Do you mean you really propose for concerts pianos mounted on those trucks ? or is it only for shows ? And nobody complaining about the flex of the assembly before ? You got me .... wondering what goes on there, really. Understand better why nobody pay attention to the casters. Grounding the piano is well sayng it nowadays. Best and we count on you . Isaac OLEG -----Message d'origine----- De : Nichols [mailto:nicho@zianet.com] Envoye : mercredi 1 septembre 2004 21:55 A : Pianotech Objet : Re: Hall projection (was Re: Big Hammers) At 06:38 AM 9/1/2004 -0500, you wrote: >At 9:24 PM -0600 8/30/04, Nichols wrote: >>... Also, is the piano "grounded"? Big halls laugh at pianos on flexing, >>rubber-wheeled springs. A couple of blocks for under the front work wonders. > >I couldn't help but notice this idea, Guy. > >Just where under the front are these blocks placed? > >Keith Slip the blocks under the steel ..... arm?.foot?... flange? thinghy that supports the leg. Right where the castor would be. That's where the flex is, when you push down on the keys. A 2X4 like you would use for stage truck installation is fine, painted black. I've experimented with smaller blocks, made of pinblock material, and covered in player cloth. They work also, but the taper has to be very close with a smaller block. With a slightly larger block, it's easier to lift a hair and kick the block under. The main thing is to have blocks that the stage crew won't loose every performance. If the block is only supporting the nut, or bolt head that protrudes from the bottom, it will soon develop a divot. Not bad, but it can quickly reach a point where it appears to be supporting but may not be. So.... support the flange itself, not the nut/bolt. Make sense? Try it, you'll like it, guaranteed. Later, Guy
This PTG archive page provided courtesy of Moy Piano Service, LLC