[Harp-L] re 280/2064 chromatic screws go in up or down

[Joseph Leone <3N037@xxxxxxxxxxx>]

Inasmuch as the harmonica is identically (except for pitch) made on both the top and bottom tiers, to think that assembling them with one pattern over another 
with the idea that various patterns have been thought out and it was determined that one was best, IS, at best, false logic. When engineering a product, a certain
amount of thought goes in as far as where the stresses lie, and bosses and pads and bolsters have to be added to counteract this. And you have to stay out of the 
way of important parts. The only thing you have to do with a harmonica is affix the plates (reasonably) tightly together. That's it. 

As far as I'm concerned, assembly was simply a matter of how the designer drew the plan. It could be as simple as: right handed designer = screws (escutcheon pins) go in from the top. Left handed designer = screws (escutcheon pins) go in from the bottom. Designer whom looks at things from 'both sides now' = screws (escutcheon pins) go in from BOTH sides.

smokey-joe.   (co-een-chee-denza?....yup)

  

On Feb 6, 2013, at 2:00 PM, Robert Hale wrote:

> On Wed, Feb 6, 2013 at 10:53 AM, Winslow Yerxa <winslowyerxa@xxxxxxxxx>wrote:
> 
>> And yet the XB-40 is assembled with all screws going from the bottom reed
>> plate up to the top. Rationale?
>> 
>> (And Rick Epping)
> 
> up/down configuration that was used for the pins resulted in a slightly
>> better performance.
> 
> 
> "Pins/nails Up Down = performance" would not necessarily confirm that
> Screws Up Down yield the same (better) performance. Other variables are
> present.
> 
> I can acknowledge a manufacturing advantage if the nails are shot form both
> sides of the harp.
> 
> Robert Hale
> Spiral Advocate
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