[JN] Ladegaard Air Arm

Jeremy Epstein jeremyepstein at earthlink.net
Wed Jun 15 01:57:33 CDT 2005


> From: "Eric Weitzman" <eweitzman at acm.org> wrote:
> Bear wrote,
>
>> Decrease the mass!!
>> Decrease the mass.
>>
>> Way way way too much mass here.
>
> This is his reasoning for setting the mass as he has done.
> <snip>
> What's wrong with this reasoning?
>
> - Eric

Nothing. In my experience, you have to *add* (horizontal) mass to the 
arm for best sound, and the limiting factor so far for me has been the 
strength of the air pump to lift the added mass.

But what do I know? I've only built and used the thing, not analyzed it.
(Note the spelling: Ladegaard.)

-j




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