### Talking about Springs....

Posted:

**Sun Jul 13, 2014 7:57 pm**Here is one definition of a spring...

I prefer to think of it as a device for storing energy. Those of us

who have opened an old wind-up clock to see how it works, and had

the spring unwind in our face, already know that. And if you tried to

take the spring off your front strut without using spring compressors,

you could be carrying the scars of learning

When talking about coil springs, the strength or stiffness of the spring

is rated in lbs/inch or kg/mm. This defines how much the load on the

spring has to increase to compress the spring by another inch or mm.

The conversion factor is 0.0179 which means that 250lbs/inch becomes

250*0.0179=4.475kg/mm or 6kg/mm becomes 6/0.0179=335lbs/inch.

The stiffness of a coil spring is determined by the thickness of the

wire, the diameter of the coil and the number of active coils. As the

formula for calculating spring stiffness is a bit tedious,

you could use the calculator provided by Wallace Racing

However, you do need to know this...

1. The fatter the wire, the stiffer the spring.

2. The more active coils you have, the softer the spring.

3. The bigger the diameter of the coils, the softer the spring.

Then you will understand how these different types of springs work...

See Springs for my Ride for how this information can help you choose

the springs for your ride

Cheers... jondee86

A spring is defined as an elastic body, whose function is to distort when

loaded and to recover its original shape when the load is removed.

I prefer to think of it as a device for storing energy. Those of us

who have opened an old wind-up clock to see how it works, and had

the spring unwind in our face, already know that. And if you tried to

take the spring off your front strut without using spring compressors,

you could be carrying the scars of learning

When talking about coil springs, the strength or stiffness of the spring

is rated in lbs/inch or kg/mm. This defines how much the load on the

spring has to increase to compress the spring by another inch or mm.

The conversion factor is 0.0179 which means that 250lbs/inch becomes

250*0.0179=4.475kg/mm or 6kg/mm becomes 6/0.0179=335lbs/inch.

The stiffness of a coil spring is determined by the thickness of the

wire, the diameter of the coil and the number of active coils. As the

formula for calculating spring stiffness is a bit tedious,

you could use the calculator provided by Wallace Racing

However, you do need to know this...

1. The fatter the wire, the stiffer the spring.

2. The more active coils you have, the softer the spring.

3. The bigger the diameter of the coils, the softer the spring.

Then you will understand how these different types of springs work...

See Springs for my Ride for how this information can help you choose

the springs for your ride

Cheers... jondee86