David Brown 50D VS John Deere 40 specs comparison
                                         
                                        
                                    
                                
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        David Brown 50D
General Infos| Make | David Brown | 
| Model | 50D | 
| Country | United states | 
| Production | From 1953 Until 1958 | 
| Price | - | 
| Tractor type | - | 
| Fuel | diesel | 
| Service repair manual | David Brown 50D Manual | 
Dimensions, sizes and tires
| AG front tires | 7.50-18 | 
| AG rear tires | 14-30 | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 6,130 lbs or 2780 kg | 
| Length | 134.75 inches [342 cm] | 
| Width | 74 inches [187 cm] | 
| Height | - | 
| Wheelbase | 81.75 inches [207 cm] | 
| Ground clearance | 13 inches [33 cm] | 
| Turning radius | - | 
| Rear tread size | - | 
| Front tread size | - | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 248 ci or 4.1 L | 
| Cylinders | 6 cylinders | 
| Engine power | 50 hp or 37.3 kW | 
| Engine RPM | 1800 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 14.5 gal or 54.9 L | 
| Oil capacity | 11 qts or 10.4 L | 
| Oil change | - | 
| Starter motor | - | 
| Starter volts | - | 
| Parts And Accessories | David Brown 50D Parts | 
| Batteries number | - | 
| Batteries voltage | - | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | - | 
| Charging system | - | 
| Charging Volts | - | 
| Charging Amps | - | 
| Trans system | - | 
| Trans type | gear | 
| Trans gears | 6 forward and 2 reverse | 
| Clutch system | 10-inch dry disc | 
| Wheel drive | 4x2 2WD | 
| Final drive | - | 
| Steering | manual | 
| Braking system | mechanical drum | 
| 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 | - | 
| Drawbar horsepower | - | 
| Fuel consumption | - | 
| Pulling power | - | 
| Claimed power | - | 
| Real power | - | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | - | 
| Rear PTO RPM | 540 (rpm) | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | - | 
| Hitch system | - | 
| Rear hitch | - | 
| Rear hitch lift | - | 
| Front hitch | - | 
| Front hitch lift | - | 
                                        
                                    
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        John Deere 40
General Infos| Make | John Deere | 
| Model | 40 | 
| Country | United states | 
| Production | From 1953 Until 1955 | 
| Price | 1,500 USD | 
| Tractor type | Utility tractor | 
| Fuel | gasoline | 
| Service repair manual | John Deere 40 Manual | 
Dimensions, sizes and tires
| AG front tires | 5.00-15 | 
| AG rear tires | 9-24 (40S) | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 2,900 lbs or 1315 kg | 
| Length | 130.625 inches [331 cm] | 
| Width | 89.75 inches [227 cm] | 
| Height | 58.75 inches [149 cm] | 
| Wheelbase | - | 
| Ground clearance | - | 
| Turning radius | - | 
| Rear tread size | 47.25 to 96 inches | 
| Front tread size | 39.125 to 54 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 100.5 ci or 1.6 L | 
| Cylinders | 2 cylinders 4 valves | 
| Engine power | - | 
| Engine RPM | 1850 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | gasoline | 
| Fuel injection | - | 
| Fuel tank size | 10.5 gal or 39.7 L | 
| Oil capacity | 5 qts or 4.7 L | 
| Oil change | - | 
| Starter motor | - | 
| Starter volts | 6 V | 
| Parts And Accessories | John Deere 40 Parts | 
| Batteries number | 1 | 
| Batteries voltage | 6 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | positive | 
| Charging system | - | 
| Charging Volts | - | 
| Charging Amps | - | 
| Trans system | - | 
| Trans type | gear | 
| Trans gears | 4 forward and 1 reverse | 
| Clutch system | dry disc | 
| Wheel drive | 4x2 2WD | 
| Final drive | - | 
| Steering | manual | 
| Braking system | - | 
| 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 | 16.77 hp or 12.5 kW | 
| Drawbar horsepower | 18.12 hp or 13.5 kW | 
| Fuel consumption | - | 
| Pulling power | 2,511 lbs or 1138 kg | 
| Claimed power | - | 
| Real power | - | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | transmission | 
| Rear PTO RPM | 540 (rpm) | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | - | 
| Hitch system | - | 
| Rear hitch | I | 
| Rear hitch lift | - | 
| Front hitch | - | 
| Front hitch lift | - | 
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Useful links and guides ....
- David Brown provided us with the latest version of its 50D service repair manual
 - Find All mechanical and electrical parts and accessories of David Brown 50D farm-tractor here
 
- Get your John Deere 40 manual book version
 - Cabine, electrical And mechanical parts for John Deere 40 farm-tractor here