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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Tracking, Autocrossing, Dragstrip, Driving Techniques > Official Learn To Drive Manual Cars Thread



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      06-25-2008, 01:34 PM   #309
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Quote:
Originally Posted by i2iSTUDIOS View Post
so it's a completely free mod? Nice! What does the CDV actually do to the clutch? Make it springier? Why did BMW even put it in?
http://www.zeckhausen.com/CDV.htm
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      06-25-2008, 01:44 PM   #310
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Originally Posted by ///Mantis View Post
Oh, the part about bleeding the line is going to be the hard part... I don't have too many assistants in my area.
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      06-25-2008, 01:47 PM   #311
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u might not need to bleed. that's where my knowledge about it gets blurry hahah
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      06-26-2008, 11:16 AM   #312
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Revisiting thread after a couple of months driving my 335i, my first MT. Process is generally going fine and MT is definitely becoming more second nature. Two questions/minor issues.

First, I encounter two very steep hills during my daily drive: one at the top of my street, where I need to pull out into traffic (have to stop at the top of the incline, check for traffic, then pull out) and a second when I pull out of my parking garage downtown seattle, which is dead center in one of the steepest hills downtown. I've got to rev the engine fairly high on these inclines to prevent a stall (still stalling it probably once a week on these hills) and I have concerns about premature clutch wear. My guess is that there's nothing I can really do other than just trying to perfect the amount of gas to give it to minimize the issue.

Second, still having issues with downshifting. Try to blip the gas during the downshift but still get a noticeable jerk most times I'm downshifting for fun (to get more torque) rather than low RPMs. Exactly how much of a blip should I be giving this thing?
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      06-26-2008, 11:43 AM   #313
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Quote:
Originally Posted by magillagorilla View Post
Revisiting thread after a couple of months driving my 335i, my first MT. Process is generally going fine and MT is definitely becoming more second nature. Two questions/minor issues.

First, I encounter two very steep hills during my daily drive: one at the top of my street, where I need to pull out into traffic (have to stop at the top of the incline, check for traffic, then pull out) and a second when I pull out of my parking garage downtown seattle, which is dead center in one of the steepest hills downtown. I've got to rev the engine fairly high on these inclines to prevent a stall (still stalling it probably once a week on these hills) and I have concerns about premature clutch wear. My guess is that there's nothing I can really do other than just trying to perfect the amount of gas to give it to minimize the issue.

Second, still having issues with downshifting. Try to blip the gas during the downshift but still get a noticeable jerk most times I'm downshifting for fun (to get more torque) rather than low RPMs. Exactly how much of a blip should I be giving this thing?
try the hill-assist that BMW has, it'll save u some of that wear on the hills. the way to activate is apply brakes and clutch at the same time and it'll activate. on hills u need more gas than normal and need to give the clutch more work in first gear too. just the nature of it. as long as u dont ride the clutch constantly on hills dont worry about premature wear too much.

im not sure about 335. for my car when i blip the gas i hit the pedal to the floor most of the time. be generous with the blip
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      07-10-2008, 10:25 PM   #314
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Quote:
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im not sure about 335. for my car when i blip the gas i hit the pedal to the floor most of the time. be generous with the blip
blip a little, maybe ~1-1.5" depression. If you do a heel-toe downshift, you'll be limited on how much you can roll your foot any way.

If the pedal reached the floor on a 335i, you'd grossly over-rev.
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      09-03-2008, 12:20 AM   #315
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Just bringing this thread back to life a little with a video showing a racer doing double-clutch heel&toe shifting. Obviously from the sound of the transmission, it has straight cut gears and no synchros....



Here's another, but it is not as clear with regards to the view of the feet on the double clutching....

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      09-04-2008, 06:06 PM   #316
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When changing gears, do u HAVE to depress the clutch all the way or can u just depress it enough to switch gears without grinding and whatnot. I ususally depress the clutch all the way for first and second since it seems like a smoother shift but from third and on i sometimes dont press it all the way. Is this ok or should I depress the clutch all the way for every gear?
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      09-04-2008, 06:16 PM   #317
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i was taught to depress all the way, however people go for a "clutch stop" which is a block that prevents u from depressing all the way. i'd like to hear some thoughts too.

what's teh advantage of not pressing all the way? saving time? lol
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      09-11-2008, 07:22 AM   #318
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Do you guys know of any videos showing launches and other shifts in a 335? I've seen the M3 driving school ones but it would help me to see the shifts in my car.
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      09-20-2008, 08:50 AM   #319
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Dead?
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      09-20-2008, 11:00 AM   #320
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I'd search YouTube. but shifts are shifts in any car. difference is in ur car u can launch at lower rpm than m3
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      09-27-2008, 02:51 PM   #321
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I'm not sure if this is bad for good
enlighten us nabil
Clutch-less shifting
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      09-27-2008, 04:23 PM   #322
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Quote:
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I'm not sure if this is bad for good
enlighten us nabil
Clutch-less shifting
Ok, why the hell is this guy's face painted white? The guy sounds stoned too. I don't actually believe he is shifting without the clutch either. His left left sure seems to move around quite a bit for just being on the dead pedal...

