[TowerTalk] Loosening Al tubing to Al Tubing

[Roger (K8RI) on TT]

Agreed. I should have said, thoroughly coat the tubing.  Myself, I don't 
worry about the excess if the tubing is clamped tight, or in my case, 
riveted. F12 uses three rivets in a row.  I believe they now use two 
rows at 90 degrees. That last rivet close to the end seriously weakens 
the inner tube when you are down to 5/16ths, or 3/8ths
However, excess Noalox can act as a lubricant if the tubes are not 
clamped tight.  I'd not use a rag to wipe off the excess though as a dry 
rag is likely to remove too much.  Like many things, there is a learning 
curve to leave the proper amount.

73

Roger (K8RI)


On 6/13/2016 Monday 9:12 AM, John / K4WJ wrote:
> Roger, I vaguely remember someone posting on this reflector that when 
> using Noalox that after applying it you should run a rag over the area 
> to remove most of the bulk and just leave behind a very thin layer of 
> Noalox or Penetrox. Why do you say "Use lots of Noalox when 
> reassembling?"
>
>
> 73..de John/K4WJ
>
>
>
> On 6/12/2016 2:03 PM, Roger (K8RI) on TT wrote:
>> After the usual wait, PB Blaster, or Mouse Milk loosen the corrosion 
>> and provide a lubricant. Metal fragments, depend on size.  Over time, 
>> they tend to corrode faster than the tubing, My C19XR uses a row of 3 
>> rivets with one quite close to the end, but the factory holes have 
>> been deburred. Disassembly just requires carefully drilling out the 
>> head without drilling into the tube. They are 1/8th" rivets, so a 
>> sharp, 1/4 inch drill works well at removing the heads,  A small 
>> drill, or drift punch easily pushes the shank into the tube, leaving 
>> a clean hole.  Fine Scotchbright pads will shine up the outside of 
>> the inner tube and a small wire brush for cleaning tubes that size 
>> usually works well. _Use lots of Noalox when reassembling. __
>> ___
>> The scratches may, or may not be a problem depending on the depth. 
>> Deep scratches tend to have ridges along the edges. Just smooth off 
>> the ridges along the scratches. before reassembly.
>>
>> 73


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