Schmid doesn't need marketing. That's solid physics for you and I can prove it. Now a mechanical linkage or string produces torque on the valve. Torque is the following equation:
T = F * r * sin (theta) Where: T = Torque F = Force D = Radius of where torque is being applied to theta = angle between force and the angle of radial line Now with a force of say 1 Newtons (heavy fingers) and a radius of about .01m you do NOT apply uniform torque on the valve with miniballs and here is why. When an open valve is depressed initially it is at 135 degrees to the center. This is in turn 45 degrees from the radial line. What would that Torque be? It would be (1)*(.01)*sin(45) = .0071 Newton-meters. At the midpoint the line would be an even 90 degrees yielding (1)*(.01)*sin(90) = .01 Newton-meters At the end we would have an angle theta of 135 degrees (1)*(.01)*sin(135) = .0071 Newton-meters Now with strings what is the torque? Well the string always applies toque at 90 degrees so it would always be: (1)*(.01)*sin(90) = .01 Newton-meters. I rest my case. With strings you always have uniform torque and always the maximum torque allowable. With mini-balls you always have variable torque and it'll never be but once per stroke at it's maximum torque. You could throw spring strength or viscosity of oil but that will not effect the amount of torque needed to push the valve or the fact that mini-balls are uneven torque. Why would Schmid need to market this? He would stand to make money no matter what you used, strings or mini-balls. Additionally he could make them however you wanted. What a silly comment... marketing indeed. I've tried mini-balls before, and they're such a pain to reassemble and take apart. Like I said, I can restring a horn in a very short amount of time. Once you cut the proper length of string, tie the end, melt the other end (which is a total of two minutes tops) re-stringing is a walk in the park. I can do 4 valves in about one-two minutes flat. Can you do that with mini-balls? -William In a message dated 12/6/2003 1:55:09 PM Pacific Standard Time, [EMAIL PROTECTED] writes: > Yeah, I've read it. The memory of it makes me smile everytime I wiggle > my wonderfully fast, light, direct mini-ball operated titanium valves. > > You have to hand it to Englebert; not only does he make good horns, > he's also a top marketeer. > > Stick to your strings brother ;o) > > All the best, > Tom _______________________________________________ post: [EMAIL PROTECTED] set your options at http://music.memphis.edu/mailman/options/horn/archive%40jab.org
