Hi Richard, It's a vertical model, HO,HO, HO. (smile) Regards Roger At 06:38 PM 09/12/99 +0100, you wrote: >I dont recognize this model number.. but I assume its a small grand diskplayer >?? > >If so.. it strikes me that these weight figures you report are not sooooo >awfull that you couldnt bring them down to acceptables with a few good old >standard tricks like reducing hammer weight a bit, and protecking the damper >centers. That B7 is pretty darned high but there is usually some easy to fix >cause for the occasional way out of limits key. > >I'd first try a few spot checks to see what you can do with regulating and >hammer weight. Check the geometry as well, but you know all that. As for the >friction.. almost looks like you got to little in a few places.. or what ?? >Does the action play kinda sloppy ?? > >Richard Brekne >I.C.P.T.G. N.P.T.F. >Bergen, Norway > >Tom Cole wrote: > >> Dear List, >> >> I tuned a Yamaha MX100A (1988) today that had a touchweight problem I >> found curious. It was the first thing the customer remarked about so I >> did some investigation. >> >> I noticed right away that the dampers picked up early but, with the >> dampers picked up by the pedal, the up and down weights were too high as >> well. >> >> NOTE DW UW >> >> C2 53 34 >> C3 57 36 >> C4 60 36 >> C5 64 38 >> C6 62 38 >> C7 62 39 >> B7 75 41 (C8 felt like it had a mechanical problem) >> >> There doesn't seem to be a friction problem and so the simple solution >> would seem to be to put lead weights in the keys to bring the >> touchweight down but I've never seen a Yamaha that was so out of >> regulation. Is there something about early Disklaviers that I need to >> know? Could this particular instrument have come from the factory that >> way? >> >> Unfortunately, I didn't think to pull out some key sticks to see if >> someone had pulled out the key leads. I did glance down the side of some >> Bs and Es in the bass to check for key leads and didn't see any nor any >> empty holes. >> >> The present owner bought it 3 years ago and the touch was heavy when she >> first got it. So far, two technicians have not been able to help her >> out, one of whom was a Yamaha tech. >> >> Thought I'd run it by the list before getting the lead out. Can anyone >> comment on this weighty subject? >> >> Tom >> -- >> Thomas A. Cole, RPT >> Santa Cruz, CA >> mailto:tcole@cruzio.com > Roger Jolly Saskatoon, Canada. 306-665-0213 Fax 652-0505
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