Just have a quick question for you guys. If fwd cars understeer b/c our drive wheels are also our turning wheels (and weight transfers to the rear during acceleration through a turn), then wouldn't having the car raked a little bit and having the rear springs/shocks stiffer help reduce understeer?

 

 

yes, it would...i ate it though cause my rear was so stiff - it broke loose as i went thru a turn..

 

I guess I'm more interested in the part about the car being raked. Would it help if the rear of the car is higher than the front, therefore keeping a bit more weight up front when taking turns?

 

It may help, but its not the proper solution to the problem and may create other problems of its own.

 

Here ya go

https://honda-tech.com/zerothread?id=285747

ALso search for archived topics created by 'RR98ITR' in the RR/AX forum.

You'll see quite a few on suspension theory.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by George Knighton &raquo;</TD></TR><TR><TD CLASS="quote">

There are two ways to alter the basic handling dynamics of the ITR.

(1)JDM - Balance: These folks tend to use higher tyre pressure in the front, stiffer springs in the front, more camber in the front.

(2)USDM - Rotation: These folks tend to use higher tyre pressure in the back, stiffer springs in the back, and lower nose.

Both techniques tend to work, provided you execute the theory all the way through and don't mix/match.

There are people at Honda Tech who can provide you with an exhaustive discourse on the theory of suspension dynamics, handling dynamics, and polar moment.

They haven't hesitated to express themselves in the past, and the threads are still there if you search for them.

For what it's worth, the heavy rear idea tends to dominate the Honda Challenge.</TD></TR></TABLE>

True but, the stock ITR doesn't understeer, it is pretty neutral till it oversteers smoothely. This is one of the wonderful and endearing qualities of the R's stock suspension.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1GreyTeg &raquo;</TD></TR><TR><TD CLASS="quote">

True but, the stock ITR doesn't understeer, it is pretty neutral till it oversteers smoothely. This is one of the wonderful and endearing qualities of the R's stock suspension.</TD></TR></TABLE>

I would disagree with that. I found my R to understeer slightly at the limit, especially when on the gas. 400f/600r and a roll bar fixed that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dr Pooface &raquo;</TD></TR><TR><TD CLASS="quote">

I would disagree with that. I found my R to understeer slightly at the limit, especially when on the gas. 400f/600r and a roll bar fixed that.</TD></TR></TABLE>

And that bit of understeer was not remedied with different tire pressures?

Different pressures always seem to balance me out and give me better rotation. And no disrespect intended but, when I'd understeer it was directly related to driver error and not the car itself, (at least in my opinion which may not be worth much.)

Heres a totally different take but, how would say just the substitution of the JDM/ITR rear anti-sway bar affect everything? I know it will reduce sway and induce rotation but, does anyone that tracks regularly do this mod combined with the stock R suspension? Or is it a moot point till you go for some big dollar aftermarket setup?

 

prepare to be blown away!!! scott goes really deep with this stuff!

 

yep,
I`m on the JDM-balance side... Stiff and hard and more than 2° camber on the front. Works great as long as the tires grip. My crash on the Nurburgring a few weeks ago had been typical for that. I lost grip on the front tires in a down-leading right-turn, corrected (too much), found grip again and saw the rear passing my left ear untill I kissed the wall

The JDM-balance thing leads you to a higher limit on the front. And breaking through this limit then is violent and it happens really fast.

 

Thanks for the replies guys. I'll probably give both setups a try.