Spring Rates/Drop rate

[SamuraiSi]

anyone ever try the Megan Racing springs? i didn't see those on the list.

http://www.meganracing.com/product_d...d=467&catid=44

[i_love_my_ep3!]

someone please clear up this mess ive read this tread and got no where lol no offense.

[PatrickJamesYu]

this first page is pretty explanatory, no?

[makavelibranded]

someone please clear up this mess ive read this tread and got no where lol no offense.

everything you need is in the 1st post

[PatrickJamesYu]

Ok I been reading this stuff and I am so lost. I'm looking for coilovers that give me a drop of 2.5inch. And are great for daily driving. What do you guys recommend? Thanks.

All coilovers will allow this drop
with their adjustable height it's usually about 3 inches at most.
Some can dump it at like 4

[lemonhead228]

i bought a set of use mugen ss without springs. you guys think the tein s springs be a good replacement?

[Zzyzx]

Consider you have 2 springs having different spring rates: One with 345 and the other with 480. So what does it mean?

It means the 1st spring will compress 1mm if you put a load of 345 grams, while the 2nd one will not. The 2nd one will need a 480 g. load to compress 1mm. According to this, we can say that the 2nd spring is harder than the 1st one, or we can state that:

Springs that have a low Spring Rate are soft, while springs that have a high Spring Rate are stiffer.

Kind of... while the concept you posted applies to a springs in general, once they are attached to a car it really stops meaning anything useful. To get better data we have to take in to account both the motion ratio of the suspension that the spring is attached to as well as how much weight that suspension is holding. The 1st one gives you whats called "wheel rate" which is the effective spring rate acting at the contact patch of the tire. It will be, in nearly all cases, Less then the springs normal un mounted rate. the one time it can be greater is with cantilevered suspensions, such as those found on F1 cars. On this car the front motion ratio is ~.9 where as the rear motion ratio is ~.5... which means that only 90% of the front springs actual rate gets used; so if your front spring rate is 345 then your wheel rate is 345x.9= 310. Alternately on the rear where the motion ratio is .5 your 480 spring rate drops to a 240 wheel rate....
So while initially the front spring is "softer", when put on the car the front end actually ends up with the functional stiffer spring. And we haven't even taken weight supported in to account.

[DynamiteRoll]

Kind of... while the concept you posted applies to a springs in general, once they are attached to a car it really stops meaning anything useful. To get better data we have to take in to account both the motion ratio of the suspension that the spring is attached to as well as how much weight that suspension is holding. The 1st one gives you whats called "wheel rate" which is the effective spring rate acting at the contact patch of the tire. It will be, in nearly all cases, Less then the springs normal un mounted rate. the one time it can be greater is with cantilevered suspensions, such as those found on F1 cars. On this car the front motion ratio is ~.9 where as the rear motion ratio is ~.5... which means that only 90% of the front springs actual rate gets used; so if your front spring rate is 345 then your wheel rate is 345x.9= 310. Alternately on the rear where the motion ratio is .5 your 480 spring rate drops to a 240 wheel rate....
So while initially the front spring is "softer", when put on the car the front end actually ends up with the functional stiffer spring. And we haven't even taken weight supported in to account.

WOW I actually get that!

[Eddie Murphy]

What are the spring rates and drop rates on the RSX-S A-Spec Suspension Kit for 2002 - 2006?

[Hasbro]

What are the spring rates and drop rates on the RSX-S A-Spec Suspension Kit for 2002 - 2006?

3/4"

Rates are evasive. Somewhere in between the RSX and Mugen, I would say;

Stock EP3: Spring Rate: (248 Front/440 Rear)
Stock RSX: Spring Rate: (279 Front/458 Rear)
Mugen: Spring Rate: (283 Front/439 Rear) Drop: (1.4in all around)

[poeticfinesse21]

What are the spring rates and drop rates on the RSX-S A-Spec Suspension Kit for 2002 - 2006?

There's actually two different A-spec kits. One for the 02-04 RSX and one for the 05-06 RSX. The 05-06 kit has reversed springs in the front and is assumed to be slightly stiffer. Acura has never officially released the spring rates so no one know for sure. The only thing that is certain is that the springs are progressive meaning that they are somewhat soft under normal load and get progressively stiffer as they compress. I assume that the A-spec spring rates for the 02-04 kit are very similiar or maybe even identical to the 02-04 DC5 Type-R spring rates which are:

2.8 to 4.6kgf/mm front
3.0 to 8.0kgf/mm rear

I haven't been able to find the spring rates for the 05-06 DC5-R.
There's a lot of speculation that the A-spec kit is just rebadged Type-R suspension for the US market.

[Hasbro]

I would agree only from what I've read that they are the same. I happen to have early A-Spec springs and RSX dampers that I keep threatening to sell... very nice condition.

