nunyas

iTrader: (2)

a spring rate of 3.5k lbs/in means that it takes 3.5k (3,500) lbs to compress 1 spring 1 in ...that's the whole car would only compress 1 spring 1 inch....

08Lancer89

iTrader: (15)

Awesome keep me posted on this and keep of the good work with all your projects

Jasoob

Yeah, definitely looking forward to this.

sstevojr

iTrader: (7)

Yes I realize that, what I meant was MOST after market springs are MORE firm than stock, so 1.5K would be bubble gum soft in comparison?

nunyas

iTrader: (2)

compared to full on coil-overs, yes.

compared to the stock springs, 1.5k lbs/in springs would be brutally stiff.

I suspect the stock springs to be in the neighborhood of 300lb/in, and H&R and RRM/Progress springs to be in the 350lb/in to 400lb/in range (in their stiff sections)... w/ Tein S-Techs in the 500lb/in to 600lb/in range (in its stiff section)...

nunyas

iTrader: (2)

seems the stock spring rates are very very soft... I just found these:


Tein S-Tech springs are 212lbs/in (fronts)
http://www.tein.com/products/s_tech_price_list.html

SWIFT springs are 225lbs/in (fronts):
http://www.tougetuning.com/store/swi...rt-p-1662.html

Tein Flex Coil-overs are 509lbs/in and Tein Basic coil-overs are 336lbs/in:
http://www.tein.com/price/mitsubishi.html

I suppose that information puts the front stock springs into the 175 - 190 lbs/in range...

and most lowering springs into the 200lbs/ing to 225lbs/in range for fronts...

sstevojr

iTrader: (7)

Which brings us back to my original statement:

FYI, we aren't using the same unit of measure. I don't think there is any such thing as 3500lb/in spring rate. SUPER stiff track springs are 16K which 896lb/in; so 3500 lb/in would be...62.5K kinda absurd ;p
When talking spring rates any "xx"K is kg/mm, not 1000's of lbs/in (we aren't compacting the car into a soda can, haha)

sstevojr

iTrader: (7)

^^ hey what do you know! 3.5K after all (~196 lb/in)

NFSLancerRA

iTrader: (8)

The RRM springs are 175. That is not going to cut it.

sstevojr

iTrader: (7)

With the RRM's do you notice an increase in rebound over bumpy road sections? I'd guess that a softer spring rate would cause that "bouncy feeling".
For the new shocks you are working on getting designed, if we can match a stiffer spring to the correct valving I think that would be money! Having had the BC BR's now for ~6 months I wish I had gotten increased springs rates (they re-valve before shipping based on the rates, and will re-valve after the fact for $95). I'm torn between selling these to someone who would like a "road/spirited driving" friendly set of coilover and upgrading, or getting new springs and getting them re-valved. Only concern is this sub-model isn;t really intended for that type of valving/spring rate combo. I would be better off with a set of ER's.....

NFSLancerRA

iTrader: (8)

How similar do you think the springs are between the RA and the Evo IX?

sstevojr

iTrader: (7)

Not the slightest clue
Are we talking stock spring rates, I could hunt that info down....

sstevojr

iTrader: (7)

The BIGGEST issue I have with the current RA coilovers is that they are designed after the Lancer GTS.
1) the power output is completely different
2) the strut piston NEEDS to be 1-1.5" (maybe even 2") longer

I had my suspension set-up by a well known shop in So-Cal (Westside) and I was having issues with the rear's bottoming over any type of bump. Dig in and find out the strut only has .5" of travel left just sitting still (so ANY bump, tree rot to pot hole, and you have maxed out the strut). That's my experience with them.
Until they design these FROM a RA rather than from a GTS FOR an RA, this won't be solved (the curb weight is almost 600 lb difference!)

NFSLancerRA

iTrader: (8)

I have that info.

EDIT: This was a dumb idea.

NFSLancerRA

iTrader: (8)

The stock rate of the X is 3.8K. The highest rate that I have seen is between 4.9 and 5.5 from GTWORX for the X. I wish that we could use those.