This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment I would like to hear more on this also David. My guess is that static DW = & UW would not be affected much, but I should think there would be some = significant potential to affect inertia with different weight hammers. Terry Farrell =20 ----- Original Message -----=20 From: David Love=20 To: pianotech@ptg.org=20 Sent: Friday, October 12, 2001 4:10 PM Subject: Re:=20 I wasn't so much thinking about 14lb vs 16 lb. I realize the = difference hammer to hammer is minimal. I was more thinking about = moulding, size, etc.. I assume the hammer weight is less significant = than a grand because of the hammer's relative position to the lever and = the fact that it travels horizontally rather than vertically. In a = grand the relationship is generally 5 or 6:1. I was wondering if there = is such a general ratio for an upright or if it is even significant. As = I suspected, it seems relatively insignificant. David Love ----- Original Message -----=20 From: Wimblees@AOL.COM=20 To: pianotech@ptg.org=20 Sent: October 12, 2001 12:36 PM Subject: Re:=20 In a message dated 10/12/01 1:19:36 PM Central Daylight Time, = davidlovepianos@earthlink.net writes:=20 Generally, how does a change in the weight of an upright hammer = effect the touchweight.=20 David Love=20 Because the hammer is at the end of a stick that has to be moved by = levers, etc., there will be an effect on touchweight. However, the = difference in the weight of the felt on a hammer is not going to make = that much difference. I don't think you will be able to measure the = touchweight difference between a set of 14lb hammers and 16 lb hammers.=20 In case you didn't know, when you buy a set of 14 lb hammers, that = is the weight of an entire sheet of felt, out of which 6 or 8 sets of = hammers is cut. A set of 16 lb hammer comes from a sheet that weighs 16 = lb. So by the time you get down to one hammer, the actual weight of a = hammer is going to be virtually insignificant. If you want to reduce the = touchweight of a hammer, removing the wood on the hammer, or the shank, = will make more of a difference than replacing a 16 lb hammer with a 14 = lb hammer.=20 I hope I explained it right.=20 Wim=20 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/85/7c/13/e9/attachment.htm ---------------------- multipart/alternative attachment--
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