What size shock spring do I need?

For example, if your shock stroke is 2″, your max spring free length is 130mm and your spring rate is 450lbs, you need a spring that is 2.25″ x 450Lbs x 125mm (if you don’t see a spring that has the exact stroke of your shock you can use a spring with a longer stroke, as long as the free length will fit).

How do you calculate coil springs?

To calculate the amount of spring rate you will need on order to meet your working loads, simply divide the load you will be applying on your spring by the distance you expect your spring to travel or compress under that load. The equivalent to that formula will be your compression spring rate as shown below.

How do you calculate spring suspension?

How To Calculate Spring Rates

1. L = Free Length of The Unloaded Spring (m)
2. G = Shear Modulus of Rigidity of Material.
3. d = Wire Diameter (m)
4. D = Mean Diameter (m)
5. N = Number of active coils (an active coil sweeps one full circle)

What spring rate do I need dirt bike?

Right out of the box your spring rates are usually set for someone of average size — this typically means 75 to 80 kilos or 165 to 176 pounds. If you are lighter or heavier, that spring rate won’t perform as well for you.

How do I choose a spring rate?

The softer rate will generate a smoother ride while the stiffer spring will result in a firmer ride. You need to consider these options when you are selecting the proper spring rate for your application. Springs should typically be compressed 25-30% of the free length when supporting the weight of the vehicle.

What is shock spring rate?

Spring rate refers to the amount of weight that is needed to compress a spring one inch. per inch spring – it will compress 1″ when a 200 lb. load is placed onto the spring. If another 200 lbs. is put onto the spring, the spring will compress another inch.

Is higher spring rate better?

See all 13 photos Your springs’ rate—the amount of weight required to compress themselves a single inch—should be settled upon before getting too far into suspension upgrades. Get it right and you’ve just improved handling and grip. The bigger the number, the stiffer the spring.

How do you calculate spring?

As per the Hooke’s Law, if spring is stretched, the force exerted is proportional to the increase in length from the equilibrium length. The formula to calculate the spring constant is as follows: k= -F/x, where k is the spring constant. F is the force and x is the change in spring’s length.

How is fork spring rate calculated?

To figure the spring rate KG / mm divide the mass of the weight by the difference in fork length in mm. For me it was 20.4 kg divided by 57.15, which equals . 356 kg/mm.

How do you calculate spring weight?

Calculate Wire Length

1. – Determine Mean Diameter (D) Add one wire diameter to the inner diameter or subtract one wire diameter from the outer diameter.
2. – Multiply mean diameter (D) by 3.1415 (Pi).
3. – Multiply #2 by total number of coils (N) add two coils (hooks).
4. – This figure equals the number of inches in the spring.

What are straight rate shock springs for Husqvarna?

Our straight rate shock springs for linkage KTM & Husqvarna models are cold wound on computer controlled (CNC) equipment to achieve perfect fitment and precise spring rates. Finally they are heat tempered, shot-peened, end-ground and pre-set for ultimate durability. Manufactured with high quality chrome silicone wire. How-to Video…

Are there straight rate shock springs for linkage?

Your garage is empty. How-to Video… Our straight rate shock springs for linkage KTM & Husqvarna models are cold wound on computer controlled (CNC) equipment to achieve perfect fitment and precise spring rates. Finally they are heat tempered, shot-peened, end-ground and pre-set for ultimate durability.

How can you tell the SAG of a shock spring?

Push up & down allowing the the shock spring/air pressure to push your weight back up until it settles. Now get your friend to measure the eye to eye of the shock (distance between the shock mounting bolt centres). Check this distance with the table below to see if you have the correct sag.

Do you need a spring calculator for your bike?

If you need a new spring or advice on the selection of the correct one see spring calculator or call with details of your bike, style of riding & your weight. Air Rear Shocks: To increase your sag reduce the main air spring pressure. To reduce sag increase the main air spring pressure.