[pianotech] Lyre Damage/wheel orientation

Ron Nossaman rnossaman at cox.net
Fri Nov 27 12:52:31 MST 2009


Jim Busby wrote:
> Ron,
> 
> Hey, are you experimenting on my D?? <G>

Well -er- yea.


> While you're at it, I'd be interested in what Don Mannino
> says about wheel (caster) orientation. While the wheels
> (The larger brass wheels) point out, how much do they
> change the keybed vs. pointing in? Don says it changes
> regulation, and I think it does, especially on some pianos.
> But how much? From what you found with the lyre (only .02"
> difference!) I wonder if caster orientation may be a factor
> not considered in previous posts. IOW, if this DOES make a
> big difference and was not taken into consideration maybe
> all previous measurements (not yours) were bogus, or
> suspect. Ya think?

Hmmm... I didn't pay any attention at all to the caster 
orientation. It might be worth the time to set up that dial 
gage after all, and see what happens - at least on *one* 
piano. I'll get back.

Ron N


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