# What factors affect the rate of a coil spring?

You must remember, however, the only factors that affect spring rate are wire diameter, mean diameter, number of active coils. How Spring Rates Change Dynamically: Keep in mind that as a coil spring compresses, the inactive (dead) end coils gradually contact adjacent, active coils.

Spring rate refers to the amount of weight that is needed to compress a spring one inch. If the rate of the spring is linear, its rate is not affected by the load that is put on the spring. For example, say you have a 200 lb. per inch spring – it will compress 1″ when a 200 lb. load is placed onto the spring.

Furthermore, what is spring rate formula? Spring Rate Formula Rate = Load ÷ Travel. k= L ÷ T. k = 15 ÷ 2. k = 7.5 lb/in.

Hereof, how does number of coils affect spring constant?

When the number of coils and coil diameter of a spring is large, that is, when the length of material increases, the spring constant becomes smaller. The same principle explains the effect with spring constants you described.

What is the formula for calculating spring rate?

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.

### Is higher spring rate better?

Spring Rate refers to the amount of weight it takes to compress a spring a certain distance. The higher the spring rate, the stiffer the spring. Some springs are non-linear, which typically means the spring gets stiffer the more you compress it.

### What is spring constant k?

k is the spring constant, in Newtons per meter (N/m), and x is the displacement of the spring from its equilibrium position. The spring constant, k, is representative of how stiff the spring is. Stiffer (more difficult to stretch) springs have higher spring constants.

### Does cutting a spring make it stiffer?

The first thing you need to know is that cutting a coil spring will not only lower the vehicle, but it will also stiffen the spring making the ride and handling a bit firmer. But this is a good thing because lowering a vehicle reduces the amount of suspension travel. A stiffer spring will help reduce bottoming out.

### How can the stiffness of a coil spring be increased?

Spring stiffness is based on spring rate . If you lower the amount of coils, you’ll increase the spring stiffness which is the spring’s rate. If you adjust the outer diameter or the wire diameter, you will affect spring’s force and stiffness as well.

### What makes a good spring?

Springs are made from a variety of elastic materials, the most common being spring steel. Some non-ferrous metals are also used including phosphor bronze and titanium for parts requiring corrosion resistance and beryllium copper for springs carrying electrical current (because of its low electrical resistance).

### How do you make a spring less stiff?

Only two ways of doing it. Either grinding it thinner, or adding a coil or two, then heating it at red to orange heat. Then heating to critical temperature and quenching to harden it, and then tempering it back to spring quality.

### How do you fix a heated spring?

Steps Use a putty knife to separate one coil from the rest of the spring. Ignite the Bernzomatic TS8000, and slowing apply heat to the single coil, heat until the coil is cherry red. Using the pliers, bend the coil to match the other end of the spring.

### What does 8k spring rate mean?

What does it mean when they say 8K or 500lb Spring Rate? When someone says “8K” they are shortening the metric measurement of the spring rate; in this case 8 kg/mm. What this means is that if you apply 8 kilograms of weight to the top of the spring it will compress 1mm.

### What is a good spring rate?

The weight balance between the front and rear of a vehicle can range widely from 50%/50% (Front/Rear) to 60%/40% (Front/Rear). If you’re guessing blindly, use a 55%/45% weight balance; however, it is much more appropriate to measure your car.