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  • All fields: Tractors--Testing
(188 results)



Display: 20

    • Larsen Tractor Museum, Records

    • Tractors--Testing; Allis-Chalmers Manufacturing Company; Allis-Chalmers tractors; Crawler tractors
    • "Harold Mizner, a test technician, measuring drive belt pulley speed. It might be Carlton Zink at the dynamometer." On the left of the image, the rear half of an Allis-Chalmers HD-14 Diesel crawler is visible. The belt extends from the tractor...
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing
    • Deawbar test of Allis Chalmers "U". They use truck as load unit. No information available on the truck. Side view of the tractortowing the second test car and the load truck. This test was performed at Hoffmann Estates in Illinois
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing; Case Corporation; Case tractors
    • From the photograph it is not clear which Case model this is, but it is one of a series tested track prepping runs used at that time to prepare the track surface for the Drawbar test.
    • Larsen Tractor Museum, Records

    • Crawler tractors; Caterpillar Inc.; Tractors--Testing
    • "Caterpillar crawler tractor during drawbar test." The crawler tractor is driven on the old dirt test track with the first "bathtub" test car and load tractors pulled behind it. This was conducted at Hoffman Estates in Illinois.
    • Larsen Tractor Museum, Records

    • Tractors; Tractors--Testing
    • "Re-fueling during a test. A Volumetric fuel measuring apparatus is installed on a tractor with dual tires." Rear view of the tractor with three technicians gathered around it making adjustments. One of the men stands on the far side of the...
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing
    • Title: "An early tractor test with a truck used as a load unit." An unidentifieds tractor on a dirt track towing the test car and a specially modified truck. Unfortunately there is no record of this type of load truck. Its towing resistance was...
    • Larsen Tractor Museum, Records

    • Tractors; John Deere tractors; Deere & Company; Tractors--Testing
    • A John Deere Tractor being prepared for firld tests. This one was apparently conducted at Hoffman Farms (Schaumburg, Ill), April, 1939. The horizontal bar in front is for attaching the wheel revolution counters. Also shown on the right is the load...
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing; Tractors--Testing; John Deere tractors; Deere & Company
    • Drawbar Test of John Deere L, Test#313, 1938. Tractor test on the dirt track. Th test car is the number 2 generation with the resistance trailer at the back. Apparently the Adams test car had a problem at the time.
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing
    • Drawbar Test of Minneapolis Moline 12-25, Test # 13, 1920. The test car shown is the first one (the bathtub with a roof!) used. The interesting thing is the "fifth-wheel steer" system which must have made for difficult steering with the wide axle.
    • Larsen Tractor Museum, Records

    • Farm tractors; Tractors--Testing
    • Drawbar test of the Silver King Tri-Cycle tractor. Test #250, 1936. This was the year before the Adams Test Car was put into use. The test car is using a trailer with an axle which was driven by a separate engine via a transmission. Throttling...
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing
    • John Deere L drawbar test with the oldest NTTL test car and a load generating trailer. The two-wheeled load vehicle used a hydraulic pump and a valriable restriction to generate resistance on the trailer wheels. The resistance generated heat and...
    • Larsen Tractor Museum, Records

    • Equipment; Tractors--Testing
    • "Second test car and large, truck-type" loading unit. (The drive for the electric DC-Generator came from a PTO drive on the truck's transmission. The gearbox on the truckbed allows the DC Generator system to operate at the required speed under...
    • Larsen Tractor Museum, Records

    • Farm tractors--Testing; Tractors--Testing; Crawler tractors
    • "Early test of an unidentified large crawler tractor." Bird's-eye view of crawler tractor towing the first ("bathtub") test car and other tractors on a dirt track. The tractor with the stack looks like a Hart-Parr or a Rumely.
    • Larsen Tractor Museum, Records

    • Tractors; Crawler tractors; Tractors--Testing
    • Text on photograph:"Sometimes it rains in Nebraska. Crawler tractor being tested after rain." A large pool of water fills the foreground and on the opposite side of the pool, the tractor is on the dirt test track towing the test car and load...
    • Larsen Tractor Museum, Records

    • Crawler tractors; Tractors--Testing
    • Large crawler tractor (TD 24?) being testd on the dirt test track towing the Adams test car and five other tractors. The buildine on the left is the Agricultural Engineering building (L.W. Chase Hall today) and on the right is the Campus...
    • Larsen Tractor Museum, Records

    • Tractors--Testing
    • "Dynamometer during a test. Carlton Zink, Chief Engineer from 1930 till 1942, is running the test. The dynamometer's generator is at front left and the load control board is on the right. Carlton is adjusting the load rheostat.

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