[TMC] Vox question

[Tom Brent]

Chris, you probably need a #12-24. Basic diameter of a #12 screw is 0.216 inches, in between the #10-32 (dia. 0.190) and 1/4 inch you have already tried. Less common are #12-28 and #12-32 threads.

Tom
._._.

Sent from my iPhone

> On Mar 30, 2022, at 7:04 PM, Chris Bolkan <bolkyboats at gmail.com> wrote:
> 
> Hello TMC lovers!
> 
> My VOX 3 is a mess, so I disassembled it in order to clean and lube all of
> the mechanicals before bringing it up electrically. In the process I
> removed the oscillator from the oven. Good thing I did because dried up
> grease had made things pretty sticky and non-functional in there. The cam
> follower mechanism was too gummed up to follow the cam anymore and the
> little follower wheel was frozen among other minor things. I fixed all that
> and now everything works smoothly.......and I do not believe I messed
> anything up during the cleanup!
> 
> However, when I was removing the oscillator one of the four brass screws
> that holds the oscillator in the aluminium casting galled on the way out. I
> counted the thread pitch at 24 TPI and it looked like a 1/4 inch screw. I
> did not have a 1/4-24 tap and die to chase the threads so I ordered one.
> When it got here, I found that it was too big in diameter! I have a 10-24
> tap and die and it was too small! I verified it is not an M6-1 thread. I am
> stumped! What size are these mystery screws?!? I need to chase the threads
> on the screw and clean the threads in the casting before reassembling
> the oscillator.
> 
> Did I say I'm stumped?
> 
> Many thanks!
> 
> Chris
> KI7NXY
> ______________________________________________________________
> TMC mailing list
> Home: http://mailman.qth.net/mailman/listinfo/tmc
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:TMC at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html