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Re: Questions about key bushings.Thanks Ed,
Did you use Renner leather, kanguroo (who sell it )?
I believe the wear is not really an option, do you follow that instrument,
is new Ballistol application necessary sometime ?
Friction certainly appears more on short keyboards, I wonder also about
using leather on brass key pins, may be with time the key pin is wearing
more than usual.
I seem to recall that the German pianos with leather bushings have iron pins
(and not bras plated ones) , but I am unsure of that.
Any idea welcome.
Nowadays I'll do that as an experiment, and we have the opportunity to look
at the wear and compare between similar instruments.
It is unrealistic to expect the schools to pay 300$ and more every 3 or 4
years for new key bushings at this moment, but for sure I will include that
in the maintenance course.
Best Regards.
Isaac OLEG
Entretien et réparation de pianos.
PianoTech
17 rue de Choisy
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
cell: 06 60 42 58 77
-----Message d'origine-----
De : Ed Sutton [mailto:ed440@mindspring.com]
Envoyé : vendredi 18 avril 2003 00:34
À : oleg-i@wanadoo.fr; College and University Technicians
Objet : Re: Questions about key bushings. - bushing material -tools
Isaac-
I've used leather keybushings, and have found that 2 or 3 applications of
ballistol are needed for free movement of the front keybushing. This was
not for noise, but due to performer's complaint of too much friction.
Balistol is promoted as a leather preservative. I've found leather front
keybushings in German pianos of the late 19th century in remarkably good
condition.
The keypins, of course, were beautifully smooth and polished.
Ed S.
----- Original Message -----
From: Isaac OLEG
To: Vincent E. Mrykalo ; College and University Technicians
Sent: Thursday, April 17, 2003 4:58 PM
Subject: RE: Questions about key bushings. - bushing material -tools
Hello Vincent,
I asked around me, nobody tells me that he uses oil (Ballistol or such)
on leather bushings, neither in Bechstein factory or elsewhere.
I was told on the contrary that the leather needs less side play than
the cloth, but that when it takes a slight amount of play it will be more
noisy soon.
My main concern is using it on the front key bushings, I don't recall
having seen that done on any instrument, I guess the friction may be high.
I also have been highly praised the good quality clothes with nylon (or
?) inside that comes from Japan, as to be a material of choice for bushing
work (info from a friend, tech for the Paris school of music, he does 40
key bushings set/year approximatively)
By the way he tells me to use some acid oxalic if precedent bushings
have been glued with a hard white glue, a pass with a damp rag and an iron
using this acid (don't smell the fumes) soften the glue fast he tells me.
Another useful information is that cork grease is not acid so it
eventually is better than mutton tallow for leather/metal lubrication. I
don't use it on key pins nowadays, only Teflon spray, and a very good
quality I have from Sweden (McLube 125).
He also tells me he made 3 complete keyboard sets with the OLIAG/JAHN's
key restoration tool (same kind than the Onesti tool but guided by the
cylindrical hole in the key) and he have a perfect font to back placement
and centering. But he made himself the wood washers, the ones sold
originally with the tool are totally useless (too soft wood).
Greetings
Isaac OLEG
Entretien et réparation de pianos.
PianoTech
17 rue de Choisy
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
cell: 06 60 42 58 77
-----Message d'origine-----
De : Vincent E. Mrykalo [mailto:mrykalve@potsdam.edu]
Envoyé : jeudi 17 avril 2003 15:43
À : oleg-i@wanadoo.fr; College and University Technicians
Objet : Re: Questions about key bushings.
Isaac,
Do you use Balastol on the renner leather? They do recommend that, as
that may help the noise problem. The one thing about leather is that they
need to be eased a little more drastically than felt, so you can't get as
snug a fit.
Dear colleagues,
I have just seen the 20 instruments that are in a little school I
will work for next year.
These instruments are 30 to10 years old. Since 3 years, a lot of
work have been done on almost all instruments, so many have been repined,
new strings on some, actions refurbishing, new key bushings.
The problem lies on these last, all the key bushing jobs are showing
a lot of side play, and even front to back play in some case. I was
wandering how an other while relatively decent (but not too expensive !)
repair job could turn in a so inefficient result. May be the bushing cloth
used was very poor, but, as even the one which are less worn are noisy, I
suspect that white glue or Titebond have been used for the gluing, causing
the hardness of the felts and the fast worn out.
I consider using leather, for the schools now, I made a few sets on
the balance mortise, and find the job to be not very different. Indeed the
leather (Renner) is a bit more noisy, but I prefer that to have to sell
bushing work every 4 years.
My question was about using leather in the front mortise, and if
every kind of key pin will accept the leather bushing. For instance brass
key pins may be will be worn out by the leather more than by the felt, so
the play will be there , finally.
Is not leather in the front bushing really to hard and noisy under
the fingers ?
I've heard that some of you use kangaroo leather , where is it sold
? any feedback ?
I was pleased with the 2 sizes of the Renner bushing, on the
Bechstein and the Bšsendorfer I made I did not thin the leather it was very
accurate ti begin with (and I did not use any oil on it, as someone wrote
once, too afraid to have dirt and may be squeaks with this method).
Thanks in advance
Good Easter day to all, Pessah for some !
Isaac OLEG
Isaac OLEG
Entretien et rŽparation de pianos.
PianoTech
17 rue de Choisy
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
cell: 06 60 42 58 77
-----Message d'origine-----
De : caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]De la part
de Wolfley, Eric (WOLFLEEL)
EnvoyŽ : mercredi 16 avril 2003 18:01
Ë : 'College and University Technicians'
Objet : RE: Bass string fest
I just checked·weâve replaced 16 bass strings since school started
at the end of Sept· not too bad, considering. Most of this breakage is in
the piano major rooms where the pianos do get pounded on. Obviously I donât
place an order with Mapes every week, though I check.
~~~~~~~~~~~~~~~~~~~
Eric Wolfley
Head Piano Technician
Cincinnati College-Conservatory of Music
University of Cincinnati
~~~~~~~~~~~~~~~~~~~
-----Original Message-----
From: Wimblees@aol.com [mailto:Wimblees@aol.com]
Sent: Wednesday, April 16, 2003 11:40 AM
To: caut@ptg.org
Subject: Re: Bass string fest
In a message dated 4/16/03 10:20:10 AM Central Daylight Time,
WOLFLEEL@UCMAIL.UC.EDU writes:
I do a pass through the practice rooms approx.
once a week and place an order with Mapes.
This is interesting. I've been here at UA for almost 2 years, and
I have had two bass strings break. Either you guys have harder players, or
I'm extremely lucky. How many bass strings to some of you replace per
week/year?
Wim
--
Vince Mrykalo RPT MPT
Senior Piano Technician
Crane School of Music
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