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NEW STI Owner looking to Rallycross - advice needed part 1

Oldalfaguy 02-20-2004 09:16 PM

NEW STI Owner looking to Rallycross - advice needed
Hi, I'm looking to do my first Rallycross next month in South Central FL and was wondering about safety equipment in my STI. What kind of harness should I use / is recomended and are there mounting points in the floor of the car? Where would be the best place for a fire extinguisher which would have the least amount of intrusion in the cabin (as this is my daily driver). Need a helmet and would take a used one if possible - were to get one?
Any other advice would be appreciated,
Thanks
John
Flesher 02-20-2004 09:17 PM

All you need for rallycross is a helmet.
Oldalfaguy 02-20-2004 09:20 PM

Wow, that was FAST :eek:

I think I'd like the harness to keep my skinny butt firmly planted in the seats designed for horizonatally enhanced Americans. I really don't get much support from these pretty seats at all.
mofugga 02-20-2004 09:38 PM

try it first without a harness to see if you really like it, then buy a harness. speeds will be fairly low, you probably won't get out of 2nd gear.
Flesher 02-20-2004 09:41 PM

I never even left 1st gear. :cool:

I've heard people say that a harness is bad w/o a rollcage, because if you do roll, the harness doesn't allow you to slip side to side if the roof caves in. I have no idea if this correct.
Oldalfaguy 02-20-2004 09:42 PM

OK, I'll try it...but I probably WON'T LIKE IT...:>)
Thumper23 02-20-2004 10:52 PM

[QUOTE][i]Originally posted by Flesher[/i]
[B] I never even left 1st gear. :cool:

I've heard people say that a harness is bad w/o a rollcage, because if you do roll, the harness doesn't allow you to slip side to side if the roof caves in. I have no idea if this correct. [/B][/QUOTE]


yep, broken neck = bad
ElTorrente 02-20-2004 11:38 PM

^ whoa. there's something to think about.
Rebellion 02-20-2004 11:48 PM

this is rallyx though.. you shouldn't be rolling.
thechickencow 02-21-2004 03:07 AM

[QUOTE][i]Originally posted by Rebellion[/i]
[B] this is rallyx though.. you shouldn't be rolling. [/B][/QUOTE]

It happens.
Fred 02-21-2004 09:00 AM

[url]http://www.pfyc.com/store/merchant.mv?Screen=PROD&Store_Code=PFYC&Product_Code=GN2108&Product_Count=12&Category_Code=ALNEW[/url]

I'm using the lap belt from the center of my backseat, which has been bolted to the driver's seat. Cinches me down real good. But I'm thinking about getting one or two of these for my wife's car and for using in students' cars (autox instructor).
Chaste Automotive 02-21-2004 09:14 AM

[QUOTE]I've heard people say that a harness is bad w/o a rollcage, because if you do roll, the harness doesn't allow you to slip side to side if the roof caves in. I have no idea if this correct.[/QUOTE]

This is one of the biggest myths ever perpetrated on the internet. Completely not correct no matter how many "internet engineers" may repeat it completely untrue. I would tell you to be careful of your wheels you are running 17" on ou sti which not optimum for dirt, watch out for ruts since you can pop the bead on the tire no rear damage just a pain. Get a sump guard primitive sells cheap ones that work well, you can get a helmt, harnesses now or later and have fun.
BlackfeetVI 02-21-2004 09:29 AM

You can do what I and several other people have done...Get your seatbelt snug, twist the buckle a couple of times and then latch it. It should keep you in place. Other than that, a helmet is all you really need.
Oldalfaguy 02-21-2004 12:04 PM

Thanks for all the great advice.

1. I don't understand the concerns about the 17" wheels. What is the problem with running them in the dirt? Should I use smaller wheels or just wheels optimized for the dirt - never heard of that animal.

