4 material differences · fewer than 12
Tractor oneALLIS-CHALMERS RUMELY-DoAll1928–1931No measured PTO figureTractor twoJ.I. Case 8-181916–1918No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1928–1931; 1916–1918). The figures below are side by side so you can judge them yourself; each says whether it was measured, claimed or declared by its source.
Field by field
4 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | RUMELY-DoAll | 8-18 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 16.2 hp | 18.0 hp | +11% 8-18 |
| Transmission | |||
| Top speed declared | 3.7 mph · 6.0 km/h | 3.5 mph · 5.63 km/h | +7% RUMELY-DoAll |
| Clutch declared | Hand-operated double disc clutch for switching between forward and reverse gear | Hand-lever operated expanding shoe clutch | differs |
| Hydraulics & hitch | |||
| Rear PTO speeds declared | 538 | — | — |
| Weight & dimensions | |||
| Unladen weight declared | 3,702 lb · 1,679 kg | 3,770 lb · 1,710 kg | — |
| Wheelbase declared | 60.4 in · 1,535 mm | 72.0 in · 1,829 mm | +19% 8-18 |
| Length declared | 108.0 in · 2,743 mm | 123.0 in · 3,124 mm | +14% 8-18 |
| Width declared | 60.0 in · 1,524 mm | 58.0 in · 1,473 mm | — |
| Fuel tank declared | 72.1 qt · 68.2 L | — | — |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
ALLIS-CHALMERS RUMELY-DoAll sources
- Source: Traktorenlexikon, “Allis-Chalmers Modell DoAll”
J.I. Case 8-18 sources
- Source: Traktorenlexikon, “Case 9-18”