Sources and field evidence
Catalog Archive: Baseline specifications compiled from historical manufacturer archives and equipment registries. Laboratory test report verification in progress.
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Engineering & Capability Benchmark
Specific output, tractive ratio, and segment percentile
Engine and power specifications
- Engine model
- Rumley
- Fuel type
- Kerosene
- Rated horsepower
- 38 hp
- Rated PTO Power
- N/A (Advance-Rumely specification)
- Drawbar Power @ Rated Engine Speed
- 20 hp (Nebraska OECD Test 2218)
- Cylinders
- 2
- Displacement
- 9.9 L (601.4 ci)
- Bore / stroke
- 6.8125x8.25 inches 173 x 210 mm
- Rated RPM
- 640 RPM
- Crankcase oil capacity
- N/A
- Coolant capacity
- 52 qts (~49.2 L)
Maintenance picks for the OilPull M 20/35
Filters, oil and common wear parts for this model.
Transmission and chassis specifications
- Transmission type
- Gear (3F/1R)
- Gears (forward / reverse)
- 3 forward / 1 reverse
- Drive system
- 2WD
- Wheelbase
- N/A
- Front tire
- 34x7
- Rear tire
- 52x16
- Hydraulic flow
- N/A
- Rear hitch
- N/A
Implement Draft & Ballast Matcher
Simulate draft resistance, drawbar power transfer, and optimal axle weight distribution for Advance-Rumely OilPull M 20/35.
Engine demand (83.4 HP) exceeds rated power (38 HP). Reduce working speed by 1.0-1.5 mph or reduce working width.
Tractor exceeds target ballast by 2177 kg. Consider removing wheel weights to reduce soil compaction.
Catalog archival serial-number ranges
| Production year | Starting serial # | Ending serial # | Assembly plant |
|---|---|---|---|
| 1924 | #1 | #1 | Factory not specified |
| 1925 | #2 | #1,013 | Factory not specified |
| 1926 | #1,014 | #3,084 | Factory not specified |
| 1927 | #3,085 | End of run | Factory not specified |
Instant Used Market Valuation Projector
Algorithmic resale estimate for Advance-Rumely OilPull M 20/35 (1924)
Direct Segment Rivals & Showdowns
Head-to-head match-ups calibrated by horsepower and era
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Advance-Rumely
USA • 16 Models
Advance-Rumely was a pioneering American agricultural machinery manufacturer that played a significant role in the development of mechanized farming in the early 20th century. The company was formed in 1911 through the merger of two established firms: the Advance Thresher Company and the Rumely Company. The Rumely Company, founded in 1853 in La Porte, Indiana, initially gained prominence for its threshing machines and later expanded into steam engines. The merger brought together the expertise of both companies, leading to the development of the iconic OilPull tractor in 1910. This innovative machine featured an oil-cooled engine, which was a significant technological advancement at the time, providing improved cooling efficiency and reliability for farmers. Advance-Rumely's tractors were known for their durability and performance, making them popular among American farmers during the early 20th century. However, the company faced challenges in the late 1920s as it attempted to enter the market for smaller tractors with models like the DoAll and the 6A, which struggled to gain traction. In 1931, Advance-Rumely was acquired by Allis-Chalmers, a major player in the agricultural machinery industry. This acquisition marked the end of Advance-Rumely as an independent brand, as Allis-Chalmers discontinued production of Advance-Rumely models and integrated the company's technology and expertise into its own product lines.
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