[Hasbro]

This is an old list. I've had it for 5 or 6 years and it was older than that. Don't know the original author's name. It has numbers I haven't seen anywhere else.



Spring Rates/Drop rate
[Springs]
Stock EP3: Spring Rate: (248 Front/440 Rear)
Stock RSX: Spring Rate: (279 Front/458 Rear)
UKDM/ JDM Stock EP3 Type R (257 / 419.10) Progressive
02-04 ITR DC5 3.7k front, 7.4k rear (207.19lbs/in front & 414.38lbs rear)
05-06 ITR DC5 4.6k front, 8.5k rear (257.59lbs/in front & 475.98lbs rear)
Dropzone: Spring Rate: (? Front/? Rear) - Drop: (2in all around)

Eibach Pro-kit: Spring Rate: (15-20% more than stock) - Drop: (1in Front/1.1in rear)

Eibach Sportline: Spring Rate: (20-25% more than stock) - Drop: (1.4in Front/1.5in Rear)

H&R Sport: Spring Rate: (25-30% more than stock) - Drop: (2in all around)

Neupseed Race: Spring Rate: (200 Front/280 Rear) - Drop: (2in all around)

Neupseed Sport: Spring Rate: (200 Front/280 Rear) - Drop: (1.5in Front/1.5in Rear)

Progress: Spring Rate: (280 Front/500 Rear) - Drop: (1.8in Front/1.5in Rear)

Sprint: Spring Rate: (20-25% more than stock) - Drop: (2in all around)

Spoon Progressive: Spring Rate: (413 Front / 458 Rear) - Drop: (1.5-1.7in all around)

Tanabe df210: Spring Rate: (10-15% more than stock) Drop: (2in Front/2.3in Rear)

Tanabe nf210: Spring Rate: (10-15% more than stock) Drop: (1.5in all around)

Tanabe gf210: Spring Rate: (20-30% more than stock) Drop: (1.3in Front/1.5in Rear)

Tein H Tech: Spring Rate: (257 Front/476 Rear) Drop: (.8in Front/.7in Rear)

Tein S Tech: Spring Rate: (280 Front/515 Rear) Drop: (1.4in Front/1.3in Rear)

[Ground Controls]
Dropzone: Spring Rate: (? Front/? Rear)

Ground Control EP3 kit: Spring Rate: (375 Front/450 Rear)

Skunk2 Coilovers: Spring Rate: (440 Front/330 Rear)

[Full Coil-overs] Spring & Shock (fixed height)

Mugen: Spring Rate: (283 Front/439 Rear) Drop: (1.4in all around)

Honda Factory Performance: Spring Rate: (? Front/? Rear) Drop: (?in all around) - very similar to the mugen kit, awaiting specs

[Full Coil-overs] Spring & Shock (adj height)

Buddy Club Racing Spec: Spring Rate (559 Front/894 Rear) (Adj ?? min - ?? max)

JIC FLT-A2: Spring Rate: (504 Front/560 Rear) Drop: (Adj stock - 3.5in max)

KW V2: Spring Rate: (340 Front/515 Rear) Drop: (Adj 1.4in min - 2.6in max)

Progress C1: Spring Rate: (350 Front/640 Rear) Drop: (Adj 1in min - 4in max)

Tein Basic: Spring Rate: (336 Front/448 Rear) Drop: (Adj ?? min - ?? max

Tein Type Flex: Spring Rate: (448 Front/559 Rear) Drop: (Adj ?? min - ?? max)

V2 Coilover kit from KW: Spring Rate: (340 Front/500 Rear) Drop: (Adj 1.4 min - 2.6 max)

More Coilover Set Rates

Buddy Club n+:
Spring Rate: 10k Front/14k Rear

Buddy Club rsd:
Spring Rate: 10k Front/16k Rear

D2:
Spring Rate: 8.7k Front/8.0k Rear

Form and Function:
8k Front/6k Rear

KW Variant 2:
6.1k Front/9.2k Rear

Megan Street:
8k Front/10k Rear

Megan Track (DC5 specific):
12k Front/16k Rear

Progress:
6.3k Front/11.6k Rear

Skunk2 Pro S:
12k Front/8k Rear

Tanabe Pro S:
6k Front/8k Rear

Tanabe Pro Type 2:
8k Front/8k Rear

Tien Basic:
6k Front/8k Rear

Tien SS:
6k Front/8k Rear

Tien Flex:
12k Front/14k Rear

Tien Flex (DC5 Specific):
14k Front/16k Rear

[conversion rates]
1 kg/mm = 55.88 lb/in
1 N/mm = 5.588 lb/in


[What is Progressive Spring Rate?]
Progressive rate springs are likely

[b_ron]

any way to tell if your dc5r is 02-04 or 05-06?

[Hasbro]

Iirc, 05/06 RSXes have the front right spring wound opposite of the other three.