RE: [triumph_herald] uprted coil springs

["Randall Young" <ryoung@navcomtech.com>]

> got asked this question the other day, thought about it and was embarrased
> not to have a definitive answer - can anyone put me right?
> 
> "how do you manufacture extra stiffness into an upratd coil spring?"

1) Use bigger diameter wire
2) Use a 'stiffer' steel alloy
3) Harden (and temper) the steel after forming the spring

I'm not sure the third technique is commonly used, but the first two are.

Randall

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