Broken Plate

[Farrell]

Oh, okay, I get you now. It's ultimately the strength of the plate that 
would allow a design that has the soundboard extending up behind the 
pinblock. Gotcha now.

Thanks.

Terry Farrell

----- Original Message ----- 
>
>> If I understand you correctly, this arrangement would allow the 
>> soundboard to actually go under the pinblock?
>
> Exactly.
>
>
>> If so, I still don't see why backposts would prevent that anyway (in a 
>> traditional plated piano). I think it is the pinblock that would be in 
>> the way of extending the soundboard way up there.
>
> And what holds a pinblock in place in a typical vertical? It's sandwiched 
> between the plate and a filler block, to the back posts. The plate won't 
> hold the block in place against string tension or we wouldn't be bolting 
> the things back together when the original structure fails and the block 
> separates from the back. If the plate is strong enough, like an 
> Astin-Weight, the back structure isn't necessary and the soundboard can go 
> up behind the pinblock, also like the Astin-Weight. 
> http://www.astin-weight.com/Our_patent.sb
> Ron N
>