Minneapolis-Moline RTN tractor specifications

1939 - 1951

1939 - 1951 R SeriesRow-Crop tractor

Production

Production Manufacturer:Minneapolis-Moline
Type:Row-Crop tractor
Factory:Minneapolis, Minnesota, USA
Total built:906
The Minneapolis-Moline RTN was the single-front wheel version of the R series.

Variants

Variants RTU:tricycle-front
RTS:standard-front
RTN:single-front
RTE:adjustable-front
RTI:industrial tractor

1939 - 1954

R Series

Row-Crop tractor

Production

Production
Manufacturer:	Minneapolis-Moline
Type:	Row-Crop tractor
Factory:	Minneapolis, Minnesota, USA
Total built:	25,824
Original price:	$1700 (1954)
The Minneapolis-Moline RTU was the universal row-crop version of the R series tractors. It was also the most popular version. The R series were available with the Comfort Cab featuring upholstered seat, roll-down windows, and rear door.

Variants

Variants
RTU:	tricycle-front
RTS:	standard-front
RTN:	single-front
RTE:	adjustable-front
RTI:	industrial tractor

Minneapolis-Moline RTU Power

Minneapolis-Moline RTU Power
Drawbar (claimed):	20 hp 14.9 kW
	24 hp 17.9 kW (late)
Belt (claimed):	23 hp 17.2 kW
Plows:	2
Drawbar (tested):	23.9 hp 17.8 kW
Belt (tested):	27.09 hp 20.2 kW
power test details ...

Minneapolis-Moline RTU Engine

Minneapolis-Moline RTU Engine
Minneapolis-Moline 2.7L 4-cyl gasoline
Fuel tank:	14 gal 53.0 L
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Steering:	manual
Brakes:	disc
Cab:	Open operator station.
Transmission:	4-speed unsynchronized gear
Transmission details ...

Power Take-off (PTO)

Power Take-off (PTO)
Rear RPM:	560

Dimensions & Tires

Dimensions & Tires
Wheelbase:	76 inches 193 cm
Weight:	3,100 lbs 1406 kg
Front tire:	4.00-15
Rear tire:	8-36
Full dimensions and tires ...

RTU Serial Numbers

RTU Serial Numbers
Location:	Left side of tractor frame, near brake pedals.
photo of RTU serial number
1939:	400001
1940:	402201
1941:	405576
1942:	407951
1943:	408826
1944:	409358
1945:	410748
1946:	413755
1947:	416545
1948:	0014800001
1949:	0014900001
1950:	0015000001
1951:	00102156
1952:	00103973
1954:	00104824
how to read serial numbers...

Links

Links
R production data:

Belt Pulley

Belt Pulley
Diameter:	12.25 inches 31 cm
Width:	6 inches 15 cm
RPM:	933

Electrical

Electrical
Charging system:	generator
Battery volts:	6

Minneapolis-Moline RTN Power

Minneapolis-Moline RTN Power Drawbar (claimed):20 hp
14.9 kW
Belt (claimed):23 hp
17.2 kW
Plows:2
Drawbar (tested):23.9 hp
17.8 kW
Belt (tested):27.09 hp
20.2 kW
power test details ...

1939 - 1951

R Series

Row-Crop tractor

Nebraska Tractor Test 341

Nebraska Tractor Test 341
Gasoline 4-speed 2WD April 29 - May 10, 1940 Link: Nebraska Tractor Test 341 file
Belt power (max):	23.22 hp 17.3 kW
Belt fuel use (max):	2.4 gal/hour 9.1 l/hour
Drawbar performance
Max power:	20.01 hp 14.9 kW
Gear 3 used for power test.
Max pull:	2,666 lbs 1209 kg
Gear 1 used for pull test.

Nebraska Tractor Test 468

Nebraska Tractor Test 468
Gasoline 4-speed 2WD October 20 - November 1, 1951 Link: Nebraska Tractor Test 468 file
Belt power (max):	27.09 hp 20.2 kW
Belt fuel use (max):	2.9 gal/hour 11.0 l/hour
Drawbar performance
Max power:	23.9 hp 17.8 kW
Gear 3 used for power test.
Max pull:	2,801 lbs 1270 kg
Gear 1 used for pull test.

Minneapolis-Moline RTN Engine

Minneapolis-Moline RTN Engine Minneapolis-Moline 2.7L 4-cyl gasoline Fuel tank:14 gal
53.0 L
Engine details ...

1939 - 1951

R Series

Row-Crop tractor

Engine Detail

Engine Detail
Minneapolis-Moline
gasoline
4-cylinder
liquid-cooled
Displacement:	165 ci 2.7 L
Bore/Stroke:	3.625x4.00 inches 92 x 102 mm
Rated RPM:	1500
Firing order:	1-3-4-2
Starter volts:	6
Oil capacity:	7 qts 6.6 L
Coolant capacity:	13.5 qts 12.8 L
Sparkplug gap:	0.025 inches 0.635 mm
Point gap:	0.020 inches 0.508 mm
Intake valve clearance:	0.025 inches 0.635 mm hot
Exhaust valve clearance:	0.014 inches 0.356 mm hot

Mechanical

Mechanical Chassis:4x2 2WD
Steering:manual
Cab:Open operator station.
Transmission:4-speed unsynchronized gear
Transmission details ...

1939 - 1951

R Series

Row-Crop tractor

Transmission

Transmission
Type:	unsynchronized gear
Gears:	4 forward and 1 reverse
Clutch:	dry disc

Speeds

Speeds
With 10-34 rear tires.

Power Take-off (PTO)

Power Take-off (PTO) Rear RPM:560

Dimensions & Tires

Dimensions & Tires Wheelbase:76.325 inches
193 cm
Weight:3,100 lbs
1406 kg
Full dimensions and tires ...

1939 - 1951

R Series

Row-Crop tractor

Minneapolis-Moline RTN Tires

Dimensions

Dimensions
Wheelbase:	76.325 inches 193 cm
Length:	115.75 inches 294 cm
Width:	81.1 inches 205 cm
Height:	69.5 inches 176 cm
Weight:	3,100 lbs 1406 kg
Front tread:	0 inches 0 cm
Rear tread:	54 to 88 inches 137 to 223 cm

RTN Serial Numbers

RTN Serial Numbers 1939:400001
1940:402201
1941:405576
1942:407851
1943:408826
1944:409358
1945:410748
1946:413755
1947:416545
1948:0034800001
1949:0034900001
1950:0035000001
1951:00300094

how to read serial numbers...