Hi Folks... I am considering a major action rebuild of a Petrof grand where the indexing of hammer flange holes was botched big time. Looks like the whippen flanges all line up pretty good to where they should be... (I'll have a closer look at everything in the next couple days)... but heres the deal.... Bass hammer shanks project pretty straight (perpendicular to the hammer rail) forward. Tenor section are angled about 10 degrees to the right, upper tenor is more like 15 degrees... extreme angle... and diskant about 10 degrees. In all cases Whips were rather creatively shimmed so that the heel sits fairly square on the capstan and the jack under the knuckle. Hammer alignment to strings leaves the middle of the shank pretty much dead center over the whippen flange in all cases. Its a mess, and the hammers are so worn out the instrument either needs to be re-hammered or trashed. If I'm to re hammer this thing... I want to straighten out this mess at the same time. But I've never approached this kind of thing before and need some guidelines. I am perhaps looking at plugging all hammer flange and whippen flange screw holes and reboring... which leaves me needing the procedure for getting all this in the right spot. Any advice would be appreciated. Cheers RicB
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