HMV spring data

[anchorman]

Hi All,

I'm looking for mainspring information for various HMV motors. Is this available somewhere the way that Chunny has compiled info for various Garrard, Paillard and other motors?

[Inigo]

Times ago in this forum someone out a list of Victor motor springs, but I don't know if it's fully valid for the HMV brothers. Early machines I suppose had the same motors (when imported from the USA) but later HMV started to make their own motors, and the are slight differences...
Also I have somewhere in my files an old catalogue of supplies of our colleague soundgen, alas Mike Child, from Bedford, which had an extensive list of springs telling which machines fitted. If I ever find it, I will post it herein.

[anchorman]

Thanks!

[anchorman]

I’m more interested in the original sizes fitted, as there is some changes that happen along the way when we can’t easily get certain thicknesses of metal.

Here in the states the mills roll .025” spring steel, and .022, and many other sizes. But they do not make .024” anymore (if they ever did!), nor .026. It doesn’t make a huge difference, but say the motor was originally supposed to have .026” springs, and now we have only .025”. If a person were looking to get springs for this motor, they might decide to go with .024” since it’s not *that* much different from the .025” but .024 is significantly different from .026” thickness. How much in reality, I don’t know.

Then there is the original length. Switch to thicker or thinner, and the spring length either can be made longer, or *should* be made shorter. Would be nice to know the original sizes used whenever possible, so that people (and especially future spring manufacturers) can more easily select the best size to use for a particular motor.