---------------------- multipart/alternative attachment In a message dated 4/3/04 10:05:04 AM, edwithen@oregontrail.net writes: > The balance rail seems to be correct and bedded on the key bed.=A0 The=20 > balance rail felts are good, and appear to be sufficient in thickness >=20 Ed Do you have The Piano Action Handbook by Randy Potter? This book contains=20 the Manufacturer's Regulation Dimensions which should help you to diagnose=20 situations like this. Key Height, Sharp Height, Hammer Blow, Hammer Let O= ff,=20 Key Dip, Back Check Distance and Drop (on grands) are detailed for each=20 manufacturer of pianos. Looking under Kimball, for example, I find that th= e Key=20 Height, depending on the model, varies from 2 3/8 inches to 2 3/4 inches. =20= That's=20 a difference of 3/8"! So when you say that the balance rail "seems to be=20 correct", I wonder if you have measured the key height and compared it to th= e=20 Kimball's specifications. It sounds to me as if you have diagnosed the problem correctly, but to be=20 sure I would look it up in the PAH. Either shimming up the balance rail OR= =20 lowering the front rail would increase key dip. This book is available from the PTG, I believe, and is worth every penny. Tom Sivak Chicago ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/f6/8f/27/21/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC