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Allison V730
From Wikipedia, the free encyclopedia
The Allison V730 transmission is a three-speed automatic transmission used in several makes of transit bus including the RTS, Canadian-produced GM New Looks, and Grumman Flxibles. Later production buses in the GM and Flxible line had the Allison V731 transmission, which is essentially the same unit but controlled electronically, with a keypad replacing the familiar shifter-lever in the driver's compartment.
The Allison V730/V731 family transmissions also come in versions with a built-in retarder (the VR731), and a version allowing transit agencies and others to use right-turning Detroit Diesel family motors (variously the V731R or V731RH) instead of the standard left-turning units found in Flxibles, GM New Looks and RTS equipment.
Most installations of the V730/V731 have them coupled to the DDA 6V92TA two-stroke diesel, but Canadian GM 'New Look' production T6H-5307's had them mated to the then-standard 6V71N. Some Canadian production 1982 "New Look" models featured the 6V92 mated to the V730, such as Vancouver, B.C.'s "Hillclimber" buses currently languishing in storage in the Crane Toilet Warehouse in Burnaby.