torsion spring question

[waters_jim]

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I am attempting to install the torsion spring in an automatic. I am using a 1/2" od spring from knifekits, I am not sure which strength. The problem is that when I attempt to load the spring, that is take the blade of the knife from the open position to the closed the spring deforms. It seems to have only about 90 degree travel before deforming. Obviosly I am doing something wrong but I am not sure what.

Thanks
WJ

 

[Absinthe]

A picture might help. Normally there is outside support of the spring. I have one that has a spring cage to support it. You might have either too long of a spring so the upper coils are not supported, or possibly too narrow of an OD also giving to a lack of support. There should either be a pocket or a bushing supporting the outside of the spring, pretty much all the way up to the blade tang.