This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Now I haven't tried this, so I may well be speaking out of ignorance, = but I have a reasonable concept of how much flange friction there will = be with 3-4 grams of resistance. A jack weighs almost nothing. Seems to = me if the jack needs to swing freely 7 full swing cycles, that would = require almost no friction in the center. Three to five grams friction = in an action center with a shank and hammer hanging from it will swing = maybe three full cycles - and that has tons more momentum. Seems like = something may not be right here??? Terry Farrell > Hi Julia, >=20 > You can't bake a cake without a pan. Get a gauge--get the best one you = can > afford. There is a swing test as well. There are two ways to count the > swings. 7 full cycles or 13 back and forth. Good luck. >=20 > Regards, > Don Rose > Check the jack center pins to 3-4 grams of friction and for firmness ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/cf/60/c2/e0/attachment.htm ---------------------- multipart/alternative attachment--
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