slow returning hammers

[Joe And Penny Goss]

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Hi Isaac,
I read into your post that you do not use Ballistol.
In my testing of the mineral oil I have found that it should NOT be used =
on centerpins. It is however great on leather front and balance rail =
pins that use leather for the bushing.
Using Ballistol on felt in this area swells the felt arround the pin =
causing more friction at the end of both forward and at rest positions.
Ballistol is also very good in lubricating heavy wear points like trap =
work and damper rod hinge bushings even though felt may be the bushing =
as the return spring device is much stiffer.

No one out there using Goose Juice?

Joe Goss
imatunr@srvinet.com
www.mothergoosetools.com
  ----- Original Message -----=20
  From: Isaac sur Noos=20
  To: Pianotech=20
  Sent: Sunday, December 21, 2003 3:38 AM
  Subject: RE: slow returning hammers


  Protek experience : after a few weekswhere the parts seem to be free =
the sluggish hammers are totally blocked, then you have to do what was =
necessary in the first place, repin. German techs use Ballistol, some =
(cheapo's)use WD40 ( the flanges are contamined afterthat, good luck for =
repinning , changing them may be necessary)

  With humidity it is fairly possible that corrosion is installed on the =
pin, (with time also, and that the nicel plaiting is worn).
  No lube can work in this case.unfortunately.
  May be the springs are too weak to help, may be also the action =
position does not help the hammer to come back.
  As others have say you have to be sure of where the problem come from =
in the first place (and avoid also too free pinning ).

  May be ke keyboard is pushing on the whippens too much and the hammers =
have been lightened by filing, then the initially slow action became =
sluggish.

  Repinning is not that long, but all the traveling and aligning of the =
hammers afterthat turns it to a larger job that that...

  Hope that helps.

  Isaac OLEG




                         Pianotech=20
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                          Isaac OLEG
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Ferry
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    -----Message d'origine-----
    De : pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]De =
la part de Alpha88x@aol.com
    Envoy=E9 : dimanche 21 d=E9cembre 2003 05:32
    =C0 : pianotech@ptg.org
    Objet : slow returning hammers


    Greetings,

                I went to a home where there was a Chickering console =
piano that the hammers return at a snail's pace after the key is struck. =
I suggested that the hammer bushings around their center pins may be =
swelled due to humidity resulting in tightness and friction causing the =
slow motion return.  He had a heater bar in the piano and I suggested =
that he plug it in to dry up some moisture. He did. Two weeks later he =
calls and tells me it only helped allittle and the thing is still =
unplayable.=20

                 I am thinking that the only thing left to do is to =
bring the action home and put it near a radiator so they dry out, and =
give each pin a shot of protek. Any other suggestions?=20

    thanks,
    Julia Gottchall,
    Reading, PA=20





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