David Brown 3800 Selectamatic VS John Deere 8650 specs comparison

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

Electrical and battery specs

Batteries number	1
Batteries voltage	12 V
Battries Amps	-
Cold Amps	-
Ground force	-
Charging system	-
Charging Volts	-
Charging Amps	-

Clutch and gearbox specs

