Downbearing gauge

[Mike McCoy]

I think I found what I need.... a very informative article from Tom Lowell in the Jan 1986 Journal on CD... amazing the info out there!

Mike

----- Original Message ----- 
From: "Mike McCoy" <mjmccoy@usa.com>
To: "Pianotech" <pianotech@ptg.org>
Sent: Friday, July 11, 2003 7:06 PM
Subject: Re: Downbearing gauge


> Ron, Joe and those who have made downbearing gauges,
> 
> Rookie downbearing questions...
> 
> What would you consider an ideal design using a dial indicator? Pics??
> How long a spread from end pin to end pin? 
> Dial at one of the ends or in the middle?
> How much bearing should I shoot for? Depends on the season also I'm sure.
> How much bearing is too little? 1/32 or less? 
> Too much?? This would cause difficulty tuning or possibly bridge cant I would guess?
> 
> Mike
> 
> Mike McCoy RPT
> Chapters 170 & 190 PTG
> Langhorne, Pa
> mailto:mjmccoy@usa.com
> 
> 
> 
> ----- Original Message ----- 
> From: "Ron Nossaman" <RNossaman@cox.net>
> To: <davidlovepianos@earthlink.net>; "Pianotech" <pianotech@ptg.org>
> Sent: Friday, July 11, 2003 6:17 PM
> Subject: Re: Downbearing gauge
> 
> 
> > 
> > > > Not possible, since the degrees figured from this sort of gage depends on
> > > > the pin row spacing on the bridge...
> > >
> > >That makes sense, of course.  Didn't think about the effect of varied
> > >spacing.
> > 
> > There is one thing. The three legged gage type with a solid pin at one end, 
> > one in the middle, and the dial at the other end can get pretty close to 
> > giving you meaningful measurements with the two legs on the speaking or 
> > rear duplex and the dial plunger on the bridge segment. Wrapped strings are 
> > a problem with these though.
> > 
> > Bubble is better.
> > 
> > Ron N
> > 
> > _______________________________________________
> > pianotech list info: https://www.moypiano.com/resources/#archives
> > 
> 
> _______________________________________________
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