Ben from Bulletproof Automotive had them on his car... and I know honda tuning's new s2000 project car is running them...

 

Endorsement is not representative of functionality.

 

I agree with all that Jerry's written. In addition, I've seen and rode in an S2000 with the Amuse coilovers. They're really no different from the regular Bilstein PSS9s. They're basically Bilsteins, re-valved to Amuse specs, and marketed up the wazoo!!! If you're interested in the PSS9s, they sell for $1500 I think. Save some dough bro..

 

I ll have to agree with Jerry on this one as well. The car def pushes out of the box.

Also, what Wantone says is true and an interesting find. Bilstein does make the suspension for amuse to their specs. Basically the PS9 system with a twist.

I ll hopefully be instally the bilstein set up in the next couple weeks. I have had a few differenmt set ups on my car and will def report back with my findings on this set up as well.

 

doco, I can't wait to hear about it!!!

 

Regrettably, I must completely disagree with you.

The scenario you describe would only occur if you transfer the weight of the car forward during the transition from one side to the other.


Umm, like if you're entering a turn and you get on the brakes? (like most turns are approached) Also, cross weight is what I'm referring to, Weight transfers across the car. If you are entering a left turn and you get on the brakes. The biggest weight transfer you have is from left rear tire to right front tire. The fact that you are on the brakes probably before you are turning the car also makes the front left take some of the weight off the right rear.

Weight on the rear of the car, stays on the rear of the car.

Wrong, weight transfer's to the front when ever the brakes are applied, and weight is sent to the rear when accelerating

Shifting weight from side to side does not magically transfer load to the front.


correct, braking and accelerating does this.

Additionally, stiffer spring rates would improve the ablity of the car to complete a transition quickly.



Everyone assumes, if a car is loose, make the springs stiffer, wrong, why do you think they changed the 04's rear spring rates to a lower rating. To help the weight transfer more gradually. Don't think of springs as holding a car up, think of them as pushing the tire down. Higher spring rates push the tire harder, causing it to give away sooner. Which in turn causes a slide.

With stiffer spring rates, the suspension wouldn't have to travel as far when performing a transition. In other words, the softer springs in the '04 would make your scenario WORSE.

Please refrain from shoveling bad information out.


This is not bad information, this is fact proven race car setups, Setting up a car can be done in many ways, maybe something that works for you will not work for me and vice versa.

Sorry, roll center is not a factor in 'bump steer.' An unfavorable transition in suspension alignment is the root cause.


But not the only cause, and when shopping for suspension, the cause I explained will be fixed by purchasing an adjustable suspension.

In our case, its placing a suspension are at the limit of travel while the other arms are free to move. This causes the arms to pinch in such a way as to change toe settings (or camber) dramatically
Under compression this is a dramatic shift to toe out and on a fully unloaded suspension, additional toe in. It is very unlikely to encounter this situation unless your car is lowered more than an 1" and this is the primary reason why many of us recommend that you NEVER lower your car dramatically.

On a side note, you can purchase non-compliant rear arms that address this issue for lowered cars in the S2ki.com marketplace.

Snap oversteer with respect to the S2000 is a driver induced error plain and simple.


True, but sometimes this driver induced oversteer is to correct car understeer.

I respect your opinion Jerry, I think on this issue we will have to agree to disagree. Good luck with your suspension setup.

P.S., on the race car team I participate on, we use blistein suspenion and have had nothing but good luck with them. they respond well to change of spring rates too.

 

Are we having two completely different conversations???

Dude what does trail braking or driver induced oversteer have to do with:

Amuse Dampers claiming to cure snap oversteer or bumpsteer on the S2000.

Good info needs the proper context and you are literally having a seperate conversation about driving technique as opposed to equiment merits...

You never stated anything about trail braking, accelerating, or even implied as much in your original post. What the hell does this have to do with snap oversteer??? When a Monkey slams brakes while is turning it will oversteer with virtually any suspension setup. DUH! That is driver induced behavior.

Repeat Ad Nausem for the rest of your replies.

This isn't a flame, I just want to make sure folks are clear that there are two different conversations taking place here.

Yes, I agree 1000% that driver induced behavior is the root cause of the "snap oversteer" characteristics. There is a world of difference between a 'correction' and 'snap oversteer.'

I happen to think Honda changed the rear spring rates to save customers from having to wear a kidney belt.

I never said the stock S2000 was loose. You completely missed the point I was making. To enable faster transitions you need stiffer spings. That's physics. If the tires aren't touching pavement, you don't have traction. Softer springs mitigate pavement changes slower, but they also keep your teeth from chattering together. Whether a car is 'loose' or 'tight' has less to do with spring rates and more to do with the rate bias between the front and rear suspension.

The weight of the car determines how hard the tires are 'pushed' against the pavement. Springs rates have ZERO effect on this. If there is 500kgs of weight on a corner of a car and you have 10k springs or 1k springs, there is still only 500kgs of weight pushing the tire to the pavement.

Again, don't sweat it. I just wanted to make sure that other folks reading the thread are not mislead.