> Hi Del > I have too much evidence to the contrary. The end of the > knot becomes a theoretical termination point, and the helix is almost > incapable of flexing. The helix doesn't have to flex with a vertical hitch. The loop pivots on the hitch. That's the point. A German loop clamped on a vertical hitch is more restrictive than an English loop that can pivot. > So many pianos have about a 55mm knot at A0, and only about 7-10mm of > flexible string. James had a clear demonstration model at the Cal state > convention. The reaction of all that saw it was wow! The vibration time > of the new knot vs an English loop is about 3 times greater. And this is with a vertical hitch? >To the > previous writer, it is not Del's hitch pins. But was developed and > patented by Harold Conklin of the Baldwin piano company. And to all writers and readers, it isn't Roger Jolly's loop. It's called a German loop, and was invented by someone unknown to me, many years prior to the invention of Roger Jolly. > Whilst Conklin's design was a big step forward. I feel the knot also > adds some thing. The feed back on my prototype 6'4'' Knabe at NAMM > received very positive results. Side by side comparisons of the three > models re scaled, has been a very obvious improvement.. > > Regards Roger This needs to be put in context. There are times when the German loop will be a definite improvement, and other times when it won't. It depends on back scale length, core wire size changes with re-scaling, and hitch type. Ron N > >> The German loop is unnecessary with vertical hitches. Of the two, vertical >> hitches are acoustically superior but they are different. Most piano >> manufacturers are frightened out of their teeth when they encounter >> anything >> different. >> >> Del
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