Pianotech

I am hanging new hammer assemblies on a 1987 Yamaha C5. After carefully measuring the string height and hammer center heights, calculating the bore, everything looks like it should work out fine. But - the hammer shanks are buried in the rest cushions at typical hammer blow. The original hammers were bored shorter and so the shanks were resting comfortably above the cushions (well, would have been if the action had been regulated recently). I believe that Yamaha spec is for zero degree rake. So why can't I get this to work out? It won't regulate properly if can't get the shanks off the cushions. Has anyone else encountered this problem? 

I am hanging new hammer assemblies on a 1987 Yamaha C5. After carefully measuring the string height and hammer center heights, calculating the bore, everything looks like it should work out fine. But - the hammer shanks are buried in the rest cushions at typical hammer blow. The original hammers were bored shorter and so the shanks were resting comfortably above the cushions (well, would have been if the action had been regulated recently). I believe that Yamaha spec is for zero degree rake. So why can't I get this to work out? It won't regulate properly if can't get the shanks off the cushions. Has anyone else encountered this problem? 

I am hanging new hammer assemblies on a 1987 Yamaha C5. After carefully measuring the string height and hammer center heights, calculating the bore, everything looks like it should work out fine. But - the hammer shanks are buried in the rest cushions at typical hammer blow. The original hammers were bored shorter and so the shanks were resting comfortably above the cushions (well, would have been if the action had been regulated recently). I believe that Yamaha spec is for zero degree rake. So why can't I get this to work out? It won't regulate properly if can't get the shanks off the cushions. Has anyone else encountered this problem? 

Dumb question:  Why did you not simply order new parts from Yamaha? (Repeat...dumb question 🤔) 

Peter Grey Piano Doctor 

I am hanging new hammer assemblies on a 1987 Yamaha C5. After carefully measuring the string height and hammer center heights, calculating the bore, everything looks like it should work out fine. But - the hammer shanks are buried in the rest cushions at typical hammer blow. The original hammers were bored shorter and so the shanks were resting comfortably above the cushions (well, would have been if the action had been regulated recently). I believe that Yamaha spec is for zero degree rake. So why can't I get this to work out? It won't regulate properly if can't get the shanks off the cushions. Has anyone else encountered this problem? 

Dumb question:  Why did you not simply order new parts from Yamaha? (Repeat...dumb question 🤔) 

Peter Grey Piano Doctor 

I am hanging new hammer assemblies on a 1987 Yamaha C5. After carefully measuring the string height and hammer center heights, calculating the bore, everything looks like it should work out fine. But - the hammer shanks are buried in the rest cushions at typical hammer blow. The original hammers were bored shorter and so the shanks were resting comfortably above the cushions (well, would have been if the action had been regulated recently). I believe that Yamaha spec is for zero degree rake. So why can't I get this to work out? It won't regulate properly if can't get the shanks off the cushions. Has anyone else encountered this problem?