More oversteer than the setup might suggest... ideas why?
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Honda-Tech Member
Joined: Mar 2002
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From: Seattle, WA / Ann Arbor, MI
By FWD Honda auto-x standards, I have a soft and understeery setup on paper, yet the car feels very balanced to me in auto-x settings. Normally it's easy to get the rotation I need in the tight corners while keeping stability in transitions, and today on a wet course even with the rear shocks at only 50% stiffness (same for fronts) the rear was *very* active and I spun 270* on my last run... I wasn't going banzai-crazy on that one either, just a little too much trail braking.
Comparing to other auto-xers' typical 450/600 or thereabouts rates and big fat rear swaybar coupled with not so huge front bar (or none at all), I'm amazed my car feels this neutral. I know it has a lot to do with driving style but I've tried a few different things - the car is always pretty balanced. Note that this ISN'T a problem, I'm just curious as to what could possibly be the cause because it's always kinda surprised me. I'm no driving god, but I do place quite well overall and for my class (SM) so it's not like I'm a drift-crazy hack. My setup:
'98 Integra LS coupe
-GCs, 380/350 rates, 8"/7" springs, lowered about 2.0"/1.4" from stock
-Suspension Techniques 25.4/19mm bars, solid, polyurethane mounts.
-OTS Koni Yellows, settings usually end up at about 50%F/90%R for dry auto-x's. Today's wet course I used 50%/50% and still got a little more rotation than I really needed.
-Toyo RA-1s, full tread with ~8 events on them (we get a lot of rain and I need my tires to last a while). About 2/32nds to the wear bars now.
-~120lbs weight reduction in front and ~80lbs rear in auto-x trim.
-Alignment: 0 toe F/R (daily driver), -2.0*/-1.4* F/R camber.
-~150whp/128wtq LS all-motor, 4.40 FD and ITR LSD.
I've done a lot of frontal weight reduction and Integras have more even weight balance than a typical Civic hatch, but still... those spring rates and bar sizes are quite conservative compared to most Honda guys' setups.
What's the deal and/or what am I doing wrong?
Comparing to other auto-xers' typical 450/600 or thereabouts rates and big fat rear swaybar coupled with not so huge front bar (or none at all), I'm amazed my car feels this neutral. I know it has a lot to do with driving style but I've tried a few different things - the car is always pretty balanced. Note that this ISN'T a problem, I'm just curious as to what could possibly be the cause because it's always kinda surprised me. I'm no driving god, but I do place quite well overall and for my class (SM) so it's not like I'm a drift-crazy hack. My setup:
'98 Integra LS coupe
-GCs, 380/350 rates, 8"/7" springs, lowered about 2.0"/1.4" from stock
-Suspension Techniques 25.4/19mm bars, solid, polyurethane mounts.
-OTS Koni Yellows, settings usually end up at about 50%F/90%R for dry auto-x's. Today's wet course I used 50%/50% and still got a little more rotation than I really needed.
-Toyo RA-1s, full tread with ~8 events on them (we get a lot of rain and I need my tires to last a while). About 2/32nds to the wear bars now.
-~120lbs weight reduction in front and ~80lbs rear in auto-x trim.
-Alignment: 0 toe F/R (daily driver), -2.0*/-1.4* F/R camber.
-~150whp/128wtq LS all-motor, 4.40 FD and ITR LSD.
I've done a lot of frontal weight reduction and Integras have more even weight balance than a typical Civic hatch, but still... those spring rates and bar sizes are quite conservative compared to most Honda guys' setups.
What's the deal and/or what am I doing wrong?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by White98LS »</TD></TR><TR><TD CLASS="quote">What's the deal and/or what am I doing wrong?</TD></TR></TABLE>
I've found that the harder I push the car and the faster i've gone, the more I have to dial out understeer and make it more 'loose'.
I've found that the harder I push the car and the faster i've gone, the more I have to dial out understeer and make it more 'loose'.
Thread Starter
Honda-Tech Member
Joined: Mar 2002
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From: Seattle, WA / Ann Arbor, MI
I'm finding the opposite to be the case with me. If I start going too hard and fast, that's when the tail gets unruly at which point I have to either rein it in with damper/tire pressure settings or by exercising more discipline in my driving hehe. For what it's worth, I believe I was 5th out of about 40-45 drivers overall in this morning's run group... not to sound wholly immodest, but I don't think I'd be doing quite that well if I was being too timid with the car.
