Hello Dennis,
I think I can understand how the H&R device works, However the talk of torque wires throws me somewhat. I assume that the inner tube that carries the "crank", can rotate in the outer tube. What I don't understand is how the inner tube is retained. I am also assuming that the torque wires retain the inner tube somehow and are anchored at the T bar end, or am I misunderstanding something important?
Thanks again,
Andrew.
Yes, the inner tube rotates with the horn, which is soldered to that tube and also to the torque wire (s) that exit the tube. What I don't know is the length of the inner tube. I
suspect the inner tube may only be 3/8" or so, which allows for torque motion inside the outer tube, but please don't quote me on that.
Here's some additional information I can relate:
1) the small tube is crimped slightly around the torque wire
and soldered just outside of the horn. That's what retains the inner tube.
2) there are three loops of torque wire around the button and all the way through the outer tube.
3) The two ends of the torque wire that exit at the T-Bar end are wrapped around the anchor post and also the wrapping continues around the outer tube for approximately 3/16".
4) The anchor post is 1/8" OD music wire, 3/4" long.
5) The overall length of my unit is 3 5/8".
I'm definitely not an artist but this diagram may help clarify things. The inner and outer brass tubes are not shown for clarity.