>I still dont buy into the idea that 10 grams or more of lead switched out >with equivalent in assist spring strength is going to result in the same ><<feel>>. >Cheers >RicB Ric Ric Ric, Unles someone took over my point and changed it, you missed it. I don't buy it either. Fenton ----- Original Message ----- From: "Richard Brekne" <ricb at pianostemmer.no> To: <pianotech at ptg.org> Sent: Monday, October 06, 2008 4:11 PM Subject: What's all this I hear about Inertia ? > Of course you (and David) are correct here. Late at nite, looking <<too > casually>> at a simple formula while forgetting its use in practice are my > only excuse. My apologies for not being more careful. > > But now that we are clear of this, which also gets me past the bit where > compensating for lead with assist springs leaves the SW ratio the same.... > (the last being the stumble which got me into this mess) I still dont buy > into the idea that 10 grams or more of lead switched out with equivalent > in assist spring strength is going to result in the same <<feel>>. > > Cheers > RicB > > > Grin... if you change the amount of FW, then you change the Ratio > and you no longer have "an action with the same hammers, ratio, and BW, > but different leading" You have an action with both different > leading and different ratio. > > > > If all that one changes is FW, then the only thing that changes is BW. SWR > stays the same as does Action Ratio and regulation. > -- > > Regards, > > Jon Page > > >
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