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Author Topic:   To sway(bar)or not to sway(bar)
Hobbystocker
Member
posted March 13, 2004 09:58 AM
Ok peoples....I'm looking for some opinions on sway bars. What are the advantages/disadvantages running them? We race an IMCA Stock Car on 3/8 mile semi banked oval. I have ALWAYS had trouble getting this car to hook up. To me, when I'm in the drivers seat under race conditions, when I go into a turn, the whole car feels like it's about to roll over on its right side. I have some video of the car but it's not very well shot, its taken from so far away its hard to see what it looks like.I do have a "still" picture of the car in the middle of a turn and it sure looks to me like the left side is WAY higher than the other cars I run against. I have heard some people say they always run a sway bar and some that never have. Am I wrong to think that a sway bar is primarily used to balance the weight of the car as it turns, therefore keeping the weight more evenly distributed to all 4 wheels. What about a front and rear sway? Let me know what you think. I'd like to experiment with it early in the season to see what the difference would be.

Thanks,
Hobbystocker

[This message has been edited by Hobbystocker (edited March 13, 2004).]

racer17j
Member
posted March 13, 2004 06:07 PM
what are you running for springs? and what are your ride heights?i don't like sway bars on either end they help on asphalt but dirt it's just extra weight. can you still run sway bars in i stocks i know hobbies can't run them anymore


Hobbystocker
Member
posted March 13, 2004 09:01 PM
To be honest, I'm not sure if rules allow them or not. Our springs were 1100rf 1000lf 225lr 200rr. Ride heights were (guessing, not sure off the top of my head) around 7-71/2 all the way around. What I don't understand is you say they work well for asphalt but not dirt. Can you explain your reasoning on that? It's sad but believe it or not I've raced for over 5 years and still don't know. My brother is the mechanic and I get the fun part of driving. But in order for me to get better in Stock Car, I need to be able to communicate better as far as what the car is doing.Don't get me wrong, I know quite a bit more than when I started but I'm still a work in progress. We had great success in Hobbystocks (not IMCA, "outlaw") but I am just struggling in this class. I've raced 1 full season and a half now and just almost dread feature time. All I do is just slide all over the place when it gets dryslick and I'm lost. The car scales out really well.


racer17j
Member
posted March 13, 2004 09:15 PM
on the dirt you have to deal with ruts and changing conditions that the paved guys don't have to worry as much about they also run alot lighter springs and don't use the roll as you plant on the cushion on a good track they try to keep the car as stable and flat as they can. what did it scale out at? whats your pinion alngle at?whats it doing bad in or off or what?


Raz_900
Member
posted March 15, 2004 10:03 AM
On a smooth dry slick, the sway bar will probably help you. As stated above, the more rutted the track is, the less consistant it would probably be with one on.

That said, I ran bars on both ends last year. This year I'm losing the rear bar (5/8"). My front bar is a 1" and I run the same springs as you on a 3200 lb (with driver) car. Without the bar, I'd think the car would feel like it was about to flip on it's side in the turns. The say without a bar to up spring 200 lbs. The guys at my track that run without a front bar run 1200 lf and 1400 rf springs.

I'd say you either need a bar or heavier springs. Take your pick.

racer17j
Member
posted March 15, 2004 10:49 AM
his springs are fine raz most i stocks weight about 2600-2800#


stockcar5
Member
posted March 15, 2004 11:04 AM
i wouldnt worry about the sway bar...they are illegal in imca now. another great rule..

------------------
www.geocities.com/dirtstockcar5


Hobbystocker
Member
posted March 15, 2004 01:41 PM
Well....never mind about the sway bars then. LOL I now know that they are illegal. As I said, I've ran Stock Car for 1 1/2 yrs now but it was never a sanctioned track/class. It was under "IMCA Type" rules. Now I know. As far as scaling, it was somewhere around (guessing here as I don't have my notes with me) %53-54 rear %52left %54-56 cross. The car runs absolutely GREAT in the heat races on a heavy track, but come feature time it's a whole different monster. The ENTIRE car slides up the track in the middle/off. The only way I can keep it from doing this is to get out of the gas WAY before anyone else does, but then they are half way down the next straight by the time I'm going again. I've tried running different lines (from watching other heat races in my class) I watch the races before mine to see what the track is doing and how the cars are dealing with it. As far as I know it may be that the car itself is just not up to snuff.
Anyway, thanks for the replys guys!

Peace,
Hobby


dtd_93
Member
posted March 15, 2004 02:40 PM
from what i know.. i'd say you got way to much cross in it


Ego Racing
Member
posted March 15, 2004 03:44 PM
Try to get the cross down to around 52-53% and see if it helps it will make a change but not a huge one so if it dosen't like it reverse the change.
What is the front toe out? try 1/4 inch more toe out will make the front stick better but can cause a loose condition comming out of the corner.
What rear stagger are you running? To much can cause the rear to get loose under throttle, so use less on a dry/slick track.
You can put a different left wheel offset on it to move the tire farther away from the centerline or use a wheel spacer.
What gear are you running compaired to everyone? A higher gear will not allow you to spin the tires as easy and you can carry more speed into the corner.
how is the car going into the corner? Alot of corner exit problens are due to entry problems. When the track is dry/slick you want to try to drive it like an asphault track and keep the rear under the car as opposed to sliding it around the corner.
Hope some of this helped!


racer17j
Member
posted March 15, 2004 10:03 PM
ego is on the right track way to much cross 52 max is what i run try a 2 in offset rf and maybe a 3 in lr and some more rear stagger and air pressure in the right rear


hiflyin99
Member
posted March 22, 2004 07:34 PM
quote:
Originally posted by Hobbystocker:
Well....never mind about the sway bars then. LOL I now know that they are illegal. As I said, I've ran Stock Car for 1 1/2 yrs now but it was never a sanctioned track/class. It was under "IMCA Type" rules. Now I know. As far as scaling, it was somewhere around (guessing here as I don't have my notes with me) %53-54 rear %52left %54-56 cross. The car runs absolutely GREAT in the heat races on a heavy track, but come feature time it's a whole different monster. The ENTIRE car slides up the track in the middle/off. The only way I can keep it from doing this is to get out of the gas WAY before anyone else does, but then they are half way down the next straight by the time I'm going again. I've tried running different lines (from watching other heat races in my class) I watch the races before mine to see what the track is doing and how the cars are dealing with it. As far as I know it may be that the car itself is just not up to snuff.
Anyway, thanks for the replys guys!

Peace,
Hobby



I have had the same problem. The car works great in the heats, but as soon as it dried out it was a handfull. All I did was soften up my RF 100lbs from where I was. Then it was a fast driveable car again. Good luck


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