[pianotech] Bass String Length Mismatch Tuning Trouble

[Terry Farrell]

> The wrap terminations are at the same position (equal
> distant from speaking bridge pins) at the bridge end, thus rendering
> unequal wrapped speaking lengths.

Photo below - same piano, bridge end. Wrap positioning very even.



Terry Farrell

On Jan 7, 2011, at 7:25 AM, Brian Trout wrote:

> Just outta curiosity, what did the other end look like?  Were the  
> wrappings done in "long-short-long-short, etc" fashion all the way  
> down through the bichords?  Or were they offset kinda like they  
> would be if put on in the wrong order with staggered hitch pins?
>
> Inquiring minds...  ;-)
>
> Brian
>
> From: mfarrel2 at tampabay.rr.com
> To: pianotech at ptg.org
> Date: Fri, 7 Jan 2011 06:49:28 -0500
> Subject: [pianotech] Bass String Length Mismatch Tuning Trouble
>
> I don't have much experience with un-equal length bass string unisons
> that can't be tuned beatless being fixed with new equal-length
> strings. Has anyone done this, and can anyone offer an experienced
> opinion on whether lengths of a couple millimeters difference in the
> wrapped speaking length in a pair of unisons would commonly present
> tuning problems? Needless to say (I think?), I found all the bicord
> pairs in the picture below to be impossible to tune beatless - the
> best I could do was leave most of 'em with slow roll. A few were a
> fair bit worse. The wrap terminations are at the same position (equal
> distant from speaking bridge pins) at the bridge end, thus rendering
> unequal wrapped speaking lengths.
>
> The work on this Baldwin F blew me away - it was "rebuilt" by a
> company that is quite arguably the most respected in my area (or at
> least best known because of brand affiliation).
>
> If you ordered a set of strings, installed them and saw this, wouldn't
> you send the back to the string maker (after checking your
> measurements again to make sure you didn't provide bogus data)?
>
> Terry Farrell
>
>
>

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