Manual Driving Question

[geep81]

So does that mean with rev match turned on the granny shift technique were you only give gas once the clutch is 100% disengaged be correct since the car does it for you ? Or should I still do it

The rev match feature doesn't affect getting going from a stop at all, or up shifting. The rev match option in your car only affects downshifts.

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[AnthonyA1234]

The rev match feature doesn't affect getting going from a stop at all, or up shifting. The rev match option in your car only affects downshifts.

Yea that’s what I always thought as well but others are saying it does

 

[geep81]

Yea that’s what I always thought as well but others are saying it does

Well that is wrong. Turn off the feature yourself and try to get going and you will see it behaves the same.

But then when you go to down shift if you don't blip the throttle yourself it's gonna not be a smooth shift.

 

[AnthonyA1234]

Well that is wrong. Turn off the feature yourself and try to get going and you will see it behaves the same.

But then when you go to down shift if you don't blip the throttle yourself it's gonna not be a smooth shift.

Ok so then I should be giving gas on up shifts then?

 

[Jhalil101]

Ok so then I should be giving gas on up shifts then?

If you’re upshifting slow once you engage the clutch the motor will begin to rev down but the car will keep the motor from falling back down to idle and will hold the rpm where it needs to be at when you go into the next gear. This allows you to shift smoothly with no throttle input. If you’re trying to shift quickly (not talking crazy wot pulls) you will need to begin to disengage the clutch and let it pull down the engine rpm to counter the rev hang (don’t apply any throttle). Toward the end of the release is when I add a touch of gas to slow the rate of how fast the the rpms are falling and prevent the jerk from the clutch biting. It seem super complicated but in practice once you get it it’ll become second nature.

I hope this makes sense lol.

 

[AnthonyA1234]

If you’re upshifting slow once you engage the clutch the motor will begin to rev down but the car will keep the motor from falling back down to idle and will hold the rpm where it needs to be at when you go into the next gear. This allows you to shift smoothly with no throttle input. If you’re trying to shift quickly (not talking crazy wot pulls) you will need to begin to disengage the clutch and let it pull down the engine rpm to counter the rev hang (don’t apply any throttle). Toward the end of the release is when I add a touch of gas to slow the rate of how fast the the rpms are falling and prevent the jerk from the clutch biting. It seem super complicated but in practice once you get it it’ll become second nature.

I hope this makes sense lol.

So you give gas when the clutch reaches the bite point?

 

[Jhalil101]

So you give gas when the clutch reaches the bite point?

When shifting quick, yes.

 

[Dfeeds]

In motion has been fine for me as a newer driver to stick, it's still the getting going from a stop I am not 100% smooth or comfortable with.

I do what OP said he does I think and let off the clutch 100% before applying throttle from a dead stop. I know I could get this down a lot better, but have been trying to learn slowly so I don't wear things out faster than normal. Did not have anyone to teach me/show me the basics of stick before I bought mine.

I also vote for the Steeda spring, I did that and found it helped a lot. The extra force isn't that much, you notice it at first but it's soon normal.

That only works because the computer auto revs the engine from a stop. More torque + short gearing can also get away with this but it's not the ideal technique if you want a smooth shift. Depending on the vehicle, you could also stall the car outright.

Without the assist you'd basically depress the clutch normally. Once you felt the clutch grab, and the car start to move, you would start to give it throttle while continuing to depress the clutch. This grab is hard to feel with the hydraulic clutch and stock assist spring.

Once you get used to the point and commit it to muscle memory you become faster and smoother. This is also the trick to smooth shifts when shifting fast at redline. You just do things a lot faster.

 

[SplawnDarts]

I’m confused I thought rev match was only used with down shifting?

No, on upshifts you will see RPM fall to the target RPM and hold there if rev matching is engaged.

If you give it gas before letting the clutch out, the engine RPM will rise above the target RPM, and the car will lurch and/or you'll chirp the tires unless you slip the clutch to match the engine to the road speed.

 

[SplawnDarts]

Yea that’s what I always thought as well but others are saying it does

It 100% does affect upshifts.

Try this experiment when no one is around so you can see in slow motion how it works. Get going in say 2nd gear at about 30 MPH and then go to 0% throttle and depress the clutch 100%, shift the transmission to 3rd, but do NOT let the clutch out or give it any throttle. Just roll down the road with the transmission in geat and the clutch in. The engine RPMs will drop, but they will not drop to idle like they would on an old school car. They will drop to the point where the car is rev-matched to go into third. If you wait long enough (many seconds?) they may then drop to idle. I'm not sure because I've never tried that.

 

[geep81]

Once you felt the clutch grab, and the car start to move, you would start to give it throttle while continuing to depress the clutch.

I guess this is always the part that scares me off because I don't want to slip the clutch. But I am gonna start practicing what you said more, thanks. I know the clutch is designed to be slipped a bit, but with no real experience beforehand it's tough to judge how much I need to let that happen. Thanks.

 

[jwt]

I would also suggest not swapping backwards and forwards between drive modes while learning the car, the various drive modes alter the throttle response significantly. I know if I have been driving in normal mode for a while and switch to sport my first few minutes of changes are poor until the mind muscle memory thing happens. It gets easier and faster the longer you have been driving but even as an experienced driver with 30+ years of manual driving (only drove manuals in the last 7 years of my life) I can feel the difference in my smoothness of gear changes when switching modes

 

[SplawnDarts]

If you want to pull out at a reasonable speed (analogous to what an auto being driven moderately does) you need to slip the clutch a fair bit. If you watch on an auto with a tac, the torque converter slips a ton getting it going, and that's where all the low end torque comes from. Our cars have beefier engines that most, but the same principle still applies just with a clutch instead of a TC.

To start from a stop, I generally depress the gas enough to quickly rev to about 3k, then start letting the clutch out. As the clutch starts to bite I slow down letting it out, and as I do that I give enough gas so that the revs never fall below 1.5k to 2k. The rate I let the clutch out is what modulates how I take off so I don't spin the tires. When I feel the clutch lock up, I let off it all the way.

I've found the GT does not like low RPM launches unless you let the clutch out VERY slow (like in a parking lot). There you can do it and the ECU will give you a bit of gas to prevent a stall. But at an intersection starting with no throttle is way too slow.

 

[Dfeeds]

It's the rev hang, you cannot fast shift smoothly in a modern car.

Maybe you can't...

I guess this is always the part that scares me off because I don't want to slip the clutch. But I am gonna start practicing what you said more, thanks. I know the clutch is designed to be slipped a bit, but with no real experience beforehand it's tough to judge how much I need to let that happen. Thanks.

When you're starting off slow in first your car does it for you. A good first step would be to really start paying attention to where the clutch is, and the feeling it has on your foot, at the very moment the car starts to roll. Just remember that you only need a little bit of throttle. You don't want to give it more throttle until after the clutch is fully depressed or you can burn the clutch.

Once you get it down, good practice is actually starting on a steep incline without the hill assist or relying on the E brake. It'll get you used to being a lot quicker.

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