I was thinking if I had the original specs or drawings it would help. Maybe Shaff can find them for me. >From my measurements, the hammer flange center pin is about an 1/8" to 3/16" high for a bore distance of 2 1/16" in the tenor and treble sections. That's kind of a short bore distance as you're almost drilling through the felt on the bigger tenor hammers. So I could cut about 3/16" off the front foot of the action bracket to bring the hammer rail down to same height at each bracket. The capstans have plenty of room to move down. I guess the whippen rail has risen about 1/3 as much as the hammer rail. So my second guess would be to cut about an 1/8" off the rear foot so as not to rotate the bracket and shim the wippen rail up and to the front until I have an action spread in the 113 mm range and the Magic Lines or lines of convergence are as close to the optimum as can be. The action spread now is 116.7mm in the treble and 116 in the bass. It doesn't look like these brackets are expanding at the same rate. Just the one treble bracket is showing a crack along the base. So now that I've moved the whippen rail to the front 2 to 3mm, I have to cut the back off the bracket or notch the keyframe and move the stack back in order to center the wippens over the capstans. The key ratio is 2.08 so the capstans are in the right place, I think. Then I hope and pray the strike line is back to where it should be and the brackets aren't jammed into the damper trap work. The hammers are hung at 5 3/16" or 132mm, center line to center pin. Renner has exact replacement whippens and shanks. The wippen number is 913 051. The shank/flange # 913 007. I hope someone is following this. If you know this action geometry, is my scenario correct? The action seemed to have a spongy feel after I moved the whippen rail to the front. Is this because I compromised the wippen lever ratio by not moving the stack? Really I'm hoping some one will have some in a drawer in their shop. Please. Keith Roberts kpiano@goldrush.com Associate PTG > Make pattern, cast out of epoxy/epoxy composite? > ("Liquid Steel")? > Thump >
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