Standard vs Progressive rate?
02-04-2007, 10:55 PM
#2
5th Gear Member
Join Date: Dec 2004
Location: In between Your Mom's Titties, skeet skeet..
Posts: 2,045
RE: Standard vs Progressive rate?
Progressive rate springs, are tapered in appearance. They are also designed, so that as the spring compresses, the Spring rate increases, to allow for a more manageable, and comfortable Street driven compromise. Personally, I don't like the idea of progressive rate springs on a track car, but that's just me..
Standard rates are just a single spring rate, no matter what..
JT
Standard rates are just a single spring rate, no matter what..
JT
02-05-2007, 12:15 PM
#5
2nd Gear Member
Join Date: Jun 2006
Location:
Posts: 229
RE: Standard vs Progressive rate?
ORIGINAL: wes ley n the G T
Usually more comfortable for street driving yes, but I'd rather solid constant performance over a little better ride comfort. Thats my opinion though.
Usually more comfortable for street driving yes, but I'd rather solid constant performance over a little better ride comfort. Thats my opinion though.
02-05-2007, 12:32 PM
#6
corner carver
Thread Starter
Join Date: Oct 2006
Location: New England
Posts: 4,371
RE: Standard vs Progressive rate?
The majority of my driving is just driving around my town that I live in. It is a smaller town. They call it a city but it is really small. The roads vary from neighborhoods to long wide open cruising roads. This is not my daily driver, it is my fun car that I will be driving around for fun spring through fall. It won't see highway or anything like that.
Which type of spring do you guys think I should use? I don't want a ridiculously bumpy ride, but I want some better handling and a lower look.
Which type of spring do you guys think I should use? I don't want a ridiculously bumpy ride, but I want some better handling and a lower look.
02-05-2007, 01:19 PM
#8
5th Gear Member
Join Date: Apr 2006
Posts: 3,625
RE: Standard vs Progressive rate?
ORIGINAL: dlazrael
might be dumb Q, but are frpp c springs standard or progressive?
might be dumb Q, but are frpp c springs standard or progressive?
I know Summit Racing has those and you should check out their website as it will tell you that. Also I have BBK 1.5 up front and they compress evenly around turns(exact pressure throughout the spring), but I think everyone is getting confused about Progressive rate. If it takes the first 1" of the spring to compress at 1,000lbs of presure, the 2nd takes 2,000lbs and the third 3,000lbs and so forth.(just rough numbers, no exact figures) The spring should compress instantly with no delays. The whole idea behind Progressive Rate is for cornering and so you don't have body roll. They are very rough for around town use, not smooth at all! I put specific rate up front and progressive out back because when you lower your car in the back it tends to bottom out on city roads more often, so Progressive rate makes it a little harsher, but it doesn't bottom out. Also with the progressives out back they stop the body roll out back. I'm sure they say you shouldn't do this in their "manual", but if you know your car and depending on the set-up and what you use it for are all factors.
02-05-2007, 02:25 PM
#10
2nd Gear Member
Join Date: Jun 2006
Location:
Posts: 229
RE: Standard vs Progressive rate?
ORIGINAL: 97targa
I know Summit Racing has those and you should check out their website as it will tell you that. Also I have BBK 1.5 up front and they compress evenly around turns(exact pressure throughout the spring), but I think everyone is getting confused about Progressive rate. If it takes the first 1" of the spring to compress at 1,000lbs of presure, the 2nd takes 2,000lbs and the third 3,000lbs and so forth.(just rough numbers, no exact figures) The spring should compress instantly with no delays. The whole idea behind Progressive Rate is for cornering and so you don't have body roll. They are very rough for around town use, not smooth at all! I put specific rate up front and progressive out back because when you lower your car in the back it tends to bottom out on city roads more often, so Progressive rate makes it a little harsher, but it doesn't bottom out. Also with the progressives out back they stop the body roll out back. I'm sure they say you shouldn't do this in their "manual", but if you know your car and depending on the set-up and what you use it for are all factors.
I know Summit Racing has those and you should check out their website as it will tell you that. Also I have BBK 1.5 up front and they compress evenly around turns(exact pressure throughout the spring), but I think everyone is getting confused about Progressive rate. If it takes the first 1" of the spring to compress at 1,000lbs of presure, the 2nd takes 2,000lbs and the third 3,000lbs and so forth.(just rough numbers, no exact figures) The spring should compress instantly with no delays. The whole idea behind Progressive Rate is for cornering and so you don't have body roll. They are very rough for around town use, not smooth at all! I put specific rate up front and progressive out back because when you lower your car in the back it tends to bottom out on city roads more often, so Progressive rate makes it a little harsher, but it doesn't bottom out. Also with the progressives out back they stop the body roll out back. I'm sure they say you shouldn't do this in their "manual", but if you know your car and depending on the set-up and what you use it for are all factors.
ProgressiveRate Springs: Spring rate variesthorughout the coils (lower rate on bottom and increases towards top), smoother ride over specific rate springs, "softer" handling, great city/highway driving.
Specific Rate Springs: Same spring rate throughout the spring, slightly harsher ride over progressive rate springs,quicker response todirection changes, stiff handling, great for corner carving.
BTW. FRPP "C" Springs are Specific Rate, FRPP "B" Springs are Progressive, BBK's you can get in either Specific (what I have) or Progressive Rates.
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