Measuring tire test with weight and wheel counter. This was a wheel counter arrangement made for a special test on a 4-wheel drive experimental vehicle. It was impossible to attach the usual wheel revolution counters and so an arrangement (shown) was made to use a small weight to keep the counter in positiom. Another special arrangement was needed for the drawbar dynamometer connections as well
Three-quarter view of Harris Power Horse during drawbar test. Only the drawbar test was performed be...
"A Massey-Harris-Ferguson TO-35 being tested on the dirt track in 1955." Side view of Massey-Harris-...
Test no. 405. 1948. Pete Burns (Oliver rep), Wm. Watson (Oliver Rep), and G.W. Olson (technician). S...
Quite often the tractors were tested on the drawbar with different sets of tires at the request of t...
An experimental tractor on an unofficial test in 1990. This 4-wheel drive vehicle had chain drives t...
John Deere L drawbar test with the oldest NTTL test car and a load generating trailer. The two-wheel...
Measuring wheel slippage. The tractor drive wheel has a wheel counter mounted on its axle. The count...
John Deere ready for Drawbar test. The New Caterpilar-made Test car and tractor are parked inside th...
1941 Oliver Row Crop 60 HC during test 375. Carlton Zink (in hat) on far left. The other two men are...
Three-quarter view of John Deere 140 Garden tractor. The tractor is on top of a "rolling road" desig...
Three-quarter view of a Choremaster garden tractor ready for the drawbar test. The tractor test car ...
Three-quarter view of Oliver 1800 mechanical-front-wheel-drive (MFWD) tractor from test 832 during t...
Checking recommended air pressure in the tires before start of test.The Massey-Harris tractor is tow...
Minneapolis-Moline G1355 tractor from test 1141 on the test track. Note the extra large platform bel...
A side view of a Ford 4630 (16x8). This was a Front Wheel Assist (FWA) type tractor, meaning that th...
Three-quarter view of Harris Power Horse during drawbar test. Only the drawbar test was performed be...
"A Massey-Harris-Ferguson TO-35 being tested on the dirt track in 1955." Side view of Massey-Harris-...
Test no. 405. 1948. Pete Burns (Oliver rep), Wm. Watson (Oliver Rep), and G.W. Olson (technician). S...
Quite often the tractors were tested on the drawbar with different sets of tires at the request of t...
An experimental tractor on an unofficial test in 1990. This 4-wheel drive vehicle had chain drives t...
John Deere L drawbar test with the oldest NTTL test car and a load generating trailer. The two-wheel...
Measuring wheel slippage. The tractor drive wheel has a wheel counter mounted on its axle. The count...
John Deere ready for Drawbar test. The New Caterpilar-made Test car and tractor are parked inside th...
1941 Oliver Row Crop 60 HC during test 375. Carlton Zink (in hat) on far left. The other two men are...
Three-quarter view of John Deere 140 Garden tractor. The tractor is on top of a "rolling road" desig...
Three-quarter view of a Choremaster garden tractor ready for the drawbar test. The tractor test car ...
Three-quarter view of Oliver 1800 mechanical-front-wheel-drive (MFWD) tractor from test 832 during t...
Checking recommended air pressure in the tires before start of test.The Massey-Harris tractor is tow...
Minneapolis-Moline G1355 tractor from test 1141 on the test track. Note the extra large platform bel...
A side view of a Ford 4630 (16x8). This was a Front Wheel Assist (FWA) type tractor, meaning that th...
Three-quarter view of Harris Power Horse during drawbar test. Only the drawbar test was performed be...
"A Massey-Harris-Ferguson TO-35 being tested on the dirt track in 1955." Side view of Massey-Harris-...
Test no. 405. 1948. Pete Burns (Oliver rep), Wm. Watson (Oliver Rep), and G.W. Olson (technician). S...