Re: [Elecraft] Loctite

[Hank P]

One more point about "loose" screws or nuts  and Loctite.  Any place the 
hardware is going thru a PC board (or any material that will cold flow at 
the pressures we get) , after a period of time there will be some "cold 
flow" of the board and Loctite will not fix that. Hopefully the split lock 
washers will minimize the effect  .  I had two  transceivers from another 
American manufacturer even with split locks and the tx ALC  would get 
unstable about once a year or two and just tightening all the grounding 
screws around the boards  would tame it down for another year. I suspect if 
I kept them for long enough the clod flow would finally stop.


Hank K7HP


From: Don Wilhelm
Sent: Thursday, June 18, 2015 7:05 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Loctite

Mainly for kit builders --
Because the screws are stainless steel but are threaded into aluminum,
there is a small chance of a slight galling of the threads, making it
impossible to fully tighten the screw.  A bit of light oil the first
time a screw is inserted would my choice rather than a thread locking
compound.  If the oil drips, you have too much on - wipe the threads
with a cloth, there will be enough remaining to do the job.

The black screws are *supposed* to be an aid in tightening, but a little
bit of extra gives that last bit of assurance.

I will repeat my caution to use a good #1 Phillips screwdriver to keep
from rounding out the screw heads.  If you can see shiny spots on the
screwdriver tip, replace it with a new one.

73,
Don W3FPR


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Re: [Elecraft] Loctite

[Amateur Radio Operator N5GE]

On Thu, 18 Jun 2015 10:05:56 -0400, you wrote:

>I will repeat my caution to use a good #1 Phillips screwdriver to keep 
>from rounding out the screw heads.  If you can see shiny spots on the 
>screwdriver tip, replace it with a new one.

And make sure you are not using a Reed and Prince screw driver.  A
Reed and Prince screw driver has has a sharp point on the business end
which will keep it from seating properly in the head of a Phillips
screw, which will usually ruine the screw head by stripping the head,
making it very hard to remove.

Amateur Radio Operator 
N5GE 
>
>73,
>Don W3FPR
>
>On 6/18/2015 9:24 AM, Dennis Griffin wrote:
>>
>> Even though the screws may be of a stainless steel material, there is still 
>> a slight potential for galvanic corrosion. I’d think that use of a heavy 
>> bodied anti-seize compound on these screws would be all the “thread locker” 
>> most OM’s would need.
>>
>>
>
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Re: [Elecraft] Loctite

[Don Wilhelm]

Mainly for kit builders --
Because the screws are stainless steel but are threaded into aluminum, 
there is a small chance of a slight galling of the threads, making it 
impossible to fully tighten the screw.  A bit of light oil the first 
time a screw is inserted would my choice rather than a thread locking 
compound.  If the oil drips, you have too much on - wipe the threads 
with a cloth, there will be enough remaining to do the job.


The black screws are *supposed* to be an aid in tightening, but a little 
bit of extra gives that last bit of assurance.


I will repeat my caution to use a good #1 Phillips screwdriver to keep 
from rounding out the screw heads.  If you can see shiny spots on the 
screwdriver tip, replace it with a new one.


73,
Don W3FPR

On 6/18/2015 9:24 AM, Dennis Griffin wrote:


Even though the screws may be of a stainless steel material, there is still a 
slight potential for galvanic corrosion. I’d think that use of a heavy bodied 
anti-seize compound on these screws would be all the “thread locker” most OM’s 
would need.




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Re: [Elecraft] Loctite

[Harry Yingst via Elecraft]

On this subject I would tend to believe some of it's due to thermal expansion 
and contraction


  From: Dennis Griffin 
 To: "elecraft@mailman.qth.net Mailer"  
 Sent: Thursday, June 18, 2015 9:24 AM
 Subject: Re: [Elecraft] Loctite
   
A small drop of Loctite® 222, which is purple in color, would be appropriate 
for these small screws in this application. However, I don’t consider most cars 
to be a high vibration environment. If one were to regularly drive on 
cobblestone or washboard surfaces, then a thread locker might be warranted, but 
that would be more of a low frequency vibration, very unlike a high frequency 
vibration, such as might be generated by a high RPM 4 cylinder motorcycle 
engine.

Even though the screws may be of a stainless steel material, there is still a 
slight potential for galvanic corrosion. I’d think that use of a heavy bodied 
anti-seize compound on these screws would be all the “thread locker” most OM’s 
would need.

