This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment I had a problem with a console piano that was similar. I put small = jiffy leads on the back of the keys. Solved the problem. BUTTTTT, now = several years later I think it may have been tight action centers on the = whippen. Since it obviously worked when new, I doubt that drying out of = the keys would cause that much of a problem, but if the whippen flange = were creating drag the whippen would not be free enough to push the back = of the key down. Just a few grams of friction would cause that problem. Carl Meyer PTG assoc Santa Clara, Ca. ----- Original Message -----=20 From: Pierre Gevaert=20 To: Pianotech=20 Sent: Thursday, March 24, 2005 12:59 PM Subject: Re: Bergman upright action problems En principe c'est possible Pierrot ----- Original Message -----=20 From: Piannaman@aol.com=20 To: pianotech@ptg.org=20 Sent: Wednesday, March 23, 2005 7:39 AM Subject: Re: Bergman upright action problems Bruce, The problem is that there is too much weight in the front of the = keys for the weight of the action and spring tension combined to push = the key back into place no matter how much lost motion I take out of it = (I removed all I should have needed to and then some). This is not a = garden variety regulation problem, unfortunately. =20 Dave Stahl In a message dated 3/22/05 9:13:14 PM Pacific Standard Time, = justpianos@our.net.au writes: Hi, Missed the first part of this message, so this may be irrelavent, = but assume=20 this is an upright. Hence hammers should not be of the rail at all, and jacks should = not have to=20 force themselves under hammer butts as a gap should exist for = this. Even in a=20 grand the jack doesn't support the hammer roller, so regulation is = at fault. Bruce Browning - The Piano Tuner Piannaman@aol.com said: > Some pianos should just never be made.... > =20 > I think these are made in the Chinese Young Chang plant. They = look =20 > suspiciously like those little 107 jobbers that break jack = springs from=20 time to time. > =20 > First ("free") tuning presented a plethora of problems(Am I = almost as =20 > allitertive as Alan:-). The hammers were a good half inch off = the rail, =20 keys were=20 > tight, yada, yada, yada.... > =20 > The REAL problem was that the keyboard is so poorly weighted = that there is=20 > so much downweight in the black keys at either end of the = keyboard that=20 the=20 > action weight and springs can't hoist them back into position, = with damper=20 > pedal on or off. > =20 > I didn't take readings, but I could feel huge weight differences = from one=20 > key to the next. After everything was regulated as well as = possible, keys=20 > eased, keypins lubed, the jacks still could not force their way = back under=20 the=20 > butts, despite a healthy dose of teflon powder... > =20 > I stretched the jack springs to increase tension, though if I = had time I'd=20 > have replaced them with stronger ones. This seemed to get the = thing to=20 > function. > =20 > Short of pulling leads out of the fronts of the keys, any other = ideas =20 > helping this action? > =20 >=20 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/b9/0a/7b/57/attachment.htm ---------------------- multipart/alternative attachment--
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