Yes! Thanks Wim and Fred. I've done this to change spread a bit on grands. I'll try that out. I also thought Jack Wyatt's "turbo charging" method may help but have never tried it. Thanks. Jim Busby BYU ________________________________ From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Willem Blees Sent: Thursday, October 11, 2007 2:22 PM To: caut at ptg.org Subject: Re: [CAUT] Upright geometry problem (Nordiska) Jim I had a similar problem with a Brentwood piano, (about 15 years ago, and a very cheap Chinese product). Instead of moving the capstans back, I added cardboard balance punchings between the wippen rail and the bracket, to move all the wippen heals closer to the balance rail. I don't know if that will be enough on the Nordiska, but you could give it a try. (It's at least a lot easier than moving all the capstans, and it's reversible.) The other thing you might want to try, again, if there is enough room, is to add a little more felt to the jack stop on each butt. Willem (Wim) Blees, RPT Piano Tuner/Technician Honolulu, HI Author of The Business of Piano Tuning available from Potter Press www.pianotuning.com -----Original Message----- From: Jim Busby <jim_busby at byu.edu> To: College and University Technicians <caut at ptg.org> Sent: Thu, 11 Oct 2007 9:20 am Subject: [CAUT] Upright geometry problem (Nordiska) List, I've never had to do a major geometry tweaking of an upright, but this new Nordiska needs help and maybe you have some ideas; Problem: Bobbling hammers due to not enough aftertouch (Hammers are bouncing off jack. No space between jack and buckskin on any blow) As it stands here are the vital specs; Blow 42mm (Too short) Dip .450 (Way too deep) Letoff 1/8" Checking 5/8" (Lost motion has been regulated) If I make the let off 3/8" to 1/2 " it begins to work but this is obviously bad. More dip would make it work... (Anyone have a 12.5 mm dip block??) Less blow would also be ridiculous... Seems like I need to move capstans back. No? Any other wisdom out there? Thanks, Jim Busby BYU ________________________________ size=2 width="100%" align=center> Email and AIM finally together. You've gotta check out free AOL Mail <http://o.aolcdn.com/cdn.webmail.aol.com/mailtour/aol/en-us/index.htm?nc id=AOLAOF00020000000970> ! -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/caut.php/attachments/20071011/517228fe/attachment.html
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