Jet Bumper spring
I received the jet bumper spring from a local shop today and fit it into the weak jet bumper. It didn’t work. I took it out again and compared it to the one that had been in there originally – it was the same (a 10-135). Time to order the right one – again!
I had been doing a bit of research into springs, as you do, and discovered that the strength of a spring is proportional to the thickness of the wire and inversely proportional to the coil diameter and the number of turns in the coil. So, as I now have to wait until I receive the right coil, I thought I’d do a little experimenting. So I took a turn out of the coil:
10-135 spring on left – minus one coil on right
I put this coil in the pop bumper, but it also didn’t work! Guess I’ll have to wait for the right spring after all!