Advance-Rumely OilPull K 12/20

The Advance-Rumely OilPull K 12/20 is a tractor produced by Rumely. It is equipped with a 452.4 ci 7.4 L engine. The listed engine power is Kerosene (listed): 40 hp / 29.8 kW. Transmission: 2 forward and 1 reverse. Operating weight: 6,430 lbs 2916 kg.

Engine Power

Kerosene (listed): 40 hp / 29.8 kW

Fuel & Capacities

23 gal 87.1 L

Transmission

2 forward and 1 reverse

Operating Weight

6,430 lbs 2916 kg

Overview

	1918 - 1924 Standard-tread tractor

Production
Manufacturer	Advance-Rumely
Standard-tread tractor
Built in La Porte, Indiana, USA
Total built	7,284

Advance-Rumely OilPull K 12/20 Engine
Rumley 7.4L 2-cyl kerosene
Fuel tank	23 gal 87.1 L
Aux. fuel	1 gal 3.8 L
Engine details ...

Advance-Rumely OilPull K 12/20 Transmission
2-speed gear
Transmission details ...

Advance-Rumely OilPull K 12/20 Power
Engine	40 hp 29.8 kW
Drawbar (claimed)	12 hp 8.9 kW
Belt (claimed)	20 hp 14.9 kW
Drawbar (tested)	15.02 hp 11.2 kW
Belt (tested)	25.87 hp 19.3 kW
Performance test details ...

Mechanical
Two-wheel drive
Open operator station.

Dimensions & Tires
Weight	6,430 lbs 2916 kg
Front tire	44x8
Rear tire	64x20
Full dimensions and tires ...

Engine

Engine Detail — 452.4 ci / 7.4 L Kerosene

Manufacturer	Rumley
Fuel Type	Kerosene
Configuration	2-cylinder, liquid-cooled horizontal opposed
Displacement	452.4 ci 7.4 L
Bore/Stroke	6.00x8.00 inches 152 x 203 mm
Power	40 hp 29.8 kW
Rated RPM	560

Transmission

Transmission — 2 forward and 1 reverse gear

Type	gear
Gears	2 forward and 1 reverse

Dimensions

Advance-Rumely OilPull K 12/20 Tires
Ag front	44x8 steel
Ag rear	64x20 steel

Dimensions
Length	132 inches 335 cm
Width	64 inches 162 cm
Height	75 inches 190 cm
Weight	6,430 lbs 2916 kg

Tests

Nebraska Tractor Test 10
Kerosene 2-speed 2WD May 1 - 21, 1920 Link: Nebraska Tractor Test 10 file
Belt power (max)	25.87 hp 19.3 kW
Belt fuel use (max)	3.0 gal/hour 11.4 l/hour
Drawbar performance
Max power	15.02 hp 11.2 kW
Max pull	2780 lbs 1261 kg

Recommended Implements & Sizing Guide

Engineering recommendations for Rumely Advance-Rumely OilPull K 12/20 based on its 40 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm)	Medium Duty	Standard utility farm tillage.
Rotary Cutter / MowerMowing & Clearing	6 ft (72 in)1.8 m	Medium Duty	Medium pasture clearing; rear slip-clutch recommended.
Rotary TillerSeedbed Prep	66 to 72 in165 - 180 cm	Medium Duty	Standard utility tiller; slip clutch protection required.
Disc HarrowSecondary Tillage	7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙	Medium Duty	Field leveling and clod breaking behind plows.
Hay BalerHay & Forage	Small Square Baler (14x18")小方捆打捆机 (36x46 cm)	Medium Duty	Classic 2-string baler for horse and small livestock hay.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Rumely Advance-Rumely OilPull K 12/20.

Estimated Continuous Field Runtime: 11.1 hrs

Approximately 11.1 hours of continuous field operation at ~75% rated power on a full tank (23 gal / 87.1 L).

Estimated 75% Load Fuel Burn~2.1 gal/hr (7.9 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours

Rumely Advance-Rumely OilPull K 12/20 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Rumely Advance-Rumely OilPull K 12/20.

Enter value:

Unit:

Converted Equivalents:

Horsepower (HP)40 hp

Kilowatts (kW)29.8 kW

Metric Horsepower (PS / CV)40.6 PS

Direct Competitor Comparison

Compare Advance-Rumely OilPull K 12/20 against same-era industry alternatives in the same horsepower class.

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