[CW] Beautiful W4PAL Micro Bug

[Richard Knoppow]

    The speed would depend also on the stiffness of the main 
spring. Stiffer is faster. There may be an optimum ratio of 
stiffness to mass but I have no idea of how to define it. 
Commerical bugs with very similar overall dimensions have varying 
speed ranges depending on the main spring and its condition. My 
fastest is a Bunnell J-36, my slowest an old Speed-X, parts of 
both are about the same size but the spring stiffness is quite 
different.

On 3/2/2020 9:23 AM, Darrel wrote:
> Beautiful key.
> How does it work?  The vibrating arm looks much shorter than a 
> Vibroplex or similar bugs.  What I presume to be the adjustable 
> mass at the end of the arm looks a lot lighter than the typical 
> mass on other bugs.  Both of those factors would make it a very 
> fast bug.  Is there a damping mechanism equivalent to that on a 
> Vibroplex etc.?
>    Were many of these models made, or is it a one-off?
>
>      Cheers,
>            Darrel, aa7fv.
>
> On 3/2/2020 7:22 AM, D.J.J. Ring, Jr. wrote:
>>
>> Micro Semi-automatic key made by William Reeves Smith, W4PAL 
>> (SK), renowned clockmaker and key maker.
>>
>> 73
>>
>> DR
>> w4pal_micro_bug.jpg
>>
>>
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL