Weird DOD JuiceBox Potentiometers

[JVO]

I managed to get a DOD Jukebox that was in pretty okay shape, except for the potentiometers. I tried deoxit and other contact cleaner but 20+ years of neglect took its toll and they were shot. These were W100K potentiometers D-shaft potentiometers with long legs. So, I order some D-shaft potentiometers with long legs (B100K) and put them in and get this: the DOD potentiometers' shafts are 180 degrees from every other potentiometer! This means that, with the pot turned all the way ccw, the notch is at (with the top being 0 degrees) 210 degrees whereas every other D-shaft is at 30 degrees.

So, I have to find W100K potentiometers D-Shaft potentiometers with long legs with the D-shaft notch at 180 degrees than normal.

I have tried buying 6mm solid shaft pots and shaving in new notches using a Dremel but they were too inaccurate due to not having a good jig to hold the shaft while I cut it. I've taken apart other potentiometers to try to figure out if I can take D-shaft pots apart and rotate the shaft 180 degrees but they are stuck pretty good to the base where the metal fingers touch the resistive substrate. 

Any suggestions? I'm thinking about taking them to a machinist and seeing what they can do but who knows how much that will cost.

I'm all ears to suggestions. Thanks in advance.

[PRR]

> DOD Jukebox

I don't even know what that is? Google baffled also. Picture? Link? Clue?

EDIT --- OH!! Juicebox.


Can you add wires to the pot legs and mount the pots in the shell 180 degrees around? Looks right from the outside, though inside it is clearly "hacked".

Cut a new notch or pointer 180 degrees around and file/fill the old pointer/notch? (Yes, I hate irreversable hacks too.)

Get a bunch of the not-quite-right pots and start taking them apart. The wiper-wafer is often on a 2-flats circle hole/nub. Un-peen the numb, turn the wafer, probably have to epoxy it back (the peen is barely adequate before you bung it off). This may make shaft-chips inside the pot, or break bits off, why I said to get a bunch to experiment on.

[ElectricDruid]

If the D-shaft pots are being a problem, could you use round shaft ones and replace the knobs? That avoids any problem with where the cutout is.
Alternatively, buy round-shaft pots and file the flat area out where you need?

[Processaurus]

1/4" round shaft pots and 4x new knobs

[Processaurus]

Or new D shaft knobs with the flat on the right side. Or like electric Druid was thinking, use a file to flat the knob rather than power tools. Get the shaft sideways in a vice with enough sticking up so the file can make it flat. Be careful off little bits of metal getting down inside the collar!

Can you add wires to the pot legs and mount the pots in the shell 180 degrees around? Looks right from the outside, though inside it is clearly "hacked".

I like that but they may not have the room inside for the legs on the outside pots, with the enclosure's corner screw bosses:

[antonis]

Are you sure for fixed knobs caps..??

[JVO]

These are all great suggestions! Thank you!

What I end up doing was talking to my guitar tech who suggested gripping a normal 1/4" shaft with needle nose pliers to hold the shaft in place and then putting the body of the pot in a vise. I did this and then used a hacksaw to shave off the D notch.

The result worked really well!



These were those stupid Tayda long legs so I had to shape those to fit into the circuit board holes but I used a Dremel for that.

The pedal sounds great and is as close to stock as I'm going to get it.