> On Sep 13, 2008, at 1:34 PM, Kendall Ross Bean wrote: > >> I think there might also be some confusion here because Wurlitzer >> apparently used two different configurations for these iron pinblocks. >> The one I am working on uses a machine screw with a relatively fine >> thread to hold the tuning pin in from the back (or underside on a >> grand), but you brought up a good point: there was also a design that >> used wedges, and a tuning pin that was split at the bottom to accept >> the wedge, which wedge could then be pounded in further to tighten the >> pin (which design I have also seen in my travels, but unfortunately >> don't have a picture of.) > I've got a customer with that other system. If I return to it this fall I'll try to remember to take my camera... Anyhow, it has a split pin with a wedge _and_ ,if I recall correctly, a collar nut to keep the wedge in place. Kinda like the system of those hammer shank reducers. My memory could be off a bit on this, as the last time I peered under was many years ago. The pins are as tight now as they were when I first tuned it, more than 20 years ago. (The soundboard drains better, but the pins are tight...) -- Conrad Hoffsommer, RPT - Keyboard Technician Luther College, 700 College Dr., Decorah, Iowa 52101-1045 1-(563)-387-1204 // Fax 1-(563)-387-1076 Remember that, while money talks, CHOCOLATE SINGS!
This PTG archive page provided courtesy of Moy Piano Service, LLC