s14unimog

Ran across this on a local forum; anybody running one of these?






Apparently its a little shop down here in Georgia called Fat Cat Fabrication

"The Track Cat" Nissan 240sx S13 Rear Suspension System

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ka-titties

those things dont do shit.

MandTPhotography

Well that looks...interesting.

WagDatto

Is that an actual cantilevered coilover setup? Or is it just coilovers mounted to a trunk strut brace?

It LOOKS like it's the actual suspension, which would mean it'd work just fine, but even on the web site, it doesn't show much detail...

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s14unimog

It actually supposed to be a cantilevered coilover setup. I've followed along with the thread on the local forum and one of the guys has apparently seen it in person. I'm sure if anyone interested they could give him a call. I have an S14 so...





You're an idiot...

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Def

Been discussed a bit on Nissan Road Racing - my vote is stupid "race car" bling. The benefits are ridiculous, and the chance of those dampers being properly valved for the motion ratios and spring rates involved is pretty low.

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g-via

definite repost on zilvia...

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meow ....lol remind's me of this FIT from SS
Extreme Dimensions 2007 Honda Fit Interior View Honda Cbr 600Rr Shocks Photo

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g-via

you don't understand how suspension works yet.
please, study.

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udon!

rather have M I R A C L E X .

last time i came accross that online it was like $900

ka-titties

post counts dont represent actual knowledge, remember that.

like i said before, but this time with a little more detail.

that specific part for the s13 chassis doesnt do shit.

WagDatto

It's not just a rear strut brace. The rear struts apparently travel up through the top of the strut tower and triangulate that pressure down through the coilovers mounted to the strut brace. At least... that's what I'm assuming.

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ka-titties

that is a very accurate assumption. what they need to show is that there is a suspension "push rod" that comes from where a coilover would normally go to make the springs/struts they put there usable.

either way, i'm with Def.

Z28ricer

Ok so its been discussed on nissanroadracing, but realistically, whats the probability of it at least being on par with some good typical coilovers ?

MavericStephenc

first you'd have to determine what a "good typical coilover" is.

however as to the comments that this suspension setup is usless.... read a damn book, hell look at the guys in the little known race series F1. this suspension design has proven itself time and time again. and the physics behind it I don't know ( haven't found the info yet).

but before you bash on me I'm not saying the track cat is a god send when it comes to suspension tuning, and I'm also not saying that this specific example is built the way it should be. I simply don't know. however that type of suspension setup is tits.

Stop shooting down shit you don't understand.

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Def

I understand it(probably better than most here), and still say it's 100% useless.

Pushrod suspensions are used in Formula cars for packaging/aero reasons. Fast door slammers use nice dampers mounted in the normal location(in the wheel well).

Very slightly reduced unsprung weight is stupid at the expense of probably 40+ lbs way up high in the chassis.

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S14DB

I saw this a couple months ago when someone familiar with their honda applications showed me they came out with this.

Cantilever set up is good when you want a lot of shock travel with little wheel travel. Damping really heavy spring rates.

These seem to be motorcycle rear shocks designed for a vehicle with a lot less weight. I don't see how they could manage the weight of a car. Also, what do you run at the front of the car? Not going to be a balanced setup in travel, damping and spring rate.

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Def

Except the motion ratio between the wheel and shock is REDUCED very clearly in this "awesome setup."

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atutt

What is purpose of this set up?

MavericStephenc

by the looks of it this guys has no need for the cantilever setup however I still don't see how it could be a complete waste... having a cantilever setup frees up a lot of room from what I understand, and its benefits are minimal at least.
as for the weight, how much are we really adding?
removing the stock shock and spring.....20 pounds? tops? (each side)* correct me if I'm wrong here*
installing the push rod setup including the cantilever pivot and coil......for shits lets say 25 tops. (each side)
being that its only in there rear that's a net gain of 10 pounds (estimated) * I dont include the rear brace/mounting system because half of us have some sort of rear brace or some bar so I don't see how it could be held against the setup.
if it were a track car than there would be other ways to shed the weight to make up for the suspension.
in this specific setup the benefits of the altered suspension geometry outweigh the added 10 pounds.

he may want to fit some super hot wheels, or likes the benefit of a cantilever, who knows.
but it still remains the same mabye not for this specific app. but cantilever had been proven. it may not be for the street but on the track it performs.




I'm going to e-mail them though and see if i can get a dyno on the coils

I very much agree.

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Z28ricer

THIS,


That was sorta my reason for considering it, however after looking at the pictures more I realized its not going to fit under the stock privacy cover.

I was considering using it in hopes of fitting wheels with enough backspacing to get some 275/40/17's under the rear of my S13, without any sort of poking out or rubbing.

S14DB

I wonder if they even calculated the ratio?

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brndck

hey, i'm just glad to see that people are still developing new products for s-chassis.
even if this version isn't practical, maybe v2 or v3 will be an improvement....

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Def

You can fit 275/40-17s on an S13 if you get a +35 or +40 wheel and roll the fender lips. That tire size totally sucks though, feels like driving on marshmellows. Give me a 255/40-17 over that anyday.

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Def

Have you guys even looked at your rear suspension? The average coilover is almost completely contained inboard of the rear wheel well.

I guarantee you that bent bar is way heavier than the average eBay strut bar that most S-chassis guys run to handle all the suspension loads.


You guys are ridiculous. You don't even have the faintest idea of why you'd really want a setup like this, and what would make it actually good. You just see something "neat" and get all butthurt when anybody logically critiques it. :ghey:

And do you even know what you'd be looking at on a damper dyno?

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Z28ricer

I'm not going to be willing to do a pull, i'll be cutting away as much of the lip as possible reasonably, and definetly would gain clearance using this suspension setup for additional offset/backspacing, as far as the tire size sucking, this will be for weekend use at the drag strip, and the availability of nice drag radials in 255 17" doesnt really exist, not to mention i'll be able to make use of a 275

ThatGuy

He said roll, not pull.

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ericcastro

dont cut your lip.
thats gonna lead to headache and weaker metal along the edge there.
do like they said and roll it.
totally different than a pull, but both useing similar techniques so the confusion is understandable.

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Otto347

For what? You dont need it on an S13. I though of doing this same basic style setup on my S13 but then realized there is no need for it at all. Not to mention they could have used a real set of coilovers rather than some motorcycle shocks.

edit: Just noticed also those pivot deals on the stock shock mount side look awful close to the blue contraption. If the car is sitting at ride height with the suspension loaded then one dip or bump and when the suspension rebounds................no good will happen.

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Def

The gearing sucks with 275's and a KA/SR unless you've got a 4.36 diff(or shorter). Been there, done that.

Oh well, glad to see at least a few people realizing this is a pretty ridiculous "mod" that doesn't look like it has much thought or engineering put into the finer points.

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