I need to make or buy a spiral spring for a window regulator of an old
car. The regulator was made by Bright of Coventry, so it's not the
usual Wilmot Breeden type.
The spring, which is shown at
is made from 3/8" wide by 3/32 thick steel, has hooks at each end, an
o/d of around 2 1/4", and has just under four turns. The relative
position of the ends isn't critical, as there's a choice of slots to
locate the inner end.
Should I try to find a spring maker who'll make small quantities (I
don't mind buying one or two spares), in which case any suggestions
Or should I buy the material and make one? I'm familiar enough with
annealing ends etc and handling clock springs, but for a spring of this
thickness, would you buy hardened and tempered material or heat treat it
after forming? Again, any materials supplier suggestions would be
I'm between Derby and Nottingham (the best folk are).
12 years ago