: Linear Spring rates in lbs on your BSP, or STU EVO X?


MAX SEAT TIME
02-09-2011, 01:02 AM
Hey all,

What spring rates are you running on your EVO X's with Coil Overs?

In pounds please....

Also if it is street driven what do you think of the ride?

THX in advance,
MAX

irmerm
02-09-2011, 01:50 AM
sub'd for answers.

Running mine in Tire B-Stock right now, but might wanted to upgrade suspension later.

MrAWD
02-09-2011, 01:19 PM
Hey all,

What spring rates are you running on your EVO X's with Coil Overs?

In pounds please....

Also if it is street driven what do you think of the ride?
MAX
I saw on the previous post that you are planning on using 4100 and along with the concern for the street use I would like to recommend you spend few extra bucks on better shocks and not worry that much about the spring rates. I would try to be somewhere around 500 pounds on the wheel (not spring) rates on my race car (maybe even more if it is race only car).

My DSM had 800/650 springs F/R and it was still OK on the street while I drove it that way, but I was younger and there was no family to haul around. Those numbers would get around 550 to 600 lb for the wheel rates for both ends.

But, the most important part of the equation were the triple adjustable Penske shocks. Previous setup with Bilistiens, was a bit softer spring wise (750/550 if I can remember correctly), but it was way harsher then the Penske setup. Before that I used GAB shocks with 650/450 and that was even harsher then either of later two. Lots of guys are/were running Koni shocks with 550/450 setups and it is also much harsher then my last two setups.

Finally, the point is that shock/strut is the major part that is in charge of the comfort of the occupants inside the car and of course handling. So, if you really want to have best of both worlds, get the best shocks money can buy. You would thank me lots of times later if you do so!! :)

Good luck!


Fedja

Jazzberg
02-10-2011, 05:39 PM
I went with the Tein Mono Flex. I run BSP, I got the Cheaper Coilovers so I can Keep buying new A6's. First full year for the EVO this year... It's fun. Any tips on Adjustment for Sways with the new coilover setup?

MrAWD
02-10-2011, 06:28 PM
There is no way any worthy suggestion could be given in your case without seeing the car run and you driving it! You could get some general recommendations, but for anything to the point there should be much more info available.

I could only tell you to make sure you are using as much tire as possible on all four corners and that tire temps are in order. So, any adjustment I would do with that having in my mind and that especially included nut behind the wheel!

Good luck!


Fedja

Jazzberg
02-10-2011, 06:59 PM
Just looking for some basics. New to Autox, This will be 2 nd full year 1 st was an MS3. Last year withou the coils, I ran Hotchkis bars Front full soft and the rear full stiff. Tore up the stock endlinks and I felt that an 8" Tripod on rear wheel was not the best way to get around the coarse.Went with med stiff on rear to get therear weel closer to the ground. Hence the coilovers.... What are your thoughts on this? Do I stay on Med for the back or go rite to the stiff again. 275/30/18 Hoosiers are what I run. any experianced input would help. Thanks, I hope to make it up to your region this year.

MrAWD
02-10-2011, 07:36 PM
Sway bars are there to help the springs control the car better and improve rolling without affecting the ride quality as much as with stiffer springs. But, with that said, not a single part of your suspension is meant to work as an individual unit, but rather as sum of all parts. There are also two distinctive school of thoughts on this subject, where one goes with stiffer bars and softer springs, while other guys like stiffer springs and smaller bars. They both work (according to the racing results), so it is up to every one of us to find the place to be in.

In your case, since you are playing with the sway bars, you need to try all the settings and see how the car feels to you! Unfortunately, if you are new to the autoX then you might not have a clear understanding on what is going on, which quite often could lead into the wrong directions and waste of time and money.

You could go with whatever feels right to you and go from there with small adjustments and hopefully improvement of your times. Slow and painful, but lots of fun!

Other option is to use someone who understand this stuff and get inputs for them on what needs to be done to you car, and even more importantly how it has to be driven.

I guess, combination of two is what I would recommend. Basically go with your gut feelings, but every once in a while (at a bigger - possibly National type - event with known good guys) check with a person that you can trust! AutoX community always had several good guys on any event around wherever you are from that you can get this info from.

One last recommendation is about trying to restrain your self from making too many changes too quickly. Even before that (I mean before you start to make changes to your setup), for anyone who wants to start setting up their cars, they need to learn basics of the car tuning. Things like what will car do if you increase/decrease tire pressure on one end. After that, there are more complex things like what happens to the car once you add more/less rebound/compression to one end of the car, weight transfer maintenance, and so on. But, all these things could be learned along the way while doing this and things could be helped form bunch of good books on the subject.

Now, to finally get back to this recommendation! AutoX (and possible any other type of racing) is based on your trust in your abilities and knowing how the car is going to react to your inputs. If you keep changing you car all the time, you will not be able to figure out what is your car and what is you! So, I think the best recommendation for anyone in this sport is to make sure you give your self enough time to learn your car and your self and then and only then start with modifications on your car by using baby steps. By baby steps I mean some smaller change on the setup and then back to testing by doing several runs. Of course, sometimes you could say right away that latest change that you did didn't really help at all and made things worst then before, which would require immediate correction in opposite direction. Also, people with more experience could make more modifications at the same time, but it takes years to get to that level. Even then, only at the early phases of tuning you could make bigger jumps, but after you get to the decent level only small/single changes would give good results.

Well, so much for generalization of the things in this sport, without saying anything concrete! :)

Hope this helped!


Fedja

Jazzberg
02-10-2011, 08:25 PM
Good Stuff.. Thankyou,