Hi Barrie, Wouldn't you have to use an agraffe with a built in bearing bar to have any chance at all? (I've got a half dozen of these, but I don't know what they came out of.) Otherwise, with modern wire sizes and scale tensions, I wouldn't think you would have anywhere near enough bearing angle to keep the string in contact with a single agraffe during play. Two staggered agraffes, for side bearing, would need a bridge wide enough to carry them and it would probably split apart from the holes or mounting hardware unless... TA-DA you used horizontally laminated bridges. I knew I could get that in there somehow. I'm wondering if a narrower treble bridge is that big a deal in the first place. Plenty of existing bridges are tapered toward the bottom in the treble already to narrow the footprint on the board (and get it back away from the edhe of the board, I presume). Do you suppose the benefits of a narrower bridge are positive enough to balance the already mentioned potential problems? Tell me more. Ron At 10:24 PM 12/9/97 +0000, you wrote: >why not use agraf on the sound board bridge, so you could use a narrower >bridge, ERARD did a lot of work on this, an so did Broadwood, I have >worked on a Broadwood with a type of agraf, however the bridge was just >as thick as a conventional bridge. > >At the moment I am working my way though ERARDs patents for my next >project some fascinating drawings on bridges. > >Barrie, > >In article <199712091931.NAA16669@onyx.southwind.net>, Ron Nossaman ><nossaman@SOUTHWIND.NET> writes >>Hi Newton, >> >>It would split twice as fast? If it were taller than it was wide, would it >>"break off" with a major pitch raise? How about "flagpoling bridge syndrome"? >> >>The splitting part brings me to something I wanted to ask anyway. Is there a >>reasonable body of empirical evidence that horizontally laminated bridges >>are evil, or is it just that since they are found on evil pianos, it's >>assumed? Have horizontally laminated bridges been actually installed in >>decent pianos and tested? >> >>Ever a "lert" and in anticipation, Ron >> >> >> >>At 12:21 PM 12/9/97 -0500, you wrote: >>>Why ARE bridges so wide? What, if anything, would happen if a bridge >>>were half its current width? >>> >>> Newton >>> >>> >>> >> Ron Nossaman >> >> > > > > > >-- > >Barrie Heaton | Be Environmentally Friendly >URL: http://www.airtime.co.uk/forte/piano.htm | To Your Neighbour >The UK PIano Page | >pgp key on request | HAVE YOUR PIANO TUNED > Ron Nossaman
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