Soundboard crown

[Erwinspiano@aol.com]

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In a message dated 8/17/2003 10:19:37 PM Pacific Daylight Time, 
fordpiano@earthlink.net writes:

> >> >>> >>>> 
>>>> 
>>> 
>> >>> 
>>> 
>> >>> I wasn't intending to comment on CC vs RC boards here.  By 
>>> conventional, I meant a board that was intended to to have a positive crown, which 
>>> includes every piano I've ever seen (but not every piano that Dale's ever 
>>> seen).  I therefore felt safe in calling this 'conventional'.
>>> 
>>      Phil --These reverse crown boards by the way were so intentionally 
> reverse crowned that they must ,as you surmised,have opposite crowned ribs (the 
> other direction than usual). The boards must have been pressed on a dome.  
> I've seen 5 of these pianos now 4 grands and  2 or 3 upright I can't recall the 
> name of all but one was a 1910 Becker. In all cases when the strings were off 
> the boards  the salad bowl effect remained. It wasn't the result of too much 
> bearing . These boards were obviously in tension as they had positive 
> bearing but none had significant damage.

                Dale E




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