| What this site
is about
The primary goal of this site is to teach people how to
launch and shift the M5 without endangering the clutch. Although this
has been written about extensively on the board, I felt some people may
benefit more from hearing and seeing the proper technique. Because
there have been many questions on related topics, it also covers some
more advanced techniques, such as heel-and-toe and double-clutching.
The M5's engine produces gobs of torque. A clutch is
designed to transfer a small amount of torque while slipping,
and a large amount when it is not. Asking the clutch to
transfer the engine's full power while it is still slipping produces a
lot of heat in a hurry. This heat will quickly destroy a clutch. Proper
launch and shift technique requires you, the driver to
ensure the clutch is fully engaged, or "hooked up" before your
right foot commands the engine to produce significant power. Taking
your foot all the way off the clutch pedal does not mean the clutch is
hooked up! (However if you shift properly, the clutch should get
fully hooked up before you let the pedal all the way up!)
Treated properly, the M5 clutch will last a long time.
One of the bmwm5.com board's earliest member/owners has about 60,000
miles on his original clutch, which is still going strong. He also
drives his car on the track frequently. The car is not babied. Other
members ruined clutches in as little as 5000 miles. What is the
difference? Technique!
A
word about me
So what qualifies me to talk about this? Truth is, I'm
just an average guy who likes cars. I was a professional mechanic when
I was going through school. My first car was a '63 VW Bug that had worn
synchros and a clutch cable that broke frequently. I learned techniques
such as clutchless shifting and double-clutching in that car. Since
then I've been a student of physics and performance driving, having
attended several high performance driving classes. I am not, however, a
BMW representative, a race driver, or a self-proclaimed expert. Watch
these videos. They're free. If you agree with me, great. If you
disagree, that's OK too. What have you got to lose?
A
word about the videos
First, and most important, when you view these videos,
please download and save them to your computer first. (PC users should
"right-click" the video link and choose "save as" from the menu that
pops up.) This minimizes the load on the internet and the server where
these videos are hosted. Second, the videos were produced at fairly
high video resolution and very high (CD quality) audio resolution.
Hearing the way a launch or shift is supposed to sound is the
most important element of these videos. Finally, the videos were
recorded in stereo. One microphone was placed in the cassette slot to
capture my voice clearly. The other was placed under the right front
floor mat to capture mostly engine sound. You can and should watch the
videos multiple times, and use your computer's (or media player
software's) "balance" control to focus on, or tune out my voice.
The
Instructional Videos
IMPORTANT:
PLEASE GO HERE
for all videos.
|
| 13. |
Putting it all together, part 2 - A quick trip with
launch, up- and downshifts while pushing hard. Includes a demonstration
of power-on oversteer, and the ease with which the M5 can be gathered
back up, even with DSC off. Hint: watch it a second time and watch
the keys for an indication of G forces..... |
Putting It All Together, Part 2 (7.5Mb) |
| This
page and these videos are Copyright © Greg Heumann, 2001, 2002,
2003, 2004
Rev 1.0 - November 9, 2001
Rev 1.01 - March 6, 2003 - Move to host videos at BMWM5.com
Rev 1.02 - November 2003 - Minor updates
Rev 1.03 - May 2004 - hosting server move
Rev 1.04 August 2004 - hosting server changed URLS out from under me.
Dropped "Bonus Videos" entirely.
|