I need to replace a broken light duty torsion spring and need some advice.
It's broken right at the bend, I may be able to buy a new one but it will have to come from the UK to Australia and I need it ASAP.
The spring returns an aluminum flap through and rotates through an angle
The wire diameter is 4.5mm and the overall length of the spring is around 24".
I can get some 3/16" diameter "piano wire" (4.76mm) or 5/32" (4mm) from my local hobby shop. Will piano wire work OK as a spring in this sort of application?
Will I have trouble cold bending the ends?
I was thinking of drilling a 5mm hole through a heavy piece of metal and using pipe, then a hammer, applying the bend. I would try to leave a more generous radius than the on the original.
Thoughts?
Thanks guys.