[Johnson] Johnson KW Matchbox

[Fern]

Use Blue Loctite.   Fern


----- Original Message ----- 
From: "Charles Ring" <w3nu at roadrunner.com>
To: <johnson at mailman.qth.net>
Sent: Wednesday, July 08, 2009 8:07 AM
Subject: Re: [Johnson] Johnson KW Matchbox


> My KW Matchbox, which was new in 1969 (HS graduation present from my 
> parents) has never had that problem as far as I can remember. I have 
> removed and reattached the knobs several times to remove the cover.
> 
> 73 de W3NU
> 
> 
> 
> Jim wrote:
>> File a small flat area on one side of the shaft.....
>>
>> Jim
>>
>>   
>>> Get some Lock-Tite and put a drop on the set screw.  Just don't get the 
>>> kind that is intended for screws that are not to be removed.
>>>
>>> David
>>> KC2JD/4
>>>
>>> Steve wrote:
>>>     
>>>> I have two of the Johnson KW Matchboxes.
>>>>
>>>> The TUNING knob on one and the MATCHING knob on the other were loose on 
>>>> their shafts recently and I tightened the knobs' set screws.
>>>>
>>>> I haven't kept any notes, but the knobs seems to loosen on the shafts 
>>>> often enough that it's an annoyance. I don't recall if it is the same 
>>>> knobs that keep loosening on their shafts.
>>>>
>>>> I guess that with use and over time, the set screw backs out a little, 
>>>> thus allowing the knob to freely turn on the shaft.
>>>>
>>>> Is there a method to tighten the set screw and expect it to stay tight?
>>>>
>>>> Thanks.
>>>>
>>>> Steve K8JQ
>>>>
>>>>       
>>> _
> 
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