Coil Spring Standard Dimensions

[MrStabby]

I'm replacing my current coils with a softer rate, and I need more ride hight so ill get longer as well.

My coils are;

~195mm free height

~72mm ID at the perch

~98mm ID at the top

What are the standard sizes? I'm guessing they were originally 200mm and have sagged a bit, but what are the next steps up in terms of length? The perches were wound up to their full height (threads have 60mm of travel), and the car was still 10mm too low, so i need a compressed length of 40 mm longer, to get the adjuster in the middle, so the free length will need to be longer again.

Also - anywhere recommended to buy them, or will I just get Heasmans to order them in for me.

[niZmO_Man]

Front

Spring constant: 23.5 N/mm(2.4 kg/mm, 134 lb/in)

Free length right/left: 405 mm (15.94 in)

Coil average diameter: 110 mm (4.33 in) low side 80 mm (3.15 in)

Wire diameter: 12.3 mm (0.484 in)

Number of active coils: 7.92

Stabiliser outer diameter (non-solid): 20 mm (0.79 in) [same size as tension rod dia].

Rear

Spring constant: 26.5 N/mm(2.7 kg/mm, 151 lb/in)

Free length right/left: 345mm (13.58 in)

Coil average diameter: 100 mm (3.94 in) low side 90 mm (3.54 in)

Wire diameter: 11.8 mm (0.465 in)

Number of active coils: 7.29

Stabiliser outer diameter (non-solid): 25.4 mm (1 in)

[MrStabby]

Doh - sorry i mean standard sizes as in what lengths would they make in a spring that I could use in place of the ones i've got. Eg.since i have 200mm, will they make 220 240 260 etc or is it just whatever that particular manufacturer decides to make?

[djr81]

Overwhelmingly it is what they choose to make. Commonly next up is a 250 long spring but they may do something in between. Do they not have a cattledog you can look at?

[MrStabby]

Yes djr i finally found some tein tapered springs are still available (after Fulcrum told me they werent). Ended up ordering 250mm from nengun.