Tein Flex A

[solidONE]

Originally Posted by CSG Mike

Damping does not work in a linear fashion. Do you have data to actually verify that there is more compression damping?

Yes I have data of the setup I test. no data beside feel of the Flex Z

[CSG Mike]

Originally Posted by solidONE

Yes I have data of the setup I test. no data beside feel of the Flex Z

Can you show the data that prevents the wallowing?

If you have sufficient rebound damping, but insufficient compression damping, the end result would be that you downjack the wheels, until you're riding the bump stop or run out of compression stroke, resulting in just a bumpy rear that bounces along. Every bounce would result in the damper compressing more than it decompresses, quickly resulting in running out of stroke.

Lack of compression damping would not result in wallowing.

[solidONE]

Originally Posted by CSG Mike

Can you show the data that prevents the wallowing?

If you have sufficient rebound damping, but insufficient compression damping, the end result would be that you downjack the wheels, until you're riding the bump stop or run out of compression stroke, resulting in just a bumpy rear that bounces along. Every bounce would result in the damper compressing more than it decompresses, quickly resulting in running out of stroke.

Lack of compression damping would not result in wallowing.

The "wallow," if we are talking about the same thing, was caused by the damper compressing down toward the end of the stroke on the Flex Z and riding on the bump-stop. (Which is why I'm assuming the Flex-A with its hydraulic bumpstops would work better in this department) Not a result of jacking down as there were no bumps through the turn. Upping the compression damping should, theoretically, resist compression to that point where it's riding on the stops, thus causing it not to "wallow." As would increasing spring rate. With the damper set at -1 from full stiff, this was the effect it had vs -5 with the "wallowing."

Now, if it was jacking down with -5, then it would have been even worse at -1. Since the single adjustable Flex-z is a rebound adjustment and not compression, it only increases compression by a very small amount compared to rebound.

In other words, the increased compression damping prevented it from riding on the bumpstop mid corner.

[CSG Mike]

Originally Posted by solidONE

The "wallow," if we are talking about the same thing, was caused by the damper compressing down toward the end of the stroke on the Flex Z and riding on the bump-stop. (Which is why I'm assuming the Flex-A with its hydraulic bumpstops would work better in this department) Not a result of jacking down as there were no bumps through the turn. Upping the compression damping should, theoretically, resist compression to that point where it's riding on the stops, thus causing it not to "wallow." As would increasing spring rate. With the damper set at -1 from full stiff, this was the effect it had vs -5 with the "wallowing."

Now, if it was jacking down with -5, then it would have been even worse at -1. Since the single adjustable Flex-z is a rebound adjustment and not compression, it only increases compression by a very small amount compared to rebound.

In other words, the increased compression damping prevented it from riding on the bumpstop mid corner.

Increasing compression damping decreases the speed at which the suspension compresses. It doesn't change the amount of compression at static load.

Your conclusion, while valiant, is incorrect.

[solidONE]

Originally Posted by CSG Mike

Increasing compression damping decreases the speed at which the suspension compresses. It doesn't change the amount of compression at static load.

Your conclusion, while valiant, is incorrect.

... alright mike kang. decreasing the rate of of compression doesn't keep it off the bumpstop in a corner where the compression dynamically increases (not static).

It's not like I'm the only person with access to these dampers. I invite anyone to test the setting yourselves.

"while valiant, is incorrect" lmao... what a db...

[chaoskaze]

@solidONE

Get a Tein A & post review!.

[solidONE]

Originally Posted by chaoskaze

@solidONE

Get a Tein A & post review!.

I think I can find someone with a set installed already. Though most are going for the Flex-Z so far.

BTW The Flex Z I tested was riding on 255/40/17 595RSRR tires, so it as a lot of grip.

[CSG Mike]

Originally Posted by solidONE

... alright mike kang. decreasing the rate of of compression doesn't keep it off the bumpstop in a corner where the compression dynamically increases (not static).

It's not like I'm the only person with access to these dampers. I invite anyone to test the setting yourselves.

"while valiant, is incorrect" lmao... what a db...

Everyone else reached a different conclusion from you

I'm not sure why you're trying to do "performance driving" with the Flex-Z. I've said it before and I'll reiterate here: these are not really meant for someone that's looking for extreme cornering performance, nor are they made to be paired with fat, sticky tires. The Flex Z is a great value for someone who wants to lower their car, clear wider wheels, and do some casual driving, not "hardcore canyoning" or tracking.

[solidONE]

Originally Posted by CSG Mike

Everyone else reached a different conclusion from you

I'm not sure why you're trying to do "performance driving" with the Flex-Z. I've said it before and I'll reiterate here: these are not really meant for someone that's looking for extreme cornering performance, nor are they made to be paired with fat, sticky tires.

Who is "everyone else?" Mike Kang and Mike Kang? lmao

So what are the Mike Kang settings, Mike Kang?

[chaoskaze]

Originally Posted by CSG Mike

Everyone else reached a different conclusion from you

I'm not sure why you're trying to do "performance driving" with the Flex-Z. These are not really meant for someone that's looking for fantastic cornering performance.

Different stroke for different ppl mike, I been wanting a US spec Tein A since before anyone on this side of the pond knows about them.
Either you guys man up & get a US sepc Tein A here (like you did with the Z) or stop promoting Tein Z in a Tein A thread...

Thank you?

[CSG Mike]

Originally Posted by chaoskaze

Different stroke for different ppl mike, I been wanting a US spec Tein A since before anyone on this side of the pond knows about them.
Either you guys man up & get a US sepc Tein A here (like you did with the Z) or stop promoting Tein Z in a Tein A thread...

Thank you?

I totally agree, @solidONE is bashing a product for not doing something it was never designed to do...

[solidONE]

"bashing a product" says the person who does the most bashing on these forums.... Where did I bash.. stop trolling. I know you don't have better things to do, but just stop.

[mkivsoopra]

Originally Posted by solidONE

lmao... what a db...

Mike the database!

[Trettiosjuan]

Originally Posted by solidONE

Sound like this is worth the extra over the Flex Z. I've thrown around a flex-z equipped FRS at 5 clicks out and the damping, particularly in the rear, felt lacking. It would wallow during hard cornering (from lack of damping). With it jacked up to -1 from full stiff it was a little better. If those hydraulic bump stops works as you describe, then it would probably not have the same problem. Although this is the only complaint I'd have. Over the rough stuff and for normal driving it's soooo compliant. I don't think you can get anything better for the $800 price tag of the Flex-Z. that extra $250 for the extra compression damping at the end of the stroke is probably worth it, I think. I'd have to try for myself to be sure though.

Not sure. If wallowing is the suspension riding the bumpstop, then perhaps so, as the HBS won't have the return jolt of the compressed rubber bumpstop releasing its energy.

But if your cornering very hard on high grip, the HBS can't compensate for lack of roll stiffness (too low spring rate or sway bar stiffness) that compromises the bump travel.

How much bumpstop-free bump travel is there on the Z front/rear? If it is anything like the A where there is a full 1" more travel at the rear, I would expect problems in front first....