Ok, I think this is awesome, but is everyone's car the same?
I have a 330 6 spd sport. I noticed that when I engage the clutch from a start that I need very little throttle to get the car going. So little in fact, that I decided to experiment. On a flat surface from a stop, I released the clutch as I normaly would, but kept my foot entirely off the throttle. The car smoothly engaged and moved forward at 6 or 700 rpm.
My theory is that the DV and Valvetronic work to sense the load and change the timing to prevent the car from stalling under load. Remebering that the BMW web site claims that the engine has no throttle body, but is controlled by the valves, I think the car is programmed not to stall.
This is my first modern BMW, so maybe the previous generation could do this too, but I was amazed. Especially since the car idles around 6 or 700 rpm.
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| Reply » Clutch engagement (please confirm) |
I've stalled a couple of times but I might have been on an incline. I'm going to check this out tomorrow but I think you'd have to release the clutch "extra" slowly to prevent stalling. Is this actually in the owner's manual....I mean this feature?
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| Reply » Clutch engagement (please confirm) |
^No. not in the manual. I just noticed that the car launched very smoothly, no matter how little gas I gave it. Finally I decided to try it without my foot on the gas. Now that you mentioon it, I probably lifted my foot off the clutch a little slower than usual, because I figured it would stall and I wanted to see how far off the floor this happened. Still, it wasn't unusually slow, I'd say about a full second from the start of the lift to engagement.
I have stalled my car once, on an incline, with five guys in it.
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| Reply » Clutch engagement (please confirm) |
Didnt the brake holding feature help you when on an incline?
How well does it work really?
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| Reply » Clutch engagement (please confirm) |
You can do this on any manual. It's called the no gas method. In this case the clutch delay valve is your friend and makes it easier. Managing the CDV, brake hold, and engine electronics is by timing your footwork.
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| Reply » Clutch engagement (please confirm) |
I've been able to start without using the gas in almost every car I've driven. The only car I couldn't figure out was the RX-8. I only tried a few times on a test drive, but I stalled every time. I think it has to do with the extreme lack of torque in those cars, you don't get any torque until close to 6000 rpm, and even then it's not that much.
I've never had a problem doing this in any BMW. To me, it's very easy to find the engagement point in these cars.
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Clutch engagement (please confirm)