Advice needed - new manual driver with abrupt/grabby clutch

[Reverence]

If you pause long enough at the upper part of friction point without moving your throttle position, and on a flat ground, your clutch will eventually become fully engaged in its course to holy matrimony.

[zaf]

If you pause long enough at the upper part of friction point without moving your throttle position, and on a flat ground, your clutch will eventually become fully engaged in its course to holy matrimony.

ok, let's say it is fully engaged at the upper part of friction point, and it makes no sense if we add gas at this moment before we fully release the clutch, right?

[Reverence]

ok, let's say it is fully engaged at the upper part of friction point, and it makes no sense if we add gas at this moment before we fully release the clutch, right?

it makes sense to add a little gas just before full engagement of clutch (as it begins to grab), so that you don't get engine brake at full engagement. This is what see saw'ing is about.

[Rope-Pusher]

You should always add gas, a little at a time, before you are fully engaged, or she will be asking you "What's that horrible smell?" for the rest of your life.

[theholycow]

If you pause long enough at the upper part of friction point without moving your throttle position, and on a flat ground, your clutch will eventually become fully engaged in its course to holy matrimony.

ok, let's say it is fully engaged at the upper part of friction point, and it makes no sense if we add gas at this moment before we fully release the clutch, right?

It really depends on the situation. However, if you had to wait a while for the clutch to sync up, adding significant gas without letting your foot off the clutch pedal more will result in the clutch slipping again since it has just barely enough holding power at that position for the previous amount of torque the engine was producing.

Have you seen this?
http://www.howstuffworks.com/clutch.htm
On pages two and three are interactive demos that can help understand the clutch better.

[zaf]

If you pause long enough at the upper part of friction point without moving your throttle position, and on a flat ground, your clutch will eventually become fully engaged in its course to holy matrimony.

ok, let's say it is fully engaged at the upper part of friction point, and it makes no sense if we add gas at this moment before we fully release the clutch, right?

It really depends on the situation. However, if you had to wait a while for the clutch to sync up, adding significant gas without letting your foot off the clutch pedal more will result in the clutch slipping again since it has just barely enough holding power at that position for the previous amount of torque the engine was producing.

Have you seen this?
http://www.howstuffworks.com/clutch.htm
On pages two and three are interactive demos that can help understand the clutch better.

So the amount of gas I need to add is not constant, should depend on the position of the clutch, right?

I think I have rev hang in my car, so do I suppose to add gas later than normally when it should?

[LHOswald]

I think I have rev hang in my car, so do I suppose to add gas later than normally when it should?

most likely, yes, but like THC said (and its true of almost everything while driving manual) it depends on your circumstances. there are a thousand different combinations for each of launching, upshifting and downshifting. when someone says on here you should do x when y happens, almost every single time x and y are completely different than another situation. we dont know your circumstances you just kinda have to figure it out on your own.

[zaf]

I think I have rev hang in my car, so do I suppose to add gas later than normally when it should?

most likely, yes, but like THC said (and its true of almost everything while driving manual) it depends on your circumstances. there are a thousand different combinations for each of launching, upshifting and downshifting. when someone says on here you should do x when y happens, almost every single time x and y are completely different than another situation. we dont know your circumstances you just kinda have to figure it out on your own.

Thanks for your reply.

I got to practice more

[Reverence]

You should always add gas, a little at a time, before you are fully engaged, or she will be asking you "What's that horrible smell?" for the rest of your life.

If female drivers started adding gas, a little at a time, before they were fully engaged, that would put me off for the rest of my life.

[theholycow]

So the amount of gas I need to add is not constant, should depend on the position of the clutch, right?

I think I have rev hang in my car, so do I suppose to add gas later than normally when it should?

Very few things in manual transmission driving are constant...everything depends on everything else. We can give you advice for how to adjust based on what you feel, but we can't tell you what you need ahead of time.

Rev hang may indeed mean you have to add gas later.

What car do you drive?

[zaf]

So the amount of gas I need to add is not constant, should depend on the position of the clutch, right?

I think I have rev hang in my car, so do I suppose to add gas later than normally when it should?

Very few things in manual transmission driving are constant...everything depends on everything else. We can give you advice for how to adjust based on what you feel, but we can't tell you what you need ahead of time.

Rev hang may indeed mean you have to add gas later.

What car do you drive?

It is a 2002 hyundai elantra gls

It is even weird that I have more chance to have a jerky motion in 3-4 than 2-3, and I am sure the rpm is higher than what is needed in either case.

[RITmusic2k]

If your rpms are higher than needed, then you'll definitely feel a jerk - the only way to eliminate a jerk is for the engine revs to be matched or very close to the transmission speed before you even begin to release the clutch. If for a certain gear and vehicle speed the engine needs to turn at 2,000rpms, then being at 2,500rpms will feel about exactly as jerky as being at 1,500rpms (but it'll be in the opposite direction). Releasing the clutch more slowly will ease the jerkiness, but the only way to be very smooth is to get the engine closer to the target speed; once you've done that you can release the clutch pedal as quickly as you can and the car still wouldn't jerk.

[zaf]

If your rpms are higher than needed, then you'll definitely feel a jerk - the only way to eliminate a jerk is for the engine revs to be matched or very close to the transmission speed before you even begin to release the clutch. If for a certain gear and vehicle speed the engine needs to turn at 2,000rpms, then being at 2,500rpms will feel about exactly as jerky as being at 1,500rpms (but it'll be in the opposite direction). Releasing the clutch more slowly will ease the jerkiness, but the only way to be very smooth is to get the engine closer to the target speed; once you've done that you can release the clutch pedal as quickly as you can and the car still wouldn't jerk.

I know that, but the rpm drops slowly, I do not to wait

[theholycow]

the rpm drops slowly, I do not to wait

The only options you have left are to let the clutch out slowly or accept shift shock. With slow-dropping RPM the only way to finish your shift quickly and resume accelerating quickly is to accept shift shock.

[zaf]

the rpm drops slowly, I do not to wait

The only options you have left are to let the clutch out slowly or accept shift shock. With slow-dropping RPM the only way to finish your shift quickly and resume accelerating quickly is to accept shift shock.

Dose this kind of rev hang happen individually or will all hyundai elantra of that model have that?