03-04-2019, 11:26 AM
>How do you measure shaft?
Generally most shafts are 1/4" in diameter. The general exceptions are dual controls, two speed dial drives, and test equipment. However the shape more critical.
There is a round shaft these typically use a set screw to hold it in place.
There is a half round it which is just as it sounds and the knob that is fitted to it will have a metal clip inside to hold the knob tight onto the flat of the shaft.
Philco uses a very similar setup but it's just a bit more than a half so Philco knobs will fit very loosely onto a half round. You can fit the Philco knob on upsidedown and it will be on tight.
Split shaft has a gap at the center of the shaft and it has ridges on it. The gap can be used to adjust the tension on the knob.
Hope this helps.
Generally most shafts are 1/4" in diameter. The general exceptions are dual controls, two speed dial drives, and test equipment. However the shape more critical.
There is a round shaft these typically use a set screw to hold it in place.
There is a half round it which is just as it sounds and the knob that is fitted to it will have a metal clip inside to hold the knob tight onto the flat of the shaft.
Philco uses a very similar setup but it's just a bit more than a half so Philco knobs will fit very loosely onto a half round. You can fit the Philco knob on upsidedown and it will be on tight.
Split shaft has a gap at the center of the shaft and it has ridges on it. The gap can be used to adjust the tension on the knob.
Hope this helps.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
