Put the main windings in series instead of in parallel for 240. The motor starts in repulsion with induced rotor current flowing through the brushes and commutator. At transition speed. Centrifical force lifts the brushes off the commutator and drops the shorting ring onto the commutator. The motor now runs as an "ordinary" induction motor. The motor start direction is changed by sliding the brush holders. Starting torque is extreme and inrush current modest. Sometimes to prevent twisting parts off or slipping belts. The brush holders are backed off from the max torque position(s) a wee bit. An excellent motor other than the extra moving parts and less energy efficient than the newest motors.
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Today's Featured Article - A Brief History of Tractors in Australia - by Bob Kavanagh. After Captain Cook's exploration of the east coast in 1770 the British Government decided to establish a penal colony in Australia. The first fleet arrived in 1788 and consisted mainly of convicts who were poorly equipped and new little of farming techniques. The colony remained far from self-supporting and it was not until the early 1800's that things started to improve. Free settlers started to arrive, they followed the explorers across the mountains and where land was suitable set up farms. T
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