> This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ---------------------- multipart/alternative attachment Francis, On uprights with excessive down weight, I try and figure out why it is heavier than desirable. If it is poor geometry (key ratio for example) it is an uphill fight. Weakening the damper springs works well if the manufacture did not adjust them when it was built, and the spring strength is excessive. On a fine instrument, I hesitate...and try and figure out why why why. Practial ways... 1- Reduce the blow distance 2- Set let-off close, so as to squeeze as much efficency out of the key stroke as possible 3- Reduce friction (clean or polish) the keypins, teflon powder the balanc= e rail and front rail bushings 4- Clean or polish the capstan and teflon the contact felt 5- Check the fit of the balance rail hole 6- Check the damper timing...if it is early, thats not good 7- A little touch-weight reduction could be acheived by reducing the friction at the hammershank flanges 8- Some uprights allow the capstan to be bent toward the balance rail, thus improving the leverage of the key, and the whippen...a two-fer! I am sure there's lot's more on 9/9/01 9:02 PM, Francis Dub=E9 at fdube@vianet.on.ca wrote: By now I should know how to make the touch of an upright lighter (having worked pianas, longer than 10 yrs!) the only way I've lightened the touch was to weaken the damper springs. =20 Can anyone give me practical suggestions? ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/21/d8/1f/de/attachment.htm ---------------------- multipart/alternative attachment--
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