Dave, How is the roller far from the pin (16mm, or 17 mm) ? Your piano where probably at first with 16 mm distance and 9 mm roller, it is sometime necessary when 17 mm /10 mm parts are installed to shim with a very thin cardboard between the top of the whippen flange and the rail, so the roller is in a better orientation against the repetition lever. I have used this process and it works, but don't go to far from 113 mm spread if you don't want the action to feel mushy. I generally use 0.4 mm x 2mm large cardboard (and it compress). I've find cardboard shims on some original actions coming from the factory (Hamburg) Regarding the Abel parts, they weight generally less in the bass than modern ones, and yes the tails may be a little short, but they are probably more weighty than the original shanks/hammers (1 - 1.5 g more) If you have curved too much the back of the tails you will need to reset completely the backchek angle to obtain an acceptable checking. And last, did you check the tubular frame precisely ? If the drop screws are not all approx the same height there is a problem there , you can see that too lifting up one corner of the keyboard and looking at the way the action deforms. If the stack is bad it will twist as soon as you lift it, if not you will not be able to lift more than one inch the corner before the third left of the action moves , anyway you can see that with a flashlight too. If the whippen are original, the springs are generally not strong enough to modern parts even with 17 mm roller. Hope it helps, check the shimming on a few notes and see if enough up weight and spring force remains. I've find the round bushing felt quality under the keys to be of primary importance (as the checking) for the global perception of the piano. I use Steinway original large bushings or Yamaha ones, all the other makes I have are not large enough and too mushy. With best regards. Isaac OLEG Isaac OLEG PianoTech 19 rue Jules Ferry 94400 VITRY sur SEINE FRANCE tel : 033 01 47 18 06 98 fax : 033 01 47 18 06 90 cell: 06 60 42 58 77 > -----Message d'origine----- > De : owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]De la part > de David Renaud > Envoyé : dimanche 13 janvier 2002 18:17 > À : pianotech@ptg.org > Objet : Steinway M/rollers/touch > > > Steinway M, new strings, pinblock, hammers...so on. > Client insisted on keeping action parts for now, > save some money. > > Spent yesterday leveling/seating string, sound > came up nice. > > > Problem: > Remains heavier then I'd expect for what is done. > Able hammers with mahogany moldings shaped as much > as I normally would. > Some sample downweight is around 54-55g, > upweight around 36. > I want 50 but am reluctant to take off more before > more thinking. I havn't had to do more shaping before > then I've already done now. They sound great, a reason > why I am not anxious to remove more weight > I listened as the weight came off, and like > where they are tonally now. Not anxious to make them > lighter and brighter, and I have not juiced them. > > I'm questioning if the rollers(not original) are > oversize, and this is causing problems. Also, > whomever changed them did not glue all rollers in > perpendicular to the shank, nor to the bottom of the > slot. They were gummed up with graphite goop. Cleaned > as best possible. They are somewhat flat. > > Does anyone care to comment on > > 1) The effect of oversize rollers.....how much > difference in grams have some experienced. > > 2) the effect of crooked rollers, how much variation > in touch weight have you seen this cause. > > 3) Chastizement for trying to save these shanks > may be deserving. > > 4) And one other problem. I purchased Able hammers > advertised by a supplier as "replacement for > Steinway...26 bass". > The tails are barely long enough to check, The > backchecks were changed at one time.(its a 1927 M) > If I unscrew them a bit I can just get them to > work, and I'm not getting much tail contact. I did > curve tails but not shorten them at all. > > I've rebuilt enough grands, and had enough success > to know this feels different, I suspect when I test > one shank with a new roller I will become happier. > > Ask away, or fire away, flamesuit ready in case. > I am going to fix this....thinking. > > > Dave Renaud > RPT > > PS: Many thanks to contributing list members, > your input does help raise standards....still > learning. > > > > > > > > > > > ______________________________________________________________________ > Web-hosting solutions for home and business! http://website.yahoo.ca >
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