As for shifting without using the clutch? No thanks. It really should read "clueless shifting." Can it be done? Yes, it certainly can. But you have to get it just right. Not getting it "just right" means grinding gears and synchros. I'd rather replace a worn cluth plate than replace the gears in the transmission.
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      09-27-2008, 04:51 PM   #323
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Ok, why the hell is this guy's face painted white? The guy sounds stoned too. I don't actually believe he is shifting without the clutch either. His left left sure seems to move around quite a bit for just being on the dead pedal...

As for shifting without using the clutch? No thanks. It really should read "clueless shifting." Can it be done? Yes, it certainly can. But you have to get it just right. Not getting it "just right" means grinding gears and synchros. I'd rather replace a worn cluth plate than replace the gears in the transmission.
yeah me too
I have no idea why his face was painted
jabbawockee?

but the clutch is much cheaper to replace than the tranny
I agree
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      12-31-2008, 02:01 PM   #324
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On a steep incline, I usually use the handbrake. The e90 have hill assist and therefore I use the handbrake rarely if ever. If incline is very steep, even the hill assist may find the car move back a little. Never balance clutch and throttle, that's a clutch killer.

If using handbrake: 1stgear/declutch/apply gas and as soon as you feel the car's rear squat, release handbrake while applying more gas. You will have tendency to release clutch fast, don't give in to that temptation or you would stall car. So clutch release same, just more gas than usual. If done properly, car would not move backwards an iota even on steepest incline.....
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      12-31-2008, 04:58 PM   #325
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in certain cases clutchless shifts are better than clutching. the really "necessary" example that i can think of is 18 wheelers and big trucks. when you learn they teach you to never use the clutch. in terms of cars yah it's doable, margin of error is probably bigger and the damage risk sounds higher
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      12-31-2008, 06:04 PM   #326
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      01-01-2009, 12:13 AM   #327
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geart thread haha i used to practice techniques on my dads civic so i would kill my transmision with mistakes.
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      01-20-2009, 01:43 PM   #328
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Quote:
Originally Posted by ///Mantis View Post
Learn to drive MT video:

http://www.ehow.com/how_3234_drive-car-with.html

but yah, nothing will teach you better than sitting in the car and doing it
OKAY.. first of all.. not to be sexist or anything.. why is a FEMALE trying to teach people how to drive manual transmission while wearing heels? But, good idea using a beater car! Look at the gas pedal its missing the rubber housing and shits rotted.

Second.. at 1:51 of the video, STEP 11, she has already shifted from 1st to 2nd gear, then talks about pressing the clutch while simultaneously pressing the gas at the same time... EXCEPT in the video shes simultaneously pressing the BRAKE.. LOL.. hilarious!

No wonder why we have so many F'Kd up drivers out there.. tsk tsk..

Last edited by dubiousONE; 01-23-2009 at 02:47 PM.
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      01-20-2009, 02:15 PM   #329
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OKAY.. first of all.. not to be sexist or anything.. why is a FEMALE trying to teach people how to drive manual transmission while wearing heels? But, good idea using a beater car! Look at the gas pedal its missing the rubber housing and shits rotted.

Second.. at 1:51 of the video, STEP 11, she has already shifted from 1st to 2nd gear, then talks about pressing the clutch while simultaneously pressing the gas at the same time... ACCEPT in the video shes simultaneously pressing the BRAKE.. LOL.. hilarious!

No wonder why we have so many F'Kd up drivers out there.. tsk tsk..
Holy cow, I just looked at the video after reading your post. You're right, that's hilarious -- what a horrible "how to" video! Hopefully nobody takes it seriously.

I think that web site just lets people send in their own "how to" videos, and they host them. If I recall correctly, a while ago there was a "how to polish your car" video on there that was mercilessly made fun of over at autopia.org. I think this "how to drive a manual transmission" video is just as bad or worse!
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      01-21-2009, 05:39 PM   #330
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position of your foot on clutch

Hello,

Relative MT newbie here.

Where does everyone position your foot on the clutch pedal to get the best feel for engagement point? I tried putting entire foot on the clutch pedal, but i don't get as good of a release as oppose to putting the balls of my foot on the clutch pedal.

Thanks
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