Spring rates conversion

[Mikecivic78]

Some of you have seen this spring rates table on US Honda-tech.com

How can you convert these to kg? What's the formula?


here are some rates, just an fyi
For 96-00 Civics (EJ6-8 and EM1 chassis codes)
Stock
96-00 EX - 165F/80R (P/P)
99-00 Si (EM1) - 201F/99.8R (P/P)
97, 00-01 ITR - 250F/250R (L/P)
GS-R - 200F/95R (P/P)
CTR - 240/240 (L/P)
Aftermarket
H&R OE - 280F/190R (P/P)
Eibach ProKit - 290F/190R (P/P
H&R Sport - 330F/280R (P/P)
Eibach Sportline - 310F/275R (P/P)
Gold-line GL 2.5" drop - 320/190 (P/P)
Gold-line GPS 1.25" drop - 275/160 (P/P)
Koni RSK Suspension kit - 154-205/270 (P/L)
Neuspeed SofSports - 260F/150R (P/P)
Neuspeed Sport - 280F/180R (P/P)
Neuspeed Race - 485F/395R
Skunk Coilovers -old - 400F/300R (L/L) for civic, 500F/400R for integra
Skunk2 Coilovers - new - 500F/400r (L/L)
Spoon Full Coilovers - 300/240
Progress Coilovers - 350F/250R (P/P)
Progress Lowering Springs - 320F/200R (P/P)
Ground Control Coilover - 380F/280R (P/P)
Tein RA/RE/RS - 783F/559R (L/L)
Tein HT - 1119F/448R (L/L)
Tein HG - 365F/129-196R (L/P)
Tein SS - 448F/224R
Tein Flex - 504F/280R
Tein S. Tech - 235F/140R
Tokico Illumina Kit - 250/123 (P/P)
APEX'i WS - 447f/178r
SSR Cup - 392/280
SSR S1 - 448/448
JIC FLT-A2s - USDM - 504F/336R (L/L)

For 02+ Civic Si (EP3):
Progress - 280F/500R
Tein SS - 336F/448R
Tein Flex - 448F/559R
Tein S. Tech - 157F/291R

P = Progressive
L = Linear

[string]

They are in pounds per inch and you want kg per millimetre.

1 kg = 2.2 pound
1 mm = 1/25.4 inch

1 kg/mm = 2.2 pound / (1/25.4) inch = 2.2 * 25.4 pound/inch = 55.88 lb/in

Divide by 56.

[Mikecivic78]

Thanks string

So Eibach ProKit - 290F/190R = 5.17kg front and 3.39kg rear? Is that correct?

[beeza]

They are in pounds per inch and you want kg per millimetre.

1 kg = 2.2 pound
1 mm = 1/25.4 inch

1 kg/mm = 2.2 pound / (1/25.4) inch = 2.2 * 25.4 pound/inch = 55.88 lb/in

Divide by 56.

RePPed!