[CAUT] about magnets? / Germany Bans Lead??

[Avery Todd]

Mike,

He was here recently, also. For Abbey Simon. I don't "think" he's on the list
but here's his e-mail address if you want to write him about this.

Tom Kaplan <tkpt@mac.com>

Avery

At 03:40 AM 3/23/2005, you wrote:
>     Tom Kaplan of Yamaha visited and did a great job on our CF, and told 
> me Germany is banning lead for safety and environmental 
> reasons!!!.   That means pianos like Steinways will have to find an 
> alternative soon!!  Are you out there Tom to give us more details??
>-Mike
>
> > ----------
> > From:         caut-bounces@ptg.org on behalf of Ed Sutton
> > Reply To:     ed440@mindspring.com;College and University Technicians
> > Sent:         Tuesday, March 22, 2005 5:41 PM
> > To:   caut@ptg.org
> > Subject:      [CAUT] about magnets
> >
> > O, Great Minds of Caut!
> >
> > I have heard tell that Petrof is producing grand pianos with a magnetic 
> assisted action, soon to arrive in our neighborhood.
> >
> > The magnets are installed in the wippen rail and wippen in repelling 
> orientation so that the magnets lift the wippen similar to a wippen 
> assist spring.  The touchweight can be refined by adjusting the magnets 
> similar to a screw regulated wipen assist spring.  Functionally it seems 
> identical to a wippen assist spring.
> >
> > When I asked how it differed from a wippen assist spring I was told 
> "Springs wear out, but magnets last forever."  I would be interested in 
> educated comments on that statement.  The magnets will be held 
> continuously in opposition and "compression."  Will they grow weaker over 
> years? decades? or will they last forever?
> >
> > How does this compare with assist springs?  Do wippen assist springs 
> grow weaker over time?  Faster than magnets?
> >
> > Jim Ellis, I thank you in advance!
> >
> > Sincerely,
> > Ed Sutton
> >
> >
> >
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