[CW] The Quadra Bug

[D.J.J. Ring, Jr. via CW]

RM,

I must be like the comfort of the roller bearings (or sleeve bearings) in
the Marconi 365 series, or the torsion bar substitute on the Amplidan (born
M. Pedersson key of Copenhagen), two straight keys of excellent quality
that inspire confidence because the design engineer knew enough to extend
the base for the key under the mid-point of the knob shaped fingerpiece so
when pressure was applied to operate the key, it did not need the other
hand to hold the key from tipping.

The confidence of good design.

73

DR
On Jan 4, 2015 1:52 PM, "Richard Meiss" <wb9lpu at earthlink.net> wrote:

> Hi, David -
>
>      In theory, if the weights are separated by any distance, it gives the
> pendulum the opportunity to both move in an arc determined by the
> mainspring, as well as a moment of rotation at some place between the two
> weights.  But at the speeds and pendulum swings at which a bug is actually
> used, I don't think that this would come into play.  But splitting the
> weight would give you finer control over the speed.
>
>      Here is one of my favorite engineering sayings:
>
>      "In theory, theory and practice are the same; in practice, they are
> different."  So you can retire the special garment, at least for the time
> being.
>
>      73 de Rich, WB9LPU
>
>
> -----Original Message-----
> From: "D.J.J. Ring, Jr."
> Sent: Jan 4, 2015 2:03 AM
> To: Richard Meiss
> Subject: Re: [CW] The Quadra Bug
>
> Richard,
>
> Since you are taking risks, does my observation that a bug with a small
> weight at the end and a second weight adjusted to 30 wpm feels and acts
> differently that a bug with only one weight adjusted to 30 wpm, make any
> sense?
>
> For me the two weights were more stable.
>
> I have me jacket with the arms that tie together on, so you can tell me
> that I am nuts, and it will not hurt my feelings.
>
> David
> On Jan 4, 2015 1:14 AM, "Richard Meiss" <wb9lpu at earthlink.net> wrote:
>
>> Hi, David and All -
>>
>>      Perhaps it is premature of me to talk about it now, but I am
>> presently working on a design that promises to improve on earlier efforts.
>> It works nicely in the computer, but so did some of the others.  If it is
>> successful, any ratio of dot-to-dash can be set, and the ratio will track
>> over a wide speed range with a single adjustment. It will be simpler to
>> make than the QuadraBug and the recent TinyBug Auto.  But I may be
>> "counting my chickens before they hatch."  We shall see - I will share the
>> results with this group.
>>
>>      Ken is right about the relative fixity of the dot-to-dash ratio in
>> present designs.  The physics of compound pendulums and the required bias
>> magnets gets pretty complicated, so i think a new approach is in order.
>> This is what I am working on now.
>>
>>      Happy New Year to all.
>>
>>      73 de Rich, WB9LPU
>>
>>
>> -----Original Message-----
>>
>> From: "D.J.J. Ring, Jr."
>> Sent: Jan 3, 2015 9:49 PM
>> To: CW Reflector , Ken Brown
>> Subject: Re: [CW] The Quadra Bug
>>
>> Ken,
>>
>> Richard Meiss seems to be able to adjust the speed with one adjustment
>> which eliminates the problem of these mechanical dot and dashing keys.
>>
>> Congrats Richard.  Whadda key!
>>
>> 73
>>
>> David
>>  On Jan 3, 2015 9:13 PM, "Ken Brown via CW" <cw at mailman.qth.net> wrote:
>>
>>>
>>>  WB9LPU Richard Meiss has assembled another ingenious key,
>>>>
>>> Am I correct in my guess that the dot/dash ratio of 1/3 is a fixed value
>>> dependent on the relative masses and locations of the pivot points of the
>>> dual axis pendulum? That is really cool! I'd love to see this design
>>> concept evolve into something that could be produced in large quantities.
>>>
>>> DE N6KB
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>>>
>>
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