2. I do take exception to the harness and rollbar issue. As a Trauma Nurse, I have a great deal of experience in the afteraffects of rollover incidents and have never heard of a cervical fracture related to being too tightly restrained in a vehicle. Most, if not all, cervical fractures we've seen are attributed to coup-countercoup stresses. That is, front and then rear loading of the cervical vertebrae. Side to side ( we would see this on CT by impingment or disruption of the vertebrae into the neurol tube [spinal cord]) and his has not happened within my experience not have I ever heard of it. Side to side forces are restricted or absorbed by the rest of the body slipping out of the seat and absorbing most of the energy (seat occupent restraints are designed for front to rear impacts and very little in the design of days cars allow for side impact protection except for side impact beams and new side airbags). So, while front to rear stress frequently do cause broken necks (even with belted passengers - ergo the new HANS devices) I don't think that the logic for avoiding harnessing to prevent side to side fractures is valid. But, thanks anyway,
John
leecea 02-21-2004 12:29 PM

I think the point about rollovers is that, with a regular belt, you can slip your upper body sideways and kinda duck down a bit if the roof caves slightly. With a harness, you are stuck upright. In my WRX, there is only an inch or so between the top of my helmet and the roof. So if the roof came down, say 4", my neck would get bent or compressed if I was in a harness.

I rolled a car once years ago and it seemed like the roof stayed pretty much intact, but each time will be different I think. I have certainly heard that more people roll at rallycrosses than autoxs.
BlackfeetVI 02-21-2004 01:10 PM

The Subarus have a pretty good rollcage setup from the factory with the "Ring shaped reinforcement structure" and if you roll a car at a rallyx, odds are it's going to be well below the structural integrity limits of those, as the speeds involved will most likely be lower than if you were to slide off the highway and roll.
ElTorrente 02-21-2004 02:50 PM

Well, "internet myth" or not- I know that if I was FORCED to remain upright from being belted in tightly, I would certainly feel safer with a roll bar.. I think anyone would.

Does that cause deaths/injuries on a regular basis? Probably not- but remaining perfectly upright in a roll without a ROLLbar sounds kinda creepy to me :D.
Thumper23 02-21-2004 03:48 PM

like everyone else has said, the harness keeps you upright so that if the roof collapses, your body has no where to move laterally. Therefore, the collapsing roof (won't happen at a rally-x) will impart a force directly downwards on your head. Its not that hard to picture.

Does it matter for a rally-x, no.
Does it matter for the road, probably not.

Personally, I wouldn't do it.

About the 17" wheels, you can run them on the dirt. Other STi owners have. It depends on the surface though. If its starts to get loose, those tires are gonna be useless. There summer tarmac tires, not made for the dirt, gravel, etc.

A 16" wheel is the best you're gonna do for the STi. And either put some snow tires on it or find some actual gravel rally tires.
CoiloverKid 02-21-2004 04:22 PM

change out your brakes for smaller ones, get 15's with rally tires, sell your STi suspension for some DMS or equivalent and jack that sucker up 3 inches and get some mudflaps! :disco:
Fred 02-21-2004 07:39 PM

Forget about "preparing" the STi for rallyx. If it's going to be pretty bumpy, remove the sway bars for more suspension travel. Otherwise, just make sure you secure yourself as well as possible in the seat, and go have fun. You could be driving a lot worse...

[IMG]http://kevinmallen.home.att.net/rallyx2_25.jpg[/IMG]

:lol:
Chaste Automotive 02-22-2004 05:22 AM

Oldalfaguy you are totally correct, as another with a lot more first-hand knowledge of thousands of fatal crashes I totally agree with you on the harness issue. People will just repeat what they have heard before but hey what can we do?

[QUOTE]like everyone else has said, the harness keeps you upright so that if the roof collapses, your body has no where to move laterally. Therefore, the collapsing roof (won't happen at a rally-x) will impart a force directly downwards on your head. Its not that hard to picture.

[/QUOTE]

You are correct it is not hard to picture in a world simply devoid of physics. FWIW in a roll over of any speed the myth of the "I CAN DUCK MY HEAD DOWN" just doesn't work because people are simply not strong enough to hold themselves down. The forces would throw you all over the car and sometimes out of the car even with conventional belts. I guess since most childrens seats (not baby seats) have 4-point harnesses we are all going to crush the heads of our children as well. Even with a harness (4,5, or 6) you will still move around considerably in any roll over accident. Sorry if this comes off as a rant but I am sick of this STUPID STUPID STUPID MYTH being perpetuated since it is simply not true. Frankly as I have posted before DOT would require them if they thoguht people would wear them but they ahve a hard enough time getting people to wear 3 point belts that they feel that nobody would wear 4-point belts.

