properly, then your tranny will by doing that."
Im asking if it hurts the tranny because i read this in another forum.
"From what I understand, doing that can damage the syncrose(sp) in the tranny even if they are done properly. And there is no set rpm... it depends on the speed of the car, the gear to and from, and then the rpms. So it is always diffrent.
I do not recommend doing it. Your clutch will last longer driving it properly, then your tranny will by doing that."
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04-20-2008, 08:26 PM
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Originally Posted by rx7/350z
LOL! I have a spare tranny for sale, call me when you need it.
If its that bad for the tranny, than why is it so smooth?
Why do truck drivers use this technique?
I pretty much shift at 3500 RPM through every gear without the clutch. I have been doing it for 9 months and havent had a single problem.
In addition, there are some people replacing clutches and trannies in less than a year...
04-20-2008, 08:30 PM
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Big difference between tractor trailers and automobile transmissions... The big trucks don't have synchros. Also, there engine/drivetrain components are designed to last ~1000000 miles.
04-20-2008, 08:33 PM
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Originally Posted by mikez97
your telling all of us that pushing the clutch in is really that hard, and your trying to find ways around it.
its there for a reason.
its there for a reason.
I never stated that. I was just asking if its bad for the tranny. I guess its a debatable subject.
I also saw this on wiki.
"It is possible to shift gears without using the clutch at all, by careful throttle manipulation. When transmissions were unsynchronized this was usually the easiest method, and still works in modern cars, although it requires a lot more practice than the usual methods described above.
Although the technique works in synchronized gearboxes, it is inappropriate in nearly all circumstances. A synchronized gearbox has a small clutch called a synchronizer (or "synchro") in every forward gear which brings the input and output rotation to the same speed before allowing them to engage. Like the main clutch, these synchronizing clutches use friction. These synchronizing clutches will allow for a margin of error when engaging without the main clutch. If the engine speed is somewhat too high or too low, the synchro will essentially take on the job that the fully engaged main clutch isn't doing. However, a synchro ring is not intended to do the job of a main clutch. Its job is to spin up or spin down just the input part of the transmission that is assumed to be disconnected from the engine. It is not intended to speed up or slow down the entire engine. Such experimentation done on a regular basis will prematurely wear out the synchro rings, which will have to be replaced."
So im assuming if done properly its not bad; but if you dont shift in the appropriate RPM, it can prematurely wear out the synchros.
04-20-2008, 08:35 PM
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Originally Posted by Motero
Although the technique works in synchronized gearboxes, it is inappropriate in nearly all circumstances. A synchronized gearbox has a small clutch called a synchronizer (or "synchro") in every forward gear which brings the input and output rotation to the same speed before allowing them to engage. Like the main clutch, these synchronizing clutches use friction. These synchronizing clutches will allow for a margin of error when engaging without the main clutch. If the engine speed is somewhat too high or too low, the synchro will essentially take on the job that the fully engaged main clutch isn't doing. However, a synchro ring is not intended to do the job of a main clutch. Its job is to spin up or spin down just the input part of the transmission that is assumed to be disconnected from the engine. It is not intended to speed up or slow down the entire engine. Such experimentation done on a regular basis will prematurely wear out the synchro rings, which will have to be replaced."
Threads like this still amaze me daily.
04-20-2008, 08:35 PM
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Originally Posted by HDPD350Z
Big difference between tractor trailers and automobile transmissions... The big trucks don't have synchros. Also, there engine/drivetrain components are designed to last ~1000000 miles.
04-20-2008, 08:40 PM
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Originally Posted by 13ringinheat
Do a service for all z owners Please post your real info so no one on this site ever buys that car from you. If you do that to your tranny i shudder to think what you try out on the rest of the car.
04-20-2008, 08:41 PM
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Originally Posted by Motero
Motorcycle drivers also dont use their clutches, is it because they dont have synchros?
We aren't discussing motorcycles.
Shifting without engaging your clutch WILL cause undue wear on your transmission (no matter how smooth you think it feels).
So continue patting yourself on the back, but consider this... Is replacing a clutch/flywheel cheaper than a tranny rebuild?