Use of Handbrakes?

hklatte · 06-04-2009, 06:06 PM

Is handbrake turns very bad to our subies?

Wondering if anyone uses handbrakes frequently when autox'ing...

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REX8 · 06-04-2009, 06:11 PM

Quote:

Originally Posted by hklatte

Is handbrake turns very bad to our subies?

Wondering if anyone uses handbrakes frequently when autox'ing...

There aren't corners tight enough in autox to warrant even the consideration of using the handbrake. Maybe some ProSolo guys at the start-line...

Static friction > sliding

CamaroFS34 · 06-04-2009, 07:14 PM

Quote:

Originally Posted by REX8

Maybe some ProSolo guys at the start-line...

That's about it for me.

JamesWilson2 · 06-04-2009, 10:06 PM

Yup, just for ProSolo starts where the car may roll in/out of the lights.

Otherwise-- *facepalm* to the guys who do it on course.

Sylvain b · 06-05-2009, 08:22 AM

I did some test two years ago in a parking lot (not an event). For ONE airpin on a single cone, the handbrake could save 0.25 sec very easy.

But you have to do it perfectly, have some power (sti at least) and good grip.

For any other type of turn it will not be the fastest way around.

maxQ · 06-05-2009, 08:30 AM

I used the handbrake at the last DC Prosolo for more than the start line!!!!

Of course, I was going straight at the time and was trying to figure out why the car seemed a bit slow.

PKer · 06-05-2009, 01:37 PM

Quote:

Originally Posted by maxQ

I used the handbrake at the last DC Prosolo for more than the start line!!!!

Of course, I was going straight at the time and was trying to figure out why the car seemed a bit slow.

Been there...man it sucks

Patrick L · 06-05-2009, 01:46 PM

If you like your center diff. I would suggest not doing e-brake turns on pavement with the 5 Speeds. I have seen several trannies come to me with problems with the center diffs giving out. Mainly the snap ring on the back of the diff that holds the LSD pack & spider gears in place. It can pop out and then some times lodge themselves in between the setup gears in the tail section of the transfer case. In one case, it destroied the gears and bearings in the tail section along with having to buy a new center diff.

BTW, I rebuild trannies on a regular basis.

mccanixx · 06-05-2009, 01:57 PM

Quote:

Originally Posted by maxQ

I used the handbrake at the last DC Prosolo for more than the start line!!!!

Of course, I was going straight at the time and was trying to figure out why the car seemed a bit slow.

Quote:

Originally Posted by PKer

Been there...man it sucks

Duct tape the button down FTW.

Patrick L · 06-05-2009, 02:02 PM

If can't duct it...F*** it. lol!
I have done that before.

Sylvain b · 06-05-2009, 02:03 PM

Quote:

Originally Posted by Patrick L

If you like your center diff. I would suggest not doing e-brake turns on pavement with the 5 Speeds. I have seen several trannies come to me with problems with the center diffs giving out. Mainly the snap ring on the back of the diff that holds the LSD pack & spider gears in place. It can pop out and then some times lodge themselves in between the setup gears in the tail section of the transfer case. In one case, it destroied the gears and bearings in the tail section along with having to buy a new center diff.

BTW, I rebuild trannies on a regular basis.

DCCD are supposed to be ok!?

And what is good is when take a U-turn with the handbrake, all 4 wheel are still rotation at a very slow speed. So you can put the first gear without problem.

And it is good to modify the handbrake to be able to release it without holding the button.

pete_falcone · 06-05-2009, 02:05 PM

Only time I've used handbrake on an Auto-X was to launch the car on an incline. And that was before I got used to heel-toeing.

Mr.Krinkle · 06-06-2009, 06:25 PM

I've done it twice in a local event during test and tune to see how it would work. 1st time screwed me all up,2nd time was

I didn't feel comfortable enough to try it in my runs.

573 · 06-07-2009, 12:54 PM

I asked a similar question on dirtyimpreza and got some good input. http://www.dirtyimpreza.com/forums/s...ad.php?t=10225

The general consensus is that you shouldn't do it if it can be avoided. This is more rallyx than autox, but they suggested pendulum turns and left foot braking as an alternative. Of course, if you have an sti, your center diff opens up when you pull it so you can do it all you want with no ill effects, at least for the center diff. If you do it a lot, you will burn through the shoes for your hand brake in no time.

