Image not recorded
CO-OPModel A
CO-OP 1
Row Crop
- power
- Not recorded
- displacement
- 133 ci
- Cylinders
- 4
- Forward gears
- Not recorded
Head to head · Row Crop
Row Crop

Row Crop
How they compare
1 is in the 3rd percentile; 81 is in the 2nd · 1,409 models
1 is in the 17th percentile; 81 is in the 17th · 1,417 models
1 is in the 3rd percentile; 81 is in the 2nd · 1,350 models
1 is in the 4th percentile; 81 is in the 2nd · 1,157 models
Full comparison
| Spec | CO-OP 1 | Massey-Harris 81 | Difference |
|---|---|---|---|
| Manufacturer | CO-OP | Massey-Harris | — |
| Model | 1 | 81 | — |
| Category | Row Crop | Row Crop | Same |
| Spec | CO-OP 1 | Massey-Harris 81 | Difference |
|---|---|---|---|
| Manufacturer | Waukesha | Continental | — |
| Model | Not recorded | F124 | — |
| Rated RPM | Not recorded | 1,500RPM | — |
| Cylinders | 4 | 4 | Same |
| Displacement | 133ci | 124ci | ▲ 1+9 ci · +7% |
| Bore | 3.3in | 3in | ▲ 1+0.3 in · +10% |
| Stroke | 4in | 4.4in | ▲ 81+0.4 in · +10% |
| Spec | CO-OP 1 | Massey-Harris 81 | Difference |
|---|---|---|---|
| Type | Gear | Unsynchronized gear | — |
| Spec | CO-OP 1 | Massey-Harris 81 | Difference |
|---|---|---|---|
| Length | 124in | 119in | ▲ 1+5 in · +4% |
| Width | 74.8in | Not recorded | — |
| Height | 55in | 58in | ▲ 81+3 in · +5% |
| Operating Weight | 3,300lb | 2,895lb | ▲ 1+405 lb · +14% |
| Spec | CO-OP 1 | Massey-Harris 81 | Difference |
|---|---|---|---|
| Steering Type | Manual | Manual | Same |
| Spec | CO-OP 1 | Massey-Harris 81 | Difference |
|---|---|---|---|
| Front Tire Size | 7.5-16 | Not recorded | — |
| Rear Tire Size | 28-Oct | Not recorded | — |
| Spec | CO-OP 1 | Massey-Harris 81 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Manual | Manual | Same |
| Spec | CO-OP 1 | Massey-Harris 81 | Difference |
|---|---|---|---|
| Starter Type | Not recorded | Electric Starter | — |
| Spec | CO-OP 1 | Massey-Harris 81 | Difference |
|---|---|---|---|
| Coolant | Not recorded | 2.8gal | — |
Category context