rec.autos.simulators

Split axis/simultaneous brake-accel, part deux

Andrew Turne

Split axis/simultaneous brake-accel, part deux

by Andrew Turne » Thu, 25 May 2000 04:00:00

Well, I asked my boss. He has raced a little bit and went to Skip Barber
racing school.

Regarding using the brake and accelerator at the same time (according to
him)

If you have an automatic or semi-automatic (no clutch), you just don't
do it.

The time to do it is when the clutch is in and you need to keep the revs
high so you don't stall.

That's what he said, anyway. I don't think I'm going to be using a
clutch in simming anytime soon - I think this means I will be OK with
the Andretti wheel and pedals.. they seem to have the best
out-of-the-box pedals.... I also liked the fact that they are digital.

Boy, I wish I had a wheel already!!

Andrew

pez

Split axis/simultaneous brake-accel, part deux

by pez » Thu, 25 May 2000 04:00:00

check out....

http://www.speedvision.com/pub/articles/racing/09commentary/00052
4.html

and

http://www.autosport.com/article1.cfm?id=9730&ref=home&type=f

for the only time when your feet should be on the accelerator
(but not acelerating the car) and brake at the same time...

pez

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pez

Split axis/simultaneous brake-accel, part deux

by pez » Thu, 25 May 2000 04:00:00

Its called Heel and Toeing, getting the engine revs up before
changing down when braking and clutching between shifts.

Right foot moves from Accelerator to brake pedal, revs drop,
clutch goes in with left foot, toes from right foot drift across
the pedal to the accelerator to raise the revs before shifting
down whilst the heel still brakes. Toes come off accelerator as
soon as shift is complete.

never tried it myself, but if you want to drive quickly in real
life (on track anyway) you have to master it (cept in F1 where
semi autos abound.)

pez

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William Yowel

Split axis/simultaneous brake-accel, part deux

by William Yowel » Thu, 25 May 2000 04:00:00

Very good description, but when I used to do it, it was right toe on brake,
right heel over to kick the accelerator. Of course it would depend on the pedal
layout. Once I did it to double-clutch into non syncro-mesh first gear in an
MG-B, while moving, and the owner of the car said, "How'd you do that?" I had
sort of the cat-swallowed-a-canary feeling.
Bill Yowell

> Its called Heel and Toeing, getting the engine revs up before
> changing down when braking and clutching between shifts.

> Right foot moves from Accelerator to brake pedal, revs drop,
> clutch goes in with left foot, toes from right foot drift across
> the pedal to the accelerator to raise the revs before shifting
> down whilst the heel still brakes. Toes come off accelerator as
> soon as shift is complete.

> never tried it myself, but if you want to drive quickly in real
> life (on track anyway) you have to master it (cept in F1 where
> semi autos abound.)

> pez

> * Sent from RemarQ http://www.remarq.com The Internet's Discussion Network *
> The fastest and easiest way to search and participate in Usenet - Free!

GTX_SlotCa

Split axis/simultaneous brake-accel, part deux

by GTX_SlotCa » Thu, 25 May 2000 04:00:00

Hmmm.... I'm not sure I get the part about stalling, but anyway.  At least
in GPL and NFS:PU, I use the brake and gas to help me steer. In NFS:PU, with
some cars on some tracks and at higher speeds, I find that dragging the
brake with the gas  still pushed helps me keep the cars attitude right and
I'm more stable in the corners (sweepers). In GPL and to some extent in
SCGT, I know there are  times I've gone into a corer too hot and again
applying the brake and gas (and playing with them) is the only thing that
saves me. I can start to spin in GPL and then recover.  Something I couldn't
do before I used split axis and something that requires split axis to do. I
also sometimes exit a corner faster by squatting the car, I get on the gas
sooner but still slightly drag the brake for a short time. Since I was not
sold on the benefits of split axis before I started with GPL, I did a lot of
testing with and without it (basically to prove it wasn't necessary). I
won't say for sure that it decreases your lap times (probably does somewhat)
but it certainly makes it easier to drive and can get you out of trouble
occasionally. Just something to keep in mind. On the other hand, the
precision of the wheel could make you faster in GPL, even overcoming the
lack of split axis.

--

Slot
www.slottweak.com
Tweaks & Reviews


Andrew Turne

Split axis/simultaneous brake-accel, part deux

by Andrew Turne » Fri, 26 May 2000 04:00:00

Unless, of course, you're Soap-Box Derby Racing!!!!!!! Yeah!  Buddy!!!

Sorry, couldn't resist.
Andrew


> ..."When driving a race car, if you are not on the gas
> you better be on the brake.  There's no place for coasting."

Brett C. Camma

Split axis/simultaneous brake-accel, part deux

by Brett C. Camma » Fri, 26 May 2000 04:00:00

The bottom line is that much of the work in driving an automobile fast
is that of weight management.   Deceleration moves weight forward and
acceleration moves weight backwards.  Sometimes it is advantageous to
move weight forward by using the brakes for better front-end grip
while continuing to use the throttle to balance the car.  This sort of
thing is normally done to fine-tune to path of the vehicle through a
corner.

One observation I've heard and would be interested to hear others
thoughts about is "When driving a race car, if you are not on the gas
you better be on the brake.  There's no place for coasting."

Regards,
Brett C, Cammack
That's Racing! Motorsports
Pompano Beach, FL

Eldre

Split axis/simultaneous brake-accel, part deux

by Eldre » Fri, 26 May 2000 04:00:00


Sometimes I'm in a turn, a little too fast, but I don't want to hit the brakes
because I'll spin.  Or on a track where I'm not sure of the actual turn-in
because I can't SEE it...(silverstone).

Eldred
--
Tiger Stadium R.I.P. 1912-1999
Own Grand Prix Legends?  Goto  http://gpl.gamestats.com/vroc

Never argue with an idiot.  He brings you down to his level, then beats you
with experience...
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