Rodger and list Just to weigh in on this one let me state that my Dad was a yamaha dealer for 20 yrs. I first started seeing the de-plating problem in pianos from the 1976ish area but center pin plating failure isn't bound by time and I still see a case from time to time. I'm guesssing I've repinned a dozen or so actions. Primarily the hammer flanges but also several entire damper lever systems as well. Yamaha was always very good about warrantying that which was under warranty and once a bit beyond that. Regards Dale Erwin ----- Original Message ----- From: "jolly roger" <baldyam@sk.sympatico.ca> To: <pianotech@ptg.org> Sent: Sunday, August 12, 2001 10:19 AM Subject: Re: Small Bridge Pin Source > Hi Joe, > Try Wally Brooks at a starting point, or Lloyd from Renner. I > would love to have a steady supply of Geman Silver pins. > The supply house's seem to be hit or miss with their supplier's. > The last batch of #21's I ordered were brass with plating. (from a > Japanese supplier) I sent them back. The supply house asked what was > wrong. When I told them of pin failure due to the plating coming off. I > was politely told I was being 'picky", and that it's the first they had > heard of problems. > Change a set of 15yr old Yamaha underlever pins, and expect to do the job > again in 15yrs. I don't think so. > Climatical conditions will have a significant effect on how long those > plated pins will last. > > Just some thought's on the topic. > Roger > > > > At 08:50 AM 8/12/01 -0600, you wrote: > >Hi, > > Along the same lines, does anyone know the MANUFACTURER of crnter pins? > >Addresses would help too. > >Joe Goss > >imatunr@srvinet.com > >www.mothergoosetools.com > >----- Original Message ----- > >From: "Farrell" <mfarrel2@tampabay.rr.com> > >To: <pianotech@ptg.org> > >Sent: Saturday, August 11, 2001 8:02 PM > >Subject: Re: Small Bridge Pin Source > > > > > >> Ahhhh. That's what I was looking for! Thank you so very much! > >> > >> Terry Farrell > >> > >> ----- Original Message ----- > >> From: "jolly roger" <baldyam@sk.sympatico.ca> > >> To: <pianotech@ptg.org> > >> Sent: Saturday, August 11, 2001 5:51 PM > >> Subject: Re: Small Bridge Pin Source > >> > >> > >> > > >> > Terry, > >> > High quality centre pins, I believe is German silver. A > >mixture > >> > of tin and brass. The tin prevents tarnish. many of the asian pins are > >> > plated mild steel or brass, and are problematic with age. Some American > >> > pins are brass, more prone to verdigris. > >> > Bridge pins are usually mild steel plated with Phosphor bronze to lower > >> > friction. Some of the Japanese companies are using brass alloys. > >Koreans, > >> > look like chrome plated steel. > >> > There is very little standardization. and cost is probably the driving > >> > force for selection. > >> > If I was specing these two items, it would be German Silver for centre > >> > pins, and Phosphor Bronze coated steel for bridge pins. > >> > Bridge pins would not be file finished, but drilled accurately to depth. > >> > > >> > Just my observations and opinions. FWIW. > >> > Roger > >> > > >> > > >> > At 06:14 AM 8/11/01 -0400, you wrote: > >> > >Can anyone give us a good accounting of what action center pins and > >> bridge > >> > >pins are made of? I think Ron N suggested this as a possibility also. > >> Thanks > >> > > > >> > >Terry Farrell > >> > > > >> > >----- Original Message ----- > >> > >From: "Richard Brekne" <rbrekne@broadpark.no> > >> > >To: <pianotech@ptg.org> > >> > >Sent: Wednesday, August 08, 2001 2:25 PM > >> > >Subject: Re: Small Bridge Pin Source > >> > > > >> > > > >> > >> I dont suppose you can use really large center pins ? Like say size > >26 > >> or > >> > >so > >> > >> ?....just a thought. > >> > >> > >> > >> Farrell wrote: > >> > >> > >> > >> > Hi folks. I am repinning the bridges on an old square grand today > >(or > >> > >rather > >> > >> > I was) when I realized I do not have the proper size pin for the > >> treble > >> > >> > area. The old pins were 0.068" diameter. This would be a about a #5 > >> pin. > >> > >I > >> > >> > checked catalogs from Pianotek, Schaff & APSCO and the smallest > >pins > >> > >they > >> > >> > have are #6 pins which are 0.076" diameter. It is super tight > >> quarters > >> > >in > >> > >> > this area of the bridge, and I fear that using the #6 pins may > >cause > >> > >> > problems. Anyone know of a source for #5 pins? > >> > >> > > >> > >> > Terry Farrell > >> > >> > >> > >> -- > >> > >> Richard Brekne > >> > >> RPT, N.P.T.F. > >> > >> Bergen, Norway > >> > >> mailto:rbrekne@broadpark.no > >> > >> > >> > >> > >> > > > >> > > >> > > > > >
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