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The writing was on the wall for slot car racing

This was a natural progression but one that would have long standing consequences. Small companies would rewind the armatures, epoxy it all in place and even balance it. More current means more heat. Where before everyone could relate, now fewer and fewer were interested. The component of the armature that accepts the electricity into the armature is called the commutator. The research done during 1968-1969 was lost and forgotten about by the mid 70's. The endbell of the motor that holds the motor brushes that contact the commutator was also plastic. Motors used high temperature endbells and thick steel motor cans for more reliable magnetic fields. As these armatures utilized lower gauges of wire, the term "hotter" was coined. From the factory, these motors were not competitive. The motor of choice until this time was the Mabuchi 16D, a motor popular for its balance of low weight and power.The slot car viewed from above, still appeared as a recognizable race car. Yes, plastic melts, so soon the need for a better commutator became necessary. The easiest way, was to have some of its windings removed to decrease it's resistance which was called de-winding. This speed and handing came at a cost. That needed a better replacement also. Slot car racing had officially abandoned scale appearance in favor of speed. The fad had ended and this hobby would never reach this level of popularity again. The best modification, was to remove all the windings, and replace them with thicker gauge wire with less turns. Even today, motors being produced costing over $300 are technologically inferior from a science perspective, to the 1969 motors. Companies like Mura and Champion of Chamblee made these, as well as armatures designed by real engineers and scientists to reduce heat and increase performance. The price of a slot car had escalated, reducing the number of kids who could participate. Unrealistic spoilers started to appear. From a drivers standpoint, these cars were really fast and stayed in the slot very well, even for the average participant. This was called rewinding and it became a cottage industry of it's own. The wheels were much too small, and the profile much too low. The loss of detail resulted in a lower appeal for the new prospect seeing slot cars for the first time. It was from the side that it was not at all realistic. Mabuchi made theirs out of plastic with 3 copper plates. To make a competitive motor the internal armature would have to be altered.The writing was on the wall for slot car racing.The year was 1967. Hot arms draw more current through them.Can you see where slot car three phase induction motors racing is going next?With speed becoming the appetite of the slot car racer, manufacturers in America set up shop full time to produce high quality components that could withstand the high power requirements.
by rollertablemotors | 2018-11-20 12:15 | industrial fan motor

Three Phase Induction Motors,Asynchronous Motors


by rollertablemotors