> If I change the front to rear bridge pin spacing using my jig/patterns > (I can design them to maintain consistent string offset) and strive to > position the front pins for the same scaling reasons, is this not the > same thing? Another Ron - It is the same thing. This is what I do with my three different spacing jig/punches. In my case, using my 18mm spread as "standard", I find I don't have to go narrower than 16mm, or above 20mm to avoid conflicting pins. > Regarding scaling I use PScale. When I plug in my ideal scale with 53mm > at note 88 the tension is flagged as high (above 66% brake point) for > the top 3 or 4 notes using .032 wire. This piano had no evidence of > broken strings (originals were old and rusted - probably original). It > should be safe to stick with this scheme? Going to a larger wire size > does not appear to help nor do I think it would be a good idea. Sanderson's formula puts a 53mm C-8 at about 70% break. That break% will be essentially the same whatever size wire is used, but the tensions will change with a change in wire size. >When Ron > refers to "smaller radiused hardened bars" he is refering to capo and a > pressure or bearing bar above it? > > Gene Yes. Ron O hardens both the capo and the counter bearing. Ron N
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