Tractor · 1924Unverified
Hart-Parr 12-24
Hart-Parr 12-24 — Standard-tread tractor · 12 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
12 hp
Max power
13.1 kW
Weight
2013 kg
Hover a source tag to verify
Overview
ManufacturerHart-ParrReference
Standard-tread tractorReference
Built in Charles City, Iowa, USAReference
Original price was $1,050 in 1930Reference
Two-wheel driveReference
Manual steeringReference
Open operator station.Reference
Engine
Hart-Parr 5.1L 2-cyl gasolineReference
Hart-Parr 5.5L 2-cyl gasolineReference
Drawbar (claimed)8.9 kWReference
Belt (claimed)17.9 kWReference
Drawbar (tested)13.1 kWReference
Belt (tested)20.1 kWReference
Hart-ParrReference
gasolineReference
2-cylinderReference
liquid-cooledReference
Displacement5.1 LReference
Bore/Stroke140 x 165 mmReference
Rated RPM850Reference
Displacement5.5 LReference
Bore/Stroke146 x 165 mmReference
Belt power (max)20.1 kWReference
Max power13.1 kWReference
Transmission
2-speed gearReference
3-speed gearReference
TypegearReference
Gears2 forward and 1 reverseReference
Gears3 forward and 1 reverseReference
Dimensions
Weight2013 kgReference
Front tire28x5Reference
Rear tire46x10Reference
Ag front28x5 (steel)Reference
Ag rear46x10 (steel)Reference
Length294 cmReference
Width167 cmReference
Height142 cmReference
12-24 Serial Numbers
192436001 (12-24 E)Reference
192536075 (12-24 E)Reference
192636581 (12-24E)Reference
192637101 (12-24 G)Reference
192737190 (12-24 G)Reference
192737901 (12-24 H)Reference
192838119 (12-24 H)Reference
192939687 (12-24 H)Reference
193042279 (12-24 H)Reference
FAQ: How to read a serial number table.Reference
Test results
309 kerosene 2WDOctober 14 - 23, 1924Link: Nebraska Tractor Test 107 fileReference
Drawbar performanceReference
Gear 2 used for power test.Reference
Max pull1385 kgReference
Gear 1 used for pull test.Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.