4000 HS project.
Posted: Mon Sep 17, 2012 11:12 am
I was lucky enough to find a 60's 6 pole HS pickup from a local guitar repair shop, non working and after being told it wasn't worth repairing as they are very weak pups anyway, I bought it.
On examination it had broken coils, I feel this had been due to the fact that the poles were too short (cut to length with side cutters!), so once assembled and over tightened the whole bobbin compressed in the middle and over the years pushed the winding out and the first couple of coils that made it out got broken.
The magnetism of the shoes seemed just ok, not having a Gauss meter I used a 12 inch steel rule, the further off centre they could lift it would give a very rough idea of strength, they both in turn lifted the rule at about 4 inches from one end. I re charged them and the results are pictured below.
I decided I would try and repair the coil, so I found the two broken coils and joined them back together, whether I joined the right one to it's former self I can't be sure, but the coil once fixed measured 6.25K. New poles cut to length to suit string heights and also touch the shoes below without compressing the bobbin and it's ready to fit to a bass.
On examination it had broken coils, I feel this had been due to the fact that the poles were too short (cut to length with side cutters!), so once assembled and over tightened the whole bobbin compressed in the middle and over the years pushed the winding out and the first couple of coils that made it out got broken.
The magnetism of the shoes seemed just ok, not having a Gauss meter I used a 12 inch steel rule, the further off centre they could lift it would give a very rough idea of strength, they both in turn lifted the rule at about 4 inches from one end. I re charged them and the results are pictured below.
I decided I would try and repair the coil, so I found the two broken coils and joined them back together, whether I joined the right one to it's former self I can't be sure, but the coil once fixed measured 6.25K. New poles cut to length to suit string heights and also touch the shoes below without compressing the bobbin and it's ready to fit to a bass.