by geeves » Mon May 25, 2009 6:53 pm
They have to be a length and curvature that allows them to fit the hangers/shackles. The lift springs are longer to allow for the greater curvature. The width,thickness and number of springs is also important. Generaly the more leaves for a given thickness the better the spring will work but you used to be able to get a spring for landrovers called a parabolic that gave incredible articulation with only a single leaf. Unfortunately the ride was rubbish with drivers teeth falling out all by themselves.
Sanding your knuckles before starting work can help. That way you cant skin them