Ah... Now I see what you were getting at. Haven't run into exactly this, tho at Hamamatsu they DID make a big point of measuring key height in this fashion. On the C2's we had I think it was 63 mm from keybed to underside of the key covering. Dip however was checked with a 10 mm (or so) dip block with the front of the block flush with the front of the top of the key covering. That puts is a couple mm out in front of the key front. I cant imagine running through 88 keys with one of those metal mm measuring sticks checking dip this way tho ! But it DOES remind me of my Japanese student colleagues and their measuring sticks.... and how greatful I was that I'd gone through L. Edwards aftertouch seminars and had such excellent fly by the seat of your pants toutalage from the likes of André and a couple others along the way. Whilst the Japanese kids were using eons of time attempting to measure to the nth degree of accuracy using their various devices of precision... I let my eyeballs, touch, and knowledge of some basic action relationships whip me through the regulation part of our routines.... which ended up yielding as good or better scores then the others in our classes, and had alllll kinds of time left over to work on the voicing and tuning aspects of their training. This was great for me as I got so very much good instruction about voicing issues whilst there because I actually had the time on my hands to work through and get feedback from the instructors. Stock Yamaha hammers for smaller grands are a bit different to work with then some of these wonderful new high quality sets we can get now... but they do serve as a good learning set.... at least under that kind of supervision. Cheers RicB Ok, Since nobody solved the mystery question of where or how does one measure the dip/key travel... At red School house in 1976 we were instructed to measure the total key dip/travel from the under side of the key cover with a metric ruler.. It's a great visual reference point. Later, I discovered for myself that I didn't like 10mm & preferred 10.5 instead When using my gauge the measurement of .390 which again, is measured at slightly in front of the pin will yield a ruler reading result at the front of the key of 10.5mm. But I no longer have to get bi-focal's & headlamps to try to read the little tiny numbers on the ruler. It's a gauge that is a magnifying glass not a microscope but its pretty dang close. Dale
This PTG archive page provided courtesy of Moy Piano Service, LLC