Tyco Jam car Chassis

 

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     Tyco JAM Car Chassis. The chassis had a very slight revision during 1978-1993. Tyco added a faster motor that required some additional cooling. A hole was drilled under the newer style motor to reduce heat.

     The later Models were called 'High speed Obstacle Cars' they were much faster then the original 1978-1982 Jam cars because of the faster CC-03 cars that came out in 1990-1993.

 

DSCN0727.JPG      The Chassis used a Full wave bridge rectifier that converted AC 3 phase power into DC to power the motor forward. Six Standard 1 amp Switching diodes were used on the PCB board to filter DC power to the motor for forward only travel.
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     The Jam Car used three contact shoes to pull power from the track rails. It would steal half the power in the track system from both 'A' and 'B' rails. When a single player was using the TCR set it was very hard to keep a passing car moving when the Jam car was on the track. The Jam car would steal half the power to the passing car and so if the Jam Car de-railed or suddenly increased load it would cause the passing car to stall or fly off the track. It was the source of frustration. When using two passing cars with two players the JAM Car would steal one quarter the power from each passing car until one passing car de-railed causing it to steal half the power again. Tyco should of built a forth rail for the Jam car to use exclusively.

     An additional problem caused by the three phase power converter located on the front of the JAM Car chassis was voltage feedback and voltage leakage, this would send incorrect power signals to the passing cars making steering slightly glitched when Jam Cars were used at the same time. At the end of the TCR product life Tyco removed Jam cars from the play sets and told buyers they were an option.

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