73 de Dennis KD7CAC
Scottsdale, AZ



> On Jun 18, 2015, at 5:59 AM, David Robertson  <mailto:kd1na...@gmail.com>> wrote:
> 
> One of the members of this e=mail forum made the following statment:
> 
> 
> "If the radio is going to be used in a high vibration environment, like a
> car, sealing the screws with Loctite might be a good idea."
> 
> Although he is correct, you must be very careful on which type of Locktite
> you use. Locktite comes in colors and you want to stay away from the red
> color Locktite as it is perment. Using it will make it very difficult, if
> not impossible to remove.
> 
> 73
> Dave KD1na
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Re: [Elecraft] Loctite

[Dennis Griffin]

A small drop of Loctite® 222, which is purple in color, would be appropriate 
for these small screws in this application. However, I don’t consider most cars 
to be a high vibration environment. If one were to regularly drive on 
cobblestone or washboard surfaces, then a thread locker might be warranted, but 
that would be more of a low frequency vibration, very unlike a high frequency 
vibration, such as might be generated by a high RPM 4 cylinder motorcycle 
engine.

Even though the screws may be of a stainless steel material, there is still a 
slight potential for galvanic corrosion. I’d think that use of a heavy bodied 
anti-seize compound on these screws would be all the “thread locker” most OM’s 
would need.

73 de Dennis KD7CAC
Scottsdale, AZ

> On Jun 18, 2015, at 5:59 AM, David Robertson  > wrote:
> 
> One of the members of this e=mail forum made the following statment:
> 
> 
> "If the radio is going to be used in a high vibration environment, like a
> car, sealing the screws with Loctite might be a good idea."
> 
> Although he is correct, you must be very careful on which type of Locktite
> you use. Locktite comes in colors and you want to stay away from the red
> color Locktite as it is perment. Using it will make it very difficult, if
> not impossible to remove.
> 
> 73
> Dave KD1na
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Re: [Elecraft] Loctite Multicore solder

[NR5A]

Did anyone order this and get it?? I ordered and still nada. Wondering if I
got ripped??
Jerry - NR5A
- Original Message - 
From: "Joseph Trombino Jr" <[EMAIL PROTECTED]>
To: "QRP-L" <[EMAIL PROTECTED]>
Cc: "Elecraft" 
Sent: Tuesday, September 27, 2005 10:58 PM
Subject: [Elecraft] Loctite Multicore solder


> Howdy Fellow Builders:
>
> I was "googling" Loctite Multicore (formerly Ersin Multicore) and found a
> source to order from.
>
> The source is RSHughes and the solder I ordered can be found at:
>
> http://rshughes.com/products/mm00979.html
>
> I ordered two rolls of the .020" 63/37, Loctite (and RSHughes) number
> MM00979.
>
> The solder is listed at $9.50 per 1lb roll..very reasonable given the
> price quotes I have seen on other vendor pages.
>
> You need to go thru the on-line process of setting up an account first,
then
> you can order what you want.
>
> They will ship UPS ground and an office in Raleigh, NC will be sending it
to
> me so I hope the shipping isn't too bad.
>
> I have wanted to try this stuff for several years but finding a reasonable
> price has been a problem until today.
>
> Just thought I'd pass along what I believe is a good deal.
>
> 73, Joe W2KJ
> I QRP, therefore, I am
> North Carolina
>
>
>
>
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Re: [Elecraft] Loctite multicore solder

[Tom Hammond]

Jim:

At 08:47 AM 9/29/2005, Jim Campbell wrote:
I also placed an order for two rolls of the Loctite solder with R. S. 
Hughes.  I received a call earlier this morning from their Raleigh, NC 
location informing me of the minimum requirement for 20 1-pound rolls.

I told them to cancel the order.


...

Interesting... at the very TOP of their web page it says, "NO MINIMUM 
ORDER"...!


Call 1-877-774-8443. That's their KC MO office, and that's where I spoke 
with the young man who confirmed that bulk orders, while appreciated, were 
NOT required. I'll bet he can help you out.


Or just order via their web site at:

   http://rshughes.com/products/mm00979.html  for .020" dia.
or
   http://rshughes.com/products/mm00980.html  for .025" dia.
or
   http://rshughes.com/products/mm00981.html  for .030" dia.

Their web site offers quantities of "1" and up.

73,

Tom   N0SS

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Re: [Elecraft] Loctite multicore solder

[Jim Campbell]

I also placed an order for two rolls of the Loctite solder with R. S. 
Hughes.  I received a call earlier this morning from their Raleigh, NC 
location informing me of the minimum requirement for 20 1-pound rolls.  
I told them to cancel the order.


Apparently someone else had also ordered from them.  That person told 
them that there were several people interested in one or two rolls.  I 
just received another call from the Raleigh branch and they have decided 
to order a 20-roll box and break it up.  So if you live in the Raleigh 
branch's territory (wherever that is) they will accept a small order.  
Those living outside the Raleigh office area of responsibility might try 
e-mailing them at [EMAIL PROTECTED] and perhaps they will honor your 
order.


72,

Jim
W4BQP
Spartanburg, SC
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