Massey-HarrisModel A
Massey-Harris 81
Row Crop
- power
- Not recorded
- displacement
- 124 ci
- Cylinders
- 4
- Forward gears
- 4
Head to head · Row Crop
Massey-Harris 81 vs Oliver 66 Row-Crop
Image not recorded
OliverModel B
Oliver 66 Row-Crop
Row Crop
- power
- Not recorded
- displacement
- 129 ci
- Cylinders
- 4
- Forward gears
- 6
Massey-HarrisMassey-Harris 81
vs
OliverOliver 66 Row-Crop
How they compare
Headline specs vs. the whole Row Crop
Engine Displacement
▲ 66 Row-Crop higher · +5 ci (+4%)81124 ci
66 Row-Crop129 ci
Median Row Crop Tractor391 ci
81 is in the 2nd percentile; 66 Row-Crop is in the 3rd · 1,409 models
Cylinders
= Effectively tied814
66 Row-Crop4
Median Row Crop Tractor6
81 is in the 17th percentile; 66 Row-Crop is in the 17th · 1,417 models
Forward Gears
▲ 66 Row-Crop higher · +2 (+50%)814
66 Row-Crop6
Median Row Crop Tractor16
81 is in the 4th percentile; 66 Row-Crop is in the 11th · 1,200 models
Operating Weight
▲ 66 Row-Crop higher · +298 lb (+10%)812,895 lb
66 Row-Crop3,193 lb
Median Row Crop Tractor12,307 lb
81 is in the 2nd percentile; 66 Row-Crop is in the 3rd · 1,350 models
81 (A)66 Row-Crop (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Massey-Harris 81 | Oliver 66 Row-Crop | Difference |
|---|---|---|---|
| Manufacturer | Massey-Harris | Oliver | — |
| Model | 81 | 66 Row-Crop | — |
| Category | Row Crop | Row Crop | Same |
Engine
| Spec | Massey-Harris 81 | Oliver 66 Row-Crop | Difference |
|---|---|---|---|
| Manufacturer | Continental | Oliver-Waukesha | — |
| Model | F124 | Not recorded | — |
| Rated RPM | 1,500RPM | 1,600RPM | ▲ 66 Row-Crop+100 RPM · +7% |
| Cylinders | 4 | 4 | Same |
| Displacement | 124ci | 129ci | ▲ 66 Row-Crop+5 ci · +4% |
| Bore | 3in | 3.3in | ▲ 66 Row-Crop+0.3 in · +10% |
| Stroke | 4.4in | 3.8in | ▲ 81+0.6 in · +16% |
Transmission
| Spec | Massey-Harris 81 | Oliver 66 Row-Crop | Difference |
|---|---|---|---|
| Type | Unsynchronized gear | Unsynchronized gear | Same |
Dimensions & Weight
| Spec | Massey-Harris 81 | Oliver 66 Row-Crop | Difference |
|---|---|---|---|
| Length | 119in | 135in | ▲ 66 Row-Crop+16 in · +13% |
| Height | 58in | 85.3in | ▲ 66 Row-Crop+27.3 in · +47% |
| Operating Weight | 2,895lb | 3,193lb | ▲ 66 Row-Crop+298 lb · +10% |
Hydraulics
| Spec | Massey-Harris 81 | Oliver 66 Row-Crop | Difference |
|---|---|---|---|
| Steering Type | Manual | Manual | Same |
Chassis & Drive
| Spec | Massey-Harris 81 | Oliver 66 Row-Crop | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Manual | Manual | Same |
Electrical
| Spec | Massey-Harris 81 | Oliver 66 Row-Crop | Difference |
|---|---|---|---|
| Starter Type | Electric Starter | Not recorded | — |
Capacities
| Spec | Massey-Harris 81 | Oliver 66 Row-Crop | Difference |
|---|---|---|---|
| Coolant | 2.8gal | 3.5gal | ▲ 66 Row-Crop+0.7 gal · +25% |
Operator Station
| Spec | Massey-Harris 81 | Oliver 66 Row-Crop | Difference |
|---|---|---|---|
| Type | Not recorded | Open | — |
Category context
Both models against the field
Engine Displacement
median 391 ciA · 2nd percentile (124 ci)B · 3rd percentile (129 ci)
Cylinders
median 6A · 17th percentile (4)B · 17th percentile (4)
Forward Gears
median 16A · 4th percentile (4)B · 11th percentile (6)
Operating Weight
median 12,307 lbA · 2nd percentile (2,895 lb)B · 3rd percentile (3,193 lb)
Length
median 180 inA · 2nd percentile (119 in)B · 9th percentile (135 in)
A · 81B · 66 Row-CropMedian Row Crop Tractor