Multi-model comparison
Side-by-side tractor comparison
Compare technical specifications, horsepower ratings, hydraulic capacities, and dimensions across all tractor models.
Head-to-Head Arena Spotlight
Direct technical match-up between flagship models
50 HP
VS
+10.0%
55 HP
Quick Takeaways:⚡ Rated Power: Hart-Parr 28-50 (+5.0 HP / +10.0%)🛢️ Displacement: Hart-Parr 28-50 (+0.6 L)
Model overview
3 selected
Engine and power
Rated horsepower
50 HP
55 HP
830 HP+775.0 HP
PTO horsepower
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335 HP★ Leader
Engine displacement
10.5 L
11.1 L
18 L+6.9 L
Cylinders
4 cylinders
4 cylinders
6 cylinders
Fuel type
Kerosene
Gasoline
Diesel
Transmission and drive
Drive system
2WD
2WD
Tracks (4-Track)
Transmission type
Gear (2F/1R)
Gear (2F/1R)
Full power shift (21F/11R)
Forward / reverse gears
2 fwd / 1 rev
2 fwd / 1 rev
21 fwd / 11 rev
Weight and capacities
Operating weight
4,565 kg
3,900 kg
33,566 kg+29,001 kg
Hydraulic total flow
—
—
—
ASABE Field Implement Capacity Matchup
Max Subsoiler (12" depth)
1 Shanks
1 Shanks
21 Shanks+20 Shanks
Max Disk Harrow (8 mph)
6 ft (2 m)
6 ft (2 m)
54 ft (16 m)+48 ft
Max Air Seeder (5.5 mph)
15 ft (5 m)
15 ft (5 m)
106 ft (32 m)+91 ft
Target Ballast & Balance
Heavy-draft standard (30/70 for 2WD, 40/60 for MFWD, 55/45 for 4WD)
7,250 lbs
30% Front / 70% Rear
7,975 lbs
30% Front / 70% Rear
84,000 lbs(OEM Cap)
50% Front / 50% Rear
Est. Fuel Burn (75% Load)
1.8 gal/h (6.8 L/h)
2 gal/h (7.6 L/h)
29.9 gal/h (113.2 L/h)
Provenance and serial decoders
Production years
1924–1927
1927–1930
2025
Assembly factory
Racine, Wisconsin, USA
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