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The John Deere Model B tractor was a two-plow row-crop tractor produced by John Deere from 1935 to 1952, with direct successors produced until 1960. The B was a scaled-down, less expensive version of the John Deere Model A. It was followed by the updated 50, 520 and 530 models.
In clutch-brake differential steering, power is disconnected to one side or the other with a clutch, and the unpowered side may also have a brake applied to tighten the turn. [1] Note that there is no differential gearset in this design. The tracks on either side of the vehicle will always turn at the same speed unless one is declutched for ...
A cross-drive steering transmission is a transmission, used in tracked vehicles to allow precise and energy-efficient steering. It consists of the following main parts: two identical single-stage planetary gearings, a differential, a hydraulic pump connected to the engine (similar to an oil pump of cars), a hydraulic motor powered by the ...
The T-34 was one of the most successful tanks designed specifically to use the clutch steering system. The simplest single-engine steering system in mechanical terms, and almost universally used on early tank designs, was the combination of a brake and a clutch connected to steering controls.
John Deere Model 60 (1955) John Deere Model 530 (1959) John Deere Model 430S (circa 1960) After years of testing, Deere & Company released its first proper diesel engined tractor in 1949, the Model R. The R was also the first John Deere tractor with a live independent power take-off (PTO) equipped with its own clutch. The R also incorporated ...
The problems associated with unequal-length driveshafts are endemic to the transverse engine layout combined with an end-mounted transmission unit; some manufacturers have mitigated this completely by mounting the engine longitudinally but still driving the front wheels—this indeed was the solution adopted on the earliest front-wheel-drive ...
One-way bearing combining sprags and bearing rollers in one race Sprags jam when driven and slide when in reverse. A sprag clutch is a one-way freewheel clutch.It resembles a roller bearing but, instead of cylindrical rollers, non-revolving asymmetric figure-eight shaped sprags, or other elements allowing single direction rotation, are used.
A direct-shift gearbox (DSG, German: Direktschaltgetriebe [1]) [2] [3] is an electronically controlled, dual-clutch, [2] multiple-shaft, automatic gearbox, in either a transaxle or traditional transmission layout (depending on engine/drive configuration), with automated clutch operation, and with fully-automatic [2] or semi-manual gear selection.