What is coil diameter spring?
The Mean Coil Diameter (D) of a spring is the Outside Diameter minus one wire diameter (d). And, the Mean Coil Diameter (D) is also the Inside Diameter (ID) plus one wire size (d). In spring design, the Mean Coil Diameter is used more for calculating the rate and ultimate stress in the spring rather than for fit.
What spring rate do I need?
Springs should typically be compressed 25-30% of the free length when supporting the weight of the vehicle. Drag race cars will normally use a lighter rate spring (about 30%) to promote weight transfer while a street car will use a firmer rate spring (about 25%).
What spring do I need for coil shock?
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).
What do spring rate numbers mean?
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.
How does coil diameter affect spring constant?
Spring constant is a measure of the stiffness of the spring. If the thickness of the wire is increased then the spring constant increases. With an increase in the diameter of the coil of the spring constant decreases.
How do you calculate spring index?
To calculate spring index you must divide the mean diameter (D) by the wire diameter (d).
How do you test a coil spring?
The easiest way to check for broken springs is by doing a visual check. Springs are located near the wheel just above the axle. It is usually helpful to lift your vehicle as it will make a broken spring more visible. Be sure to safely secure the body against any dropping or another sudden movement.
How do spring rates work?
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.
What is shock spring rate?
Spring rate refers to the amount of weight that is needed to compress a spring one inch. At this point the load on the spring is 400 lbs. The rate of the spring, however, remains constant at 200 lbs. per inch. Is there a difference between shock ride height and chassis ride height?