06-04-2009, 06:06 PM	#1
hklatte Scooby Newbie Member#: 131234 Join Date: Nov 2006 Chapter/Region: SWIC Location: Mesa, AZ Vehicle: 2007 WRX Wagon White	Use of Handbrakes? Is handbrake turns very bad to our subies? Wondering if anyone uses handbrakes frequently when autox'ing... * Registered users of the site do not see these ads.

06-05-2009, 08:22 AM	#5
Sylvain b Scooby Newbie Member#: 43330 Join Date: Sep 2003 Chapter/Region: E. Canada Location: Quebec city, Canada. Vehicle: 1993 Impreza L Titanium grey	... I did some test two years ago in a parking lot (not an event). For ONE airpin on a single cone, the handbrake could save 0.25 sec very easy. But you have to do it perfectly, have some power (sti at least) and good grip. For any other type of turn it will not be the fastest way around.

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06-04-2009, 10:06 PM	#4
JamesWilson2 ForumWars Winner! Member#: 196948 Join Date: Dec 2008 Chapter/Region: TXIC Location: Houston, TX Vehicle: 2012 WRX SWP TexasRallysport	Yup, just for ProSolo starts where the car may roll in/out of the lights. Otherwise-- facepalm to the guys who do it on course.

06-05-2009, 08:30 AM	#6
maxQ Scooby Newbie Member#: 2446 Join Date: Sep 2000 Location: limbo Vehicle: '04 insert acronyms background	I used the handbrake at the last DC Prosolo for more than the start line!!!! Of course, I was going straight at the time and was trying to figure out why the car seemed a bit slow.

06-05-2009, 01:46 PM	#8
Patrick L Scooby Specialist Member#: 634 Join Date: Dec 1999 Chapter/Region: TXIC Location: LMSports/Kartboy/Izoomgraphics Vehicle: 2000 Impreza 2.5RS DSP#195/ZzyzxMotorsports	If you like your center diff. I would suggest not doing e-brake turns on pavement with the 5 Speeds. I have seen several trannies come to me with problems with the center diffs giving out. Mainly the snap ring on the back of the diff that holds the LSD pack & spider gears in place. It can pop out and then some times lodge themselves in between the setup gears in the tail section of the transfer case. In one case, it destroied the gears and bearings in the tail section along with having to buy a new center diff. BTW, I rebuild trannies on a regular basis.

06-05-2009, 02:02 PM	#10
Patrick L Scooby Specialist Member#: 634 Join Date: Dec 1999 Chapter/Region: TXIC Location: LMSports/Kartboy/Izoomgraphics Vehicle: 2000 Impreza 2.5RS DSP#195/ZzyzxMotorsports	If can't duct it...F*** it. lol! I have done that before.

06-05-2009, 02:05 PM	#12
pete_falcone Scooby Specialist Member#: 123330 Join Date: Aug 2006 Chapter/Region: International Location: Apalit Vehicle: 02 CVC, 98 Carmy 747 Philippine Airlines	Only time I've used handbrake on an Auto-X was to launch the car on an incline. And that was before I got used to heel-toeing.

06-06-2009, 06:25 PM	#13
Mr.Krinkle Scooby Specialist Member#: 109623 Join Date: Mar 2006 Chapter/Region: MAIC Location: Waynesboro, VA Vehicle: * Touching the Blue*	I've done it twice in a local event during test and tune to see how it would work. 1st time screwed me all up,2nd time was I didn't feel comfortable enough to try it in my runs.

06-07-2009, 12:54 PM	#14
573 Scooby Specialist Member#: 144821 Join Date: Mar 2007 Chapter/Region: MWSOC Location: Troy, Michigan Vehicle: 1994 LS1 Miata 2002 2.5ts wagon white	I asked a similar question on dirtyimpreza and got some good input. http://www.dirtyimpreza.com/forums/s...ad.php?t=10225 The general consensus is that you shouldn't do it if it can be avoided. This is more rallyx than autox, but they suggested pendulum turns and left foot braking as an alternative. Of course, if you have an sti, your center diff opens up when you pull it so you can do it all you want with no ill effects, at least for the center diff. If you do it a lot, you will burn through the shoes for your hand brake in no time.