At 07:27 PM 7/19/99 -0500, you wrote: >Thanks Newton, > >I'll get some weights and fiddle with it. I guess I don't read too well. >Re-reading your post I now see that it should have been F#s. > >One thing I was wondering about. I replaced the whippen cushion. If the new >material was slightly thinner than the original stuff, then the capstan >would have to be raised and would no longer be on a line between the balance >rail pin and the whippen center pin. Perhaps that has caused the increase in >weight. Does this apply to upright actions, the line betwixt br hole and wip cp for capstan/cushion? I'm not familiar with the geometry of an upright action and David Stanwood's studies apply to grands. They probably can be transferred to verticals but it's a lot of work for an upright. But if you want to pursue it, start with the hammer spring tension, they need to be strong enough to push it back, not too forcefully though. I installed new springs once and had the reduce the tension as the DW was too high. Adding lead to the front can compensate but not to overcome excessively heavy springs. Springs first. Someone with direct knowledge of vertical regulation in regards to spring tension will hopefully chime in soon. Regards, Jon Page >Thanks for your help > >Terry > >At 08:09 PM 7/19/99 -0400, you wrote: >>Don't worry about the friction, it floats around a lot from season to >>season. Get some 1/2" weights and try to get a few down into the ball >>park and see how it feels. That is the ultimate test. Get your books >>and papers out and especially what David Stanwood has to say. >> >>This piano being what it is I would suggest going ahead and touch >>weight it out and don't worry about the friction or the spring tension >>unless they are bent out of shape. Too high a tension on the springs >>can be a touch problem but if they feel OK then go for the balance >>weight. >> >>Good weighing but you checked Fs not F#s. It is good to take >>measurements of both naturals and sharps to see if there are >>substantive difference between the two. >> >> Newton >> >
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