Isn't there an alternative to lead? I realize steel doesn't wear as much and rusts...;-[ A compromise with some weight and some spring seems the best.... David I. ----- Original message ---------------------------------------- From: Ric Brekne <ricbrek@broadpark.no> To: pianotech <pianotech@ptg.org> Received: Thu, 28 Apr 2005 14:50:58 +0100 Subject: Whippen support springs >Hi Jack. >Like em or not, me thinks we are going to see a whale of a lot more of >them at least in Europe. Thats because in a couple years now lead in >keys will be forbidden by law. Alternatives are magnetic schemes like >my own open source design, or some of the patented ones that some few >factories have. >One of the backdraws is there proximity to where a voicing block is to >be inserted. Not usually the easiest of things to do if one wants to >avoid changing the tension on the springs whilst still using a voicing >block. There are some touch concerns that are argued back and forth. As >usual, there is much opinion and less hard facts on the subject, but I >think its fair to say the use of springs provides a different touch then >use of leaded keys. >A leadless key is certainly possible however. More then likely one >would opt for fairly light hammers in the case. But its a doable within >acceptable touch parameters. I personally prefer a more mass based >system... but thats just me. >Cheers >RicB >Jack writes >I would like to know some things about wippen support springs. Who uses >them? Do companies still continue to use them? Should they be removed? >I know they make key weighting difficult.=20 >Jack Houweling >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
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