Spring Comparision
would you happen to know the drop and specs on spoon progressive springs?(in inches)...thanks
You are 100% correct rabbitron!
I did not think that further explanation was needed since I was talking about oversteer. Oversteer only comes to play during cornering.
Thank you for bringing it up kenchan. It definitely deserved to be explained in detail. My bad!
Progress is the choice to go with if you are not going to AutoX, Road race or take canyons like devil himself was chasing you. LOL! It will give you greatest cruising comfort with least bouncy ride as long as you are not carrying lot of cargo weight and/or 2-3 rear passengers. In that case pick a brand with higher rear spring ratio.
Here is the spreadsheet sorted by "front to rear stiffness ratio".

I find it easier to start from there for the sake of balance and then compare spring stiffness among manufacturers.
One thing I find amusing is that both Eibach and H&R refused to disclose spring rates considering both Eibach Pro Kit and H&R Sport Kit have identical drop! ROFL! Is it being manufactured in the same facility?!
Email me if you would like me to send you the spreadsheet.
Ivan
p.s. I wonder if picking softest front spring, stiffest rear spring and addition of Progress rear sway bar would make an impact on the drift competition? LOL! Just kidding!
I did not think that further explanation was needed since I was talking about oversteer. Oversteer only comes to play during cornering.
Thank you for bringing it up kenchan. It definitely deserved to be explained in detail. My bad!
Progress is the choice to go with if you are not going to AutoX, Road race or take canyons like devil himself was chasing you. LOL! It will give you greatest cruising comfort with least bouncy ride as long as you are not carrying lot of cargo weight and/or 2-3 rear passengers. In that case pick a brand with higher rear spring ratio.
Here is the spreadsheet sorted by "front to rear stiffness ratio".

I find it easier to start from there for the sake of balance and then compare spring stiffness among manufacturers.
One thing I find amusing is that both Eibach and H&R refused to disclose spring rates considering both Eibach Pro Kit and H&R Sport Kit have identical drop! ROFL! Is it being manufactured in the same facility?!
Email me if you would like me to send you the spreadsheet.
Ivan
p.s. I wonder if picking softest front spring, stiffest rear spring and addition of Progress rear sway bar would make an impact on the drift competition? LOL! Just kidding!
Last edited by c.ase; Apr 24, 2009 at 01:40 AM.
also note that these are progressive rate springs...meaning, they have
initial and full compression rates and many variable rates in between.
those numbers are to be used only as a guide... there is no indication
whether those are initial or full or just averages.
if you see a rate like 500lbs, you know they are very stiff.
if you see 2 different rates from the same manufactuer then
you can tell which are stiffer as they probably (assuming)
used the same measuring method(s).
2 different rates from 2 different manufacturers.... you can only
guess.
initial and full compression rates and many variable rates in between.
those numbers are to be used only as a guide... there is no indication
whether those are initial or full or just averages.
if you see a rate like 500lbs, you know they are very stiff.
if you see 2 different rates from the same manufactuer then
you can tell which are stiffer as they probably (assuming)
used the same measuring method(s).
2 different rates from 2 different manufacturers.... you can only
guess.
I was thinking about the S.Techs cause I like the drop but not the spring rate, too stiff. I like the spring rate on the Preogress's but not enough drop. It seems like the Tanabe DF210's fall right in between. If I ever get springs, it will probably be those. They have the Tein Drop but a softer spring rate.
Based on all the science of spring rates etc... can the techies out there state which spring they feel is best with the stock dampers. I was considering the swift or the teins
I dont have the scratch for a coil over system right now.
I dont have the scratch for a coil over system right now.
I am hoping like hell that Swift Mach Springs are the best. Minimal drop, lots of travel less coils to prevent binding..... I did the severe drop thing on a V.W. Rabbit many moons ago and really screwed that little car all up by doing so.... As soon as the weather is a little warmer I will put the Swift Machs on my Fit.









