Gulbranson Console & Knabe Grand Qs

[DCrpt@comcast.net]

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This reply is about the Gulbranson.Was there a ceiling fan running in the room where the piano was?That can make the sound you described.    Robin Olson

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> I recently brought a Gulbranson Console back up to pitch and tune. I 
> encountered a curious phenomenon that I'd like to delve into. When I 
> brought the unisons into tune I would eliminate interference beats but 
> would open up another quaver (the best I can describe it) that was 
> consistent throughout the mid treble. I tried re-tuning several times and 
> it opens up only when the unisons are well in tune and the intervals sound 
> OK except for the quaver in the notes. The speed, fast, was fairly 
> consistent from one note to the next. 
> The customer stated that this was the best her piano had ever sounded, was 
> ecstatic, so I didn't bring that up. I'd just like to be armed with some 
> ideas for next time I encounter it as I hate it. 
> 
> The next piano that day was a Knabe 6' grand and quite a joy to bring 
> 25cents plus up to pitch. It had four/five pins at the bottom of the bass 
> driven so the coils were all the way to the plate. I CA glue treated them 
> and some notchy pins at the high treble. I'm wondering if it is possible 
> to ream the holes a little and shim with sand paper without breaking the 
> coils. I'm thinking of loosening the tension on those strings and then 
> driving the pin out from the bottom. Problem is, is it possible to drive 
> it back in with shims? Or can those heavy bass strings be unwound from the 
> pin and reinsterted without breakage? 
> 
> Be-quavered in New Mexico 
> Andrew 
> 
> _______________________________________________ 
> pianotech list info: https://www.moypiano.com/resources/#archives 
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