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Best Sixty Specs ( 1919-1925 )

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Production

Description Agricultural Crawler tractor / Built in San Leandro, CA
Manufacturer Best

Engine

Engine type Best 18.5L 4-cyl gasoline
Bore/Stroke 6.50x8.50 inches (165 x 216 mm)
Description Best / gasoline / 4-cylinder / liquid-cooled
Displacement 1128.2 ci (18.5 L)
Rated RPM 650
Belt (tested) 73 hp (54.4 kW)
Drawbar (tested) 56 hp (41.8 kW)
Plows 9 (14-inch)

Transmission

Gears 2 forward and 1 reverse / 3 forward and 1 reverse
Type gear / gear
Transmission type 2-speed gear / 3-speed gear
Transmission type 2-speed gear / 3-speed gear

Mechanical

Cab Open operator station.
Drive crawler

Dimensions & Tires

Height 76.5 inches (194 cm)
Length 140 inches (355 cm)
Weight 17500 lbs (7938 kg)
Width 90 inches (228 cm)

Belt Pulley

Diameter 16 inches (40 cm)
RPM 650
Speed 2720 ft/min (829.06 meters/min)
Width 12 inches (30 cm)

Dimensions & Tracks

Description Tracks
Weight 17500 lbs (7938 kg)

Nebraska Tractor Test 105

Belt power (max) 73 hp (54.4 kW)
Description Gasoline 3-speed crawlerSeptember 15 - 29, 1924Link: Nebraska Tractor Test 105 file / Drawbar performance
Max pull 12360 lbs (5606 kg)

Nebraska Tractor Test 76

Belt power (max) 56 hp (41.8 kW)
Description Gasoline 2-speed crawlerMay 6 - 24, 1921Link: Nebraska Tractor Test 76 file / Drawbar performance
Max power 50 hp (37.3 kW)
Max pull 11,000 lbs (4989 kg)

Nebraska Tractor Test 98

Belt power (max) 66 hp (49.2 kW)
Description Gasoline 3-speed crawlerSeptember 10 - 14, 1923Link: Nebraska Tractor Test 98 file / Drawbar performance
Max power 56 hp (41.8 kW)
Max pull 11295 lbs (5123 kg)

Tractor Tests

Description NTTL 76: gasoline 2-speed crawler / NTTL 98: gasoline 3-speed crawler / NTTL 105: gasoline 3-speed crawler