What does a 2-speed rear end mean?
Introduction. General Information. The Dana Spicer 2-speed axle allows the vehicle operator to select “Low Range” (Button Down) for good starting torque and pulling power. By select- ing “High Range” (Button Up), the axle is shifted to a gear ratio which allows greater road speed and economy.
How does a 2-speed rear end work?
The 2-speed axle works on the same basic principles, but with an added planetary gear set inside the ring gear. This works by sliding a clutch gear meshing with the high range clutch plate. When the low range is selected, the sliding clutch gear engages with the low range clutch plate.
What is a 2-speed diff?
The dual-ratio differential is exactly what its name suggests: the rear differential provides two different gear ratios: a shorter one for maximum tractive force for faster acceleration or steep grade-climbing capability, and a taller one for quiet, fast highway cruising (the Columbia two-speed axle was said to be able …
What is a Columbia 2-speed rear end?
The Columbia two-speed offered a low gear ratio for low-speed pulling power and fast acceleration from a dead stop. It could then be shifted into a higher ratio on the fly to give the vehicle a smoother and more efficient ride for highway speeds.
How do I tell what rear end I have?
Measure the diameter of the ring gear. This measurement equals the size of your rear end. Count how many bolts are on the inspection cover. If you have 10 bolts, then your Ford has a 7.5-inch or an 8.8-inch rear end. If you have 12 bolts, then the rear end is a 9 inches.
What is a two speed differential?
A two-speed differential adapted for use in motor vehicle driveline applications. The two-speed differential is capable of selectively transferring power to either a first drive mechanism for establishing a first drive speed ratio or a second drive mechanism for establishing a second drive speed ratio.
What is a 2 speed axle?
The 2-speed axle works on the same basic principles, but with an added planetary gear set inside the ring gear. In high range, the planetary gears don’t do anything and the differential works totally normal. This works by sliding a clutch gear meshing with the high range clutch plate.