Hi Jim... others Just did what I think is the correct way of figuring the change in the angle of the downwards force vector from the string to the bridge. Since you said it took about 3 mm to get 0 bearing, I figured it as the string being a straight line if you raised the backlength 3 mm. So if you had 84 mm back length, 1068 mm speaking length, then before raising the backlength 3 mm you have about 177.95 degrees between the two lengths. Raising the back length then so that the string is straight angles the downwards force vector backwards then about 1 degree if I have it right. That would be splitting the 177.95 in two and subtracting the difference from the 180 degrees angle thats created when you raise the back length 3mm. Grin... I havent got a clue as to whether a 1 degree change in the direction force is applied to the bridge makes a heap of difference tho... proabbbly not to much considering at the same time you are lessening the amount of downward force to next to nothing. If someone sees an error in the way I did this... I'd like to get straightened out. Fun and games :) Cheers RicB
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