[Elecraft] Fwd: Turnbuckle Threads -- Clarification for All. another suggestion.

[David Christ]

Here is another for you.  Background.  In order to be able to take them on airplanes tandem bicycles are often made with stainless steel couplers than can be unscrewed to take the frame apart.  Adding the couplers to a tandem add between $1000 and $2000  to an already multi thousand dollar bicycle.  Stainless steel is prone to galling and having a coupler seize makes the bicycle unridable and results in a very expensive repair.  

The manufacturer of these couplers has put a lot of effort into finding lubrication that best prevents galling.  After testing over 100 products they recommend using Finish Line™ Extreme Fluoro Grease. The attached link explains their findings.

<http://www.sandsmachine.com/grease_t.htm>

When you look at the kind of things they design and manufacture you get the feeling they know what they are talking about

<http://www.sandsmachine.com/s_about.htm>

Disclosure: I and many friends have bicycles with their couplers but have no financial interest in the business or the lubricant.

David K0LUM

> On Nov 2, 2019, at 10:28 AM, Richard <FlatHat at comcast.net> wrote:
> 
> 
> 
>> Begin forwarded message:
>> 
>> From: Richard <FlatHat at comcast.net>
>> Subject: Re: [Elecraft] Turnbuckle Threads -- Clarification for All
>> Date: November 2, 2019 at 11:25:17 AM EDT
>> To: Mark Goldberg <marklgoldberg at gmail.com>
>> 
>> These ropes are more accurately anti-droop cords on a long-boom yagi.
>> 
>> I am in central Florida, nowhere near salt water, temperatures nominally 95F to 40F. 
>> 
>> I AM using stainless turnbuckles: "stainless steel/stainless steel” means both the body and the screws are stainless steel.
>> 
>> These turnbuckles are recommended by Justin Johnson of InnovAntennas for his antennas.
>> 
>> The two answers I like best so far are Permatex anti-seize and John Deere corn head grease. Any more?
>> 
>> Richard
>> 
>>> On Nov 2, 2019, at 10:56 AM, Mark Goldberg <marklgoldberg at gmail.com <mailto:marklgoldberg at gmail.com>> wrote:
>>> 
>>> Richard:
>>> 
>>> If you are asking about anti-seize, I use Nickel anti-seize on stainless hardware, even in Aluminum.
>>> What is your environment? Are you near salt water? What are your temperature extremes?
>>> I am in a dry climate so Aluminum - Stainless Steel galvanic corrosion is not a big issue.
>>> 
>>> John:
>>> 
>>> What is the reason to not use stainless steel if properly rated for the load?
>>> 
>>> 
>>> 73,
>>> 
>>> Mark
>>> W7MLG
>>> 
>>> 
>>> On Sat, Nov 2, 2019 at 7:27 AM John Stengrevics <jstengrevics at comcast.net <mailto:jstengrevics at comcast.net>> wrote:
>>> I would not use stainless.
>>> 
>>> 
>>> John
>>> WA1EAZ
>>> 
>>>> On Nov 2, 2019, at 10:17 AM, Richard <FlatHat at comcast.net <mailto:FlatHat at comcast.net>> wrote:
>>>> 
>>>> For stainless steel/stainless steel turnbuckles being used on guys ropes, what’s the best stuff with which to protect the threads?
>>> 
>> 
> 
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