| |
|
This photo shows my latest 120 bps sync rotary gap. The rotor is only 3.25" dia. The motor is a small 1800 rpm motor. The base is 3.75" x 6.25" x 3/8" phenolic. The second photo shows the rotor which is 1/8" phenolic, and uses a special adjustable hub feature which permits the phase to be set by rotating the rotor relative to the hub. This gap was designed for a portable coil, so once I find the correct phase position, I'll tighten the four screws and leave the phase set that way. The spinning electrodes are 1.25" x 1/4 - 28 bolts. The third photo shows the copper ring attached behind the rotor, which connects all four spinning electrodes. The fixed electrodes are 5/16" dia copper bars, and the two support posts are 3/4" dia aluminum. Four spacers lift the motor slightly above the base to provide clearance for the rotor. The motor came with a larger run capacitor, but I replaced it with a much smaller lower value capacitor which saves a lot of space and works well. I installed this rotary onto my TT-42 TC as a test, and it performed well and gave the normal 42" sparks.
|
|
