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 500K Dual Pot needed
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 Return to top of page · Post #: 1 · Written at 10:33:57 PM on 26 February 2018.
Scotty's Gravatar
 Location: Melbourne, VIC
 Member since 26 December 2010
 Member #: 794
 Postcount: 328

Hi Folks,

Does anyone have a spare 500K Dual pot to suit an old STC Stereogram
Shaft is a half moon 6mm, long stem.

Thanks in advance

Scott


 
 Return to top of page · Post #: 2 · Written at 12:54:50 PM on 27 February 2018.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4506

One normally also accepts one with a long shaft, puts the shaft in a vice & modifies it appropriately using a hacksaw & de-burrs it with a file: 1/4" seems awfully short. There might be a second hand one here that's good?


 
 Return to top of page · Post #: 3 · Written at 7:08:37 PM on 27 February 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6172

1/4" is the shaft diameter.

You don't say which taper, log or linear, but long shaft dual gang pots are getting harder to find these days.


 
 Return to top of page · Post #: 4 · Written at 7:58:31 PM on 27 February 2018.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6574

Most often, volume controls were logarithmic and tone controls were linear.

I agree on rarity. You pretty much have to drag a like machine off a cleanup pile to get some of these spares now. In a fortunate twist, this is where most 1960s radiograms end up.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 5 · Written at 8:41:11 PM on 27 February 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6172

Being a stereo-gram, the balance control will also be linear.


 
 Return to top of page · Post #: 6 · Written at 9:53:40 PM on 27 February 2018.
Kakadumh's Gravatar
 Location: Darlington, WA
 Member since 30 March 2016
 Member #: 1897
 Postcount: 155

I have a C curve 500K pot in my stash..its yours for postage costs from WA.

Your postage details & I will let it loose via Aust Post.

Lindsay


 
 Return to top of page · Post #: 7 · Written at 12:07:51 PM on 8 March 2018.
Kakadumh's Gravatar
 Location: Darlington, WA
 Member since 30 March 2016
 Member #: 1897
 Postcount: 155

Scotty,

Pot posted as requested on 6/3/18.

Good luck with your repair. Lindsay


 
 Return to top of page · Post #: 8 · Written at 7:18:15 PM on 14 March 2018.
Scotty's Gravatar
 Location: Melbourne, VIC
 Member since 26 December 2010
 Member #: 794
 Postcount: 328

Thanks folks.


 
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