Now you do not want to run 17" because there is not enough sidewall to protect your rims that is really the main arguement against running the 17" and because with the additional sidewal area of a 15" tire you can play with tire pressure to get more or less traction. Enjoy your first rallyX and get a sump guard this will realy protect your car.
EHobron 02-22-2004 10:03 PM

Ditto! (Chaste Auto)

One point to add about harnesses is the angle of the mounting points to the occupant. Shoulder harness should be as "flat" as possible (i.e., {90 degrees}= mounted to harness bar or rear seat upper shoulder mount versus {45 degrees)= the rear floor or rear waist belt location).

Beyond that, despite threads to the contrary, the STi is essentially a rally car...minus the cage, etc.... The Suspension on road is harsh but she really soaks up the terrain on a rally cross. All four wheels stay firmly planted! I've been thoroughly impressed!

Hint, DCCD in full locked position!

Good luck, have fun.
akuhner 02-23-2004 09:33 AM

[QUOTE][i]Originally posted by thechickencow [/i]
[B]It happens. [/B][/QUOTE]
Yup, sure does. Only a 1/2 roll for me, and I had a 5pt on, which I will continue to wear at rally-x. Didn't test the duck theory, but in a 3pt your butt would leave the seat and let your head meet the roof anyway. When I was on my side I could only tell because the horizon went sideways and a few things fell across the cabin, I didn't use a single muscle to stay in the seat. The one thing I should have done that I didn't was let go of the wheel incase it decided to spin with any real force.

Watch Pat's video of flipping the Legacy at Lime Rock - I'm not sure if he was wearing a 5pt, but he was going a good bit faster than rally-x and the roof barely caved at all. That answers the question for me (but I would NEVER wear the 5pt on the street).

Alex
wrrrx 02-23-2004 10:32 AM

What class do you intend to run in???
I RallyX'ed my STi in Prod GT last year and was hampered by "non-aggressive all-season" tires, per our local rules (and lack of skill :lol: )
Your tires are gonna have a huge effect on how much traction you get. Those RE070's are gonna [i]SUCK[/i] for RallyX.
(You could search this subforum for my thread on 17" gravel tires from 4-5 days ago..)

Different regions allow different tires, depending on what class you run. If you're allowed to run anything you want, you're still hamstrung by the 17" wheels and low profiles... what Chaste Auto is saying is right on, you really want a taller sidewall- but you can't get it, because of those brakes.
Necessary? No. Desirable? Yes.

I dunno what Thumper23 is talking about- you cannot run 16" tires, and I have yet to find 17" actual rally tires (been looking for a couple months now). :confused:

As far as rally prep- it depends on what kind of terrain your local club runs on- hopefully it's not [B]too[/B] bumpy and hopefully there's not too much gravel... because you [i]will[/i] get rocks flying up and hitting your thin Subaru paint. :mad: (Hint: get some Stongard!! :D )

In the end, Flesher and Fred are correct- all you really need is a helmet and a willingness to thrash on your pretty STi. (My region even has loaner helmets, so you don't even need that!)

Go and have fun,
Russ R
Thumper23 02-23-2004 12:32 PM

[QUOTE][i]Originally posted by wrrrx[/i]
[B]
I dunno what Thumper23 is talking about- you cannot run 16" tires, and I have yet to find 17" actual rally tires (been looking for a couple months now). :confused:
[/B][/QUOTE]


there was a thread about this a couple months ago. Someone did actually find a real rally rim that would fit over the brembo's. I don't remember anything beyond that except that they had to be imported.
thechickencow 02-23-2004 12:39 PM

I don't think 16" rally tires are that easy to come by either from what I've seen.
Thumper23 02-23-2004 12:49 PM

[QUOTE][i]Originally posted by thechickencow[/i]
[B] I don't think 16" rally tires are that easy to come by either from what I've seen. [/B][/QUOTE]

they were stupid expensive too

especially for rally-x

pretty much a non-option
rupertberr 02-23-2004 12:50 PM

Helmet, Mud Flaps, Blue 3M painters tape to protect the side of your car.

Do that for the first RallyCross. If you like it get a second set of wheels with the nobbiest tires you can find, depending on the local rules of course. Rear diff guard if the terrain is rough. Ask the local guys. They will likely help you.

