Concentric Potentiometers

[jishnudg]

Every shop I go to, people tend to mix this up with dual ganged pots...I'm basically looking for the ones with dual shafts, and two knobs, one atop the other...are/were these commonly used by any industry/commercial products? Why the scarcity of these pots...would love some info and backstory, and hopefully clues to sourcing these parts.
Thanks,
J.

[mth5044]

They use them on some of the Danelectro guitars. A few years ago I bought two and then the four knobs.. don't remember weher, but if you look for Dano replacement parts you might find some.

[rutabaga bob]

I've got a couple from an old tube tape recorder.  They have long shafts...can't remember the values right offhand.  You're welcome to them if you want.  PM me an address.

Larry

[Jdansti]

Pot
http://www.warmoth.com/Concentric-Pot-500k-By-CTS-P720C74.aspx

Knob
http://www.warmoth.com/Concentric-Pot-C825.aspx

eBay: 80R, 20k, 50k, 250k, 500k
http://m.ebay.com/sch/i.html?kw=concentric+pot&epp=24&pgn=1&fads=1&so=12&itemId=null

Google Concentric Potentiometer

[GGBB]

They are quite common on guitars and basses with active preamps.  Some of my Cool Cat pedals have them.  Even Small Bear carries a few: http://www.smallbearelec.com/servlet/Detail?no=1213.

[davent]

As others have mentioned, shops selling guitar electronics. Have ordered from this site.

http://www.guitarelectronics.com/#search?elasticsearch=KEYWORDS=concentric pots

[amptramp]

Before you design them in, check that you can get concentric knobs.  I have several antique radios where they were used and if the knobs disappear, not much is available to replace them.  A lot of oscilloscopes used concentric knobs for pots and rotary switches.

[jishnudg]

You're right - - I've found quite a few of these pots from used car radio surplus; but having a really tough time finding knobs...will keep looking,though - - - thanks a ton for the input!

[tubegeek]

When you sell a used car it looks better if you don't have missing knobs, so look for the knobs in car parts stores - if you are in the US, places like Pep Boys, AutoZone. They're replacements for the radios you've been salvaging. Should be in the dashboard parts area.

[Luke51411]

Aviation radios use these a lot however aviation pricing isn't exactly friendly for DIY purposes...