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Distinguishing it from the GM 14-bolt 9.5-inch ring gear rear differential is the latter's utilization of C-clips to retain axles, differing from the free-floating axle mechanism of its heavy-duty counterpart.
Enhanced front (7.25" ring gear) and rear (8.5" ring gear) axles w/ 3.73:1 rear-axle ratio; Larger wheel and axle bearings; 31 x 10.50" BFG A/T Tires (Pickup), 31 x 10.50" BFG Longtrails (Blazer) 46mm gas pressurized Bilstein Monotube shocks; Rear track bar (Pickup), Rear anti-sway bar (Blazer) Skid plates; Fender flares
For its 15th Anniversary Edition, the '83 H/O came only in black with silver rocker panels. Chrome 15" wheels fitted Goodyear Eagle GT tires, and a power bulge hood and rear spoiler gave the car a purposeful look. A modified version of Oldsmobile's 307 CID V8 was installed, along with 3.73 gears and Hurst's radical Lightning Rods shifter.
Geared, torque-sensitive mechanical limited-slip differentials use worm gears and spur gears to distribute and differentiate input power between two drive wheels or front and back axles. This is a completely separate design from the most common beveled spider gear designs seen in most automotive applications.
† - The actual 5th gear ratio is 1.02:1 (same as 4th gear), but it runs through a different final drive gear from gears 1-4 and reverse, with a ratio of 2.73:1, thus giving it an effective gear ratio of 0.74:1, if one assumes that it has the same final drive ratio as the rest of the gears.
There was the Fiero Coupe, the Sport Coupe and the SE. The Fiero Coupe, also called "Fuel Economy Leader", came with the MY-8 4-speed manual transaxle that had a 0.73 overdrive top gear along with a high mpg 3.32:1 axle ratio. This gave it an EPA highway/city rating of 50/31 mpg. Air conditioning and automatic transaxle could not be ordered.
Each gear had a fixed radius of turning, ranging from 5 m (16 ft) for 1st gear up to 80 m (260 ft) for 7th gear. The driver was expected to judge the sharpness of a turn ahead of time and shift into the appropriate gear to turn the tank. The driver could also engage the brakes on one side to force a sharper turn. [52]
A gear train or gear set is a machine element of a mechanical system formed by mounting two or more gears on a frame such that the teeth of the gears engage.. Gear teeth are designed to ensure the pitch circles of engaging gears roll on each other without slipping, providing a smooth transmission of rotation from one gear to the next. [2]
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