[ARC5] Command Set Shaft Collar Nut

[Leslie Smith]

  Threads on "command" radio receivers.

  I refer to the thread used between the tuning system and the receiver.
  I measured the thread using a thread gauge. 

  I found the thread was 27 turns to the inch (and NOT 28 tpi)

  Using Newnes Workshop Handbook I read that (1) the thread was 1/2 inch
  cycle thread
  (2) this thread was considered to resist "unwinding" due to vibration.


  That's all I know.  

  Except I thought it was very clever to use a thread that resisted
  working free in equipment subject to vibration.
  How did those radio guys know about bicycle threads?   Hmmm?



   73 de Les Smith

   vk2bcu at operamail.com







On Wed, Apr 12, 2017, at 08:17, Phillip Carpenter wrote:

> Mike,

> 

> I was reading that website posting but it was unclear if the ARC-5
> receivers had the same thread. It looked like he was talking about ARB
> receivers.
> 

> Phillip W4RTX 

> 

> Sent from my iPhone

> 

> On Apr 11, 2017, at 5:39 PM, Michael Hanz <aaf-radio-
> 1 at aafradio.org> wrote:
>> See http://aafradio.org/garajmahal/flex_drive_cables.html for all
>> that stuff.  The tuning shaft collar is a straight 1/2"-27TPI thread
>> (_not_ a tapered pipe thread).
>> 

>>  73,

>>  Mike

>> 

>> 

>> On 4/11/2017 5:26 PM, Phillip Carpenter wrote:
>>> Does anyone know what thread size and type of through-hole nut fits
>>> the shaft collar on the Command Set receivers?  I know it's smaller
>>> than a 3/8" NPT compression nut.  Thank you in advance to all who
>>> reply!  Respectfully,  Phillip W4RTX  Sent from my iPhone
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