It's a Puzzlement!

[Richard Brekne]

---------------------- multipart/alternative attachment
I'm not quite sure what you are saying... by "Most of the U/D weights are in the
16 to 20 difference. However, there are 24 notes that are
just way out of spec."  but if you are saying that DW minus UW is in the 16 to
20 gram range except for these 24 notes... then I think it be easier to help if
you could put the numbers in terms of BW and Friction.

If Balance Weight varies radically, then that points to inconsistancies in ratio
related issues. You could be looking at some knuckle allignment problem... not
uncommon when a bolstering job is done... and not uncommon otherwise.... Maybe
the capstan line is a bit uneven as well... you know the sort of thing. At the
stage you are with this job, I like to rule out ratio related problems before
attacking friction stuff any further.

Cheers
RicB

Joseph Garrett wrote:

> Hey all,
> I'm trying to get the touch of a two year old M&H "BB" within limits of
> Upweight/Downweight. I've checked ALL of the pinning, it's in specs. I
> properly eased all the keys, they're in specs. I buffed the capstans and
> coated with Emralon. The Wippen Foot Felt and the Let-off Felt has been
> treated with dry Teflon. The hammers were surfaced. The knuckles were
> bolstered, strip sanded and treated with Microfine Teflon. The hammers tails
> were surfaced. The key pins were cleaned, polished and sprayed with dry
> Teflon. The action has been Regulated to a gnat's eyebrow. Most of the U/D
> weights are in the 16 to 20 difference. However, there are 24 notes that are
> just way out of spec. These notes are interspersed through out the whole
> action.
> I've checked everything, I can think of, and am at a lose. Feedback would be
> appreciated!!!!
> I was up til' 4am finishing this thingee, so I may be missing something!
> Help! Gotta return the action this afternoon! :-(
> Best Regards,
> Joe Garrett, RPT, (Oregon)
> Captain, Tool Police
> Squares Are I
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives

--
Richard Brekne
RPT, N.P.T.F.
UiB, Bergen, Norway
mailto:rbrekne@broadpark.no
http://home.broadpark.no/~rbrekne/ricmain.html
http://www.hf.uib.no/grieg/personer/cv_RB.html


---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/f4/f9/42/02/attachment.htm

---------------------- multipart/alternative attachment--