The Sti's I have run against have not done very well mainly because of tires, wheels and suspension that is too hard.
ITWRX4ME 02-23-2004 02:04 PM

I don't know if the STI front seat adjustments are the same as the WRX, but here's an easy way to snug up the belt without twisting.

Lower the seat as far as it'll go.
Latch the seat belt like normal, with the lap belt right across your hip joints.
Grab the shoulder part of the belt and pull up to tighten it across your lap.
While holding it tight, press yourself as far back into the seat as you can and feed the belt back into the tensioner. Try to feed as much belt into the tensioner as you can. Exhale if you have to.
Give the shoulder strap a good snap to force the tensioner to lock.
Hold it there while you crank the seat height adjustment back up until you feel the belt stretched tight across your chest (should be like 3 pumps).

It will stay that way.
wrrrx 02-23-2004 10:50 PM

Thumper- I'm pretty sure I'm familiar w/ the thread to which you're referring....
He was, sadly, mistaken.
The fine Brits at Compomotive told him (I forget the screen name) that they absolutely could get him a TH3 wheel in 16" that would fit. (I believe this was even [B]after[/B] Mazdman got his 17" TH3's). I think it had something to do w/ the way their wheel is shaped- spokes pushed out to the edge.
After a coupla weeks of waiting... They called him back and said it couldn't be done.

[B][i]Believe me[/i][/B], I TOTALLY wish it was true. 16" rally tires might not be near as available as 15"s, but at least they DO exist- without question! Of course, short of following CoiloverKid's advice (which I [i]actually considered last year[/i] before I regained my senses), the 16"s won't do you any good. :(

sorry for the OT, oldalfaguy,
Russ R

[QUOTE][i]Originally posted by Thumper23 [/i]
[B]there was a thread about this a couple months ago. Someone did actually find a real rally rim that would fit over the brembo's. I don't remember anything beyond that except that they had to be imported. [/B][/QUOTE] :rolleyes: :p
Thumper23 02-23-2004 11:22 PM

[QUOTE][i]Originally posted by wrrrx[/i]
[B] Thumper- I'm pretty sure I'm familiar w/ the thread to which you're referring....
He was, sadly, mistaken.
The fine Brits at Compomotive told him (I forget the screen name) that they absolutely could get him a TH3 wheel in 16" that would fit. (I believe this was even [B]after[/B] Mazdman got his 17" TH3's). I think it had something to do w/ the way their wheel is shaped- spokes pushed out to the edge.
After a coupla weeks of waiting... They called him back and said it couldn't be done.

[B][i]Believe me[/i][/B], I TOTALLY wish it was true. 16" rally tires might not be near as available as 15"s, but at least they DO exist- without question! Of course, short of following CoiloverKid's advice (which I [i]actually considered last year[/i] before I regained my senses), the 16"s won't do you any good. :(

sorry for the OT, oldalfaguy,
Russ R

:rolleyes: :p [/B][/QUOTE]

crap, that was the thread I was talking about

see what happens when you don't visit this site every bloody day
rupertberr 02-24-2004 10:10 AM

So where are these 16" rally tires?

I have seen one set of michelin's at sube sport that are way too big to fit under a Subaru and nothing else.

Are there others?
Chaste Automotive 02-24-2004 07:24 PM

16" rally tires are available from Kumho.

You would want ot go with a gravel brake set up from Suaru cheap and readily available everything will bolt right up and not too hard.
rupertberr 02-24-2004 08:17 PM

[QUOTE][i]Originally posted by Chaste Automotive [/i]
[B]16" rally tires are available from Kumho.
[/B][/QUOTE]

I am afraid you are wrong. Wish you weren't.

ECSTA R700 205/60QR15_is the biggest size they have. No 16's of any size.
wrrrx 02-24-2004 09:08 PM

16" Michelin rally tires- GREAT stuff, available from Libra racing;
[url]http://www.libraracing.com/tires.htm[/url]

Too bad there's no 17" for us STi guys... :furious:

Russ R
rupertberr 02-24-2004 09:40 PM

Sube Sports has them for about $25 less per tire. Unfortunately they are just under an inch taller then the correct size for the WRX. I believe they hit part of the strut.:(

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