CarlosV wrote:
Marco Gilardetti wrote:
It's not the first time that I read Edison's DD springs being so stiffer than all others. I wonder how they were installed at factory, was it done by a machine perhaps?
The service manual has a photo (see fig 3 in the attached file) with a pair of hands manhandling the beast!
Some years ago I replaced both springs of my Opera phonograph. It was very scary, I missed not having an middle age armor to wear, including a plume on the helmet, which would not add protection but would add a touch of class to an otherwise messy task.
I'm sure it couldn't have been done that way in the factory. Can you imagine someone's hands at the end of the day, even if they wore gloves???
I installed a C150 spring many years ago, when I had more muscle than I currently maintain. It got scary when I was only ½ way done, but began to realize my grip was weakening considerably. It was a race to the end. When I got done, my hands were near blistered and my wrists were pretty darn sore. I'll tackle any number of springs for other makes, but I'm not looking to do any other Edisons. (I can't even imagine a Triumph spring!)