The TDMC-33-7002: A 1500 HP Transmission for Shuttle Type Vehicles 750818

The growth in actual size and capability of construction equipment has created a need for new power train designs to handle the tremendous energies which must be absorbed during shift reversals. This paper discusses the TDMC-33-7002, a three-speed, full-reversing shuttle type transmission developed by Twin Disc, Inc., at the request of International Harvester for a transmission system for their 580 Pay Loader. Problems, both expected and unexpected, that arose during the design and development of the transmission-converter system are explored, and new criteria for larger end loaders has been determined.


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