Allis Chalmers D21 Series I VS David Brown 3800 Selectamatic specs comparison
Allis Chalmers D21 Series I
General Infos| Make | Allis Chalmers |
| Model | D21 Series I |
| Country | United states |
| Production | From 1963 Until 1969 |
| Price | - |
| Tractor type | Row Crop tractor |
| Fuel | diesel |
| Service repair manual | Allis Chalmers D21 Series I Manual |
Dimensions, sizes and tires
| AG front tires | 11.00x16 |
| AG rear tires | 24.5x32 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 9500 lbs or 4309 kg |
| Length | 160.6 inches [407 cm] |
| Width | 91.6 inches [232 cm] |
| Height | - |
| Wheelbase | 96.1 inches [244 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | - |
| Front tread size | - |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 426 ci or 7.0 L |
| Cylinders | 6 cylinders |
| Engine power | - |
| Engine RPM | 2200 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 52 gal or 196.8 L |
| Oil capacity | 12 qts or 11.4 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | - |
| Parts And Accessories | Allis Chalmers D21 Series I Parts |
| Batteries number | 2 |
| Batteries voltage | 12 V |
| Battries Amps | 95 amps |
| Cold Amps | - |
| Ground force | negative |
| Charging system | Delco-Remy generator |
| Charging Volts | - |
| Charging Amps | 32 amps |
| Trans system | Power Director |
| Trans type | sliding gear |
| Trans gears | 8 forward and 2 reverse |
| Clutch system | dry disc |
| Wheel drive | 4x2 2WD |
| Final drive | - |
| Steering | power |
| Braking system | band actuated disc |
| Cabin type | Open operator station |
| Differentiel lock | - |
| System | - |
| Valves | - |
| Pump flow | - |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | - |
| Hydraulic pressure | - |
| Max flow | - |
| Drawbar type | - |
| Claimed power | 93 hp or 69.4 kW |
| Drawbar horsepower | 93.09 hp or 69.4 kW |
| Fuel consumption | 7.1 gal/hour or 26.9 l/hour |
| Pulling power | 14,840 lbs or 6731 kg |
| Claimed power | 103 hp or 76.8 kW |
| Real power | 103.06 hp or 76.9 kW |
| Engine @RPM | - |
| PTO Clutch | - |
| Rear PTO | independent |
| Rear PTO RPM | 1000 (rpm) |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | 7.1 gal/hour or 26.9 l/hour |
| Hitch system | - |
| Rear hitch | III/II |
| Rear hitch lift | - |
| Front hitch | - |
| Front hitch lift | - |
David Brown 3800 Selectamatic
General Infos| Make | David Brown |
| Model | 3800 Selectamatic |
| Country | United states |
| Production | From 1968 Until 1971 |
| Price | 4,000 USD |
| Tractor type | Utility tractor |
| Fuel | gasoline |
| Service repair manual | David Brown 3800 Selectamatic Manual |
Dimensions, sizes and tires
| AG front tires | 14.9/13-24 |
| AG rear tires | 13.6/12-28 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 3885 lbs or 1762 kg |
| Length | 115.625 inches [293 cm] |
| Width | 64.5 inches [163 cm] (min) |
| Height | - |
| Wheelbase | 76 inches [193 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | 48 to 76 inches |
| Front tread size | 48 to 72 inches |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 146.1 ci or 2.4 L |
| Cylinders | 3 cylinders |
| Engine power | - |
| Engine RPM | 2200 (rpm) |
| Torque | 115 lb-ft or 155.9 Nm | Torque RPM | 1400 (rpm) |
| Fuel type | gasoline |
| Fuel injection | - |
| Fuel tank size | 9.5 gal or 36.0 L |
| Oil capacity | 6.75 qts or 6.4 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | David Brown 3800 Selectamatic Parts |
| Batteries number | 1 |
| Batteries voltage | 12 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | - |
| Charging system | - |
| Charging Volts | - |
| Charging Amps | - |
| Trans system | - |
| Trans type | gear |
| Trans gears | 12 forward and 4 reverse |
| Clutch system | dry disc |
| Wheel drive | 4x2 2WD |
| Final drive | spur gear |
| Steering | manual |
| Braking system | mechanical shoe |
| Cabin type | Open operating station |
| Differentiel lock | rear diff lock standard |
| System | Selectamatic |
| Valves | - |
| Pump flow | 7.3 gpm or 27.6 lpm |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | 6 gal or 22.7 L |
| Hydraulic pressure | 2000 psi or 137.9 bar |
| Max flow | - |
| Drawbar type | - |
| Claimed power | - |
| Drawbar horsepower | 32.13 hp or 24.0 kW |
| Fuel consumption | 3.4 gal/hour or 12.9 l/hour |
| Pulling power | 4419 lbs or 2004 kg |
| Claimed power | 39 hp or 29.1 kW |
| Real power | 37.24 hp or 27.8 kW |
| Engine @RPM | - |
| PTO Clutch | - |
| Rear PTO | live |
| Rear PTO RPM | 540 (rpm) |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | 3.3 gal/hour or 12.5 l/hour |
| Hitch system | position and draft control |
| Rear hitch | I |
| Rear hitch lift | 1600 lbs or 725 kg |
| Front hitch | - |
| Front hitch lift | - |
Related tractor comparison
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Choose another tractor
Useful links and guides ....
- Allis Chalmers provided us with the latest version of its D21 Series I service repair manual
- Find All mechanical and electrical parts and accessories of Allis Chalmers D21 Series I farm-tractor here
- Get your David Brown 3800 Selectamatic manual book version
- Cabine, electrical And mechanical parts for David Brown 3800 Selectamatic farm-tractor here