Forgot to mention: I like using 35-36psi F and R. On the street it handles a lot "safer" and pushes much more... probably a mix of street tires and me not going crazy like I do in auto-x.
Forgot to mention: I like using 35-36psi F and R. On the street it handles a lot "safer" and pushes much more... probably a mix of street tires and me not going crazy like I do in auto-x.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ »</TD></TR><TR><TD CLASS="quote">I've found that the harder I push the car and the faster i've gone, the more I have to dial out understeer and make it more 'loose'.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by White98LS »</TD></TR><TR><TD CLASS="quote">I'm finding the opposite to be the case with me. If I start going too hard and fast, that's when the tail gets unruly </TD></TR></TABLE>
You just said the same thing, White98LS.
Give me a understeering pig of a car, I'll spin it right round (baby right round like a record baby right round round round).
I think it has more to do with the driver in this case. It's more likely the driver than something magic in your setup. I tracked a rental Neon from Thrifty earlier in the year, I didn't think it understeered too bad, but then again I was trail braking half-way into each corner and really tossing it around in ways that would make my Integra get all ***-happy.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by White98LS »</TD></TR><TR><TD CLASS="quote">I'm finding the opposite to be the case with me. If I start going too hard and fast, that's when the tail gets unruly </TD></TR></TABLE>
You just said the same thing, White98LS.
Give me a understeering pig of a car, I'll spin it right round (baby right round like a record baby right round round round).
I think it has more to do with the driver in this case. It's more likely the driver than something magic in your setup. I tracked a rental Neon from Thrifty earlier in the year, I didn't think it understeered too bad, but then again I was trail braking half-way into each corner and really tossing it around in ways that would make my Integra get all ***-happy.
Thread Starter
Honda-Tech Member
Joined: Mar 2002
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From: Seattle, WA / Ann Arbor, MI
I don't understand what you mean. By what RJ said, it sounds like the harder and faster he goes, the more he has to fight understeer. The harder and faster I go, the more I fight oversteer. Right?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by White98LS »</TD></TR><TR><TD CLASS="quote">I don't understand what you mean. By what RJ said, it sounds like the harder and faster he goes, the more he has to fight understeer. The harder and faster I go, the more I fight oversteer. Right?</TD></TR></TABLE>
I had to read it four times, but yeah, my mistake.
I think that's a consequence of the use... come into some a slalom too fast, get a little behind and un-smooth and you spin. Steady state turning (carousel, skidpad, etc.) will bring out the understeer in a FWD econobox though, especially if you come in too hot for something like that.
I had to read it four times, but yeah, my mistake.
I think that's a consequence of the use... come into some a slalom too fast, get a little behind and un-smooth and you spin. Steady state turning (carousel, skidpad, etc.) will bring out the understeer in a FWD econobox though, especially if you come in too hot for something like that.
Thread Starter
Honda-Tech Member
Joined: Mar 2002
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From: Seattle, WA / Ann Arbor, MI
True. Today's course and conditions were perfect for inducing understeer... wet, changing surfaces, lots of slaloms and corners where you don't have much chance to brake in a straight line so you end up trail-braking. I guess what kept coming back into my mind is how the hell I would have been able to get around the course quickly at all with some of the more common rear-biased setups. Hopefully within the next week or two I'll get it corner-weighted and know the real weight distribution.
Whatever it is, today was damn fun. Too bad I forgot to charge my vidcam.
Whatever it is, today was damn fun. Too bad I forgot to charge my vidcam.
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neutral, loose, and tailhappy are highly subjective terms.
One person's loose is pushing like a pig to someone else.
One person's loose is pushing like a pig to someone else.
You have to agree with that!!
I don't feel trailbraking in the rain is effective at all. Big swaybars are a dissadvantage in the rain as well. Weight transfer needs to be slower. I try to brake in a straight line in every corner (where possible).
I don't feel trailbraking in the rain is effective at all. Big swaybars are a dissadvantage in the rain as well. Weight transfer needs to be slower. I try to brake in a straight line in every corner (where possible).
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