Speaking of the springs, you might try cleaning and lubing the slot in the underside of the rep lever, and the curved loop at the end of the spring - if there's gunk under there, you could get intermittent hanging of the rep lever. -Mark Schecter Conrad Hoffsommer wrote: > Ed, > > , you wrote: > >>>> Grand piano actions work wonderfully with no lost motion at all. >>>> If there is any lost motion, there will >>>> never be a straight hammer line as well as accelerated wear of the >>>> knuckle >>>> from the impact of the jack hitting it rather than pushing it to >>>> start. >>>> We were taught at North Bennett to set the balancier so that we >>>> could >>>> feel the jack scraping, ever so slightly, across the leather of >>>> the knuckle when >>>> the hammer was at rest, and I have never had a problem with this >>>> causing loss >>>> of repetition. >>>> Regards, >>>> >>>> Ed Foote RPT > > > I agree with the method of setting the wink,('tis how I do it) however I > have to disagree with the conclusion that there is no lost motion. > > I believe that the scraping is felt as the _edge_ or corner of the jack > rubs as it leave from under the knuckle. As it stands at rest, with the > jacktop surface tangent to the knuckle curve, that there is a very small > amount of a gap. That little gap (paper thin?) amounts to lost motion > and is there for the same reason as that in an upright - to allow the > jack to reset for the next stroke. > > As you check the wink and trip the jack out from under, where does the > hammer go? If it goes back to it's original position, what is holding it > there? It can't be the jack! The only thing else under there is the > balancier/repetition lever. If the spring isn't strong enough, it drops, > doesn't it? > > Just my 2¢... > > > > > > Conrad Hoffsommer > > All I ask is a chance to prove that money can't make me happy. > > >
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