Addendum, each hammer shank has a wood piece extending down w/ a wire that inserts into the key, also a slot w/ a spring coming up from front of key w/ 90 deg. bend backwards that is snapped into the wood extension of hammer shank from left. All 88 hammers must be removed by disconnectig all 88 springs, then removing top action or, undo all 88 springs then lift off top action. Leaving, when setting topaction back on, all 88 hammers will be sticking up until the wire extending down has been insertid into each 88 keys, then springs snapped back in. On Sat, Oct 31, 2009 at 10:05 AM, Jim Henson <a1propianos at gmail.com> wrote: > I'd also like someone to comment on removing the top action. I was able to > do what was necesarry by removing key spring from jack & removing hammer > flange/shank. But removing top action could be a pain to re-install. > > On Sat, Oct 31, 2009 at 10:02 AM, Jim Henson <a1propianos at gmail.com>wrote: > >> I service an older rebuilt grand for a Hist. Society Museum in the Dallas >> area. It is located in an 1800's something church,(pre-modern construction >> etc.). After the first year or two I noticed mold(white), forming on the >> inside of rim & underneath. They have since installed an air regulation >> system to protect the building which has helped w/ mold reduction, but from >> time to time it still creeps up. The mold appears on the finish(lacq.) & on >> sdboard. Has anyone dealt w/ this/solutions. I use steal wool/napthta & >> lightly remove, but will @ some point run out of finish. In all articles >> researched in journals/seminars thus far no acceptable solutions short of >> refinishing which is not needed. Just preventing re-occurring mold. Also, >> since Ive got my bathing suit on, here's another one for anyone out there. >> Last week I serviced a cust. which oens an 1895 Bluthner Alliquott grand. >> For many years it was in New Orleans. After arriving in Dallas in 2004, >> cust. had me out to tune & all things were well. Last week several keys were >> catching on each other. Upon inspection it appears/best guess is that after >> climate change/re-location keys were drying out & shrinking causing leads to >> back out & corrode. I lightly removed approx. 80 key leads removing >> lead/corrosion. 4-5 had begun to split & I suggested I inspect during next >> tng. I suggested that after 5 yrs. keys may not shrink anymore. Can anyone >> give a discourse on the Aliquott grands. Tuning etc. No articles found. >> After calling a few local heavyweights, consensus is tune the sympathetic >> string 1 octave higher that unison. I'd love to hear a little bit on the >> thinking/creative design behind this. These sympathetic strings sounded >> pretty dead, no resonance. >> >> >> On Fri, Oct 30, 2009 at 4:28 AM, <david at piano.plus.com> wrote: >> >>> John's suggestion about the sand blaster and glass beads sounds ideal, >>> because it really would clean the action, and "get the corners". >>> >>> If you don't have a compressor etc, however, cleaning by hand using any >>> of >>> the branded anti-mold products that you can get in hardware stores should >>> be ok. >>> >>> I'd be inclined to wear a face mask if the growth is heavy. Although, if >>> you are cleaning with a solution on a damp cloth, hopefully not much will >>> get liberated into the air, and most will be taken up on the cloth. >>> >>> It's important to consider future prevention. For this mold to have >>> grown, conditions must have favoured it. The piano must have been in a >>> damp room, with moisture condensing inside it. Occasional use of the >>> piano in a room that is itself only occasionally used, (and only >>> occasionally heated/ventilated) are likely factors. >>> >>> It may be a good idea to suggest a Dampp Chaser. This will keep the >>> piano >>> warmer than the surrounding air in the room, so that moisture will not >>> condense into the piano in future. >>> >>> Best regards, >>> >>> David Boyce >>> >>> >>> >>> >> > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091031/eb8992c6/attachment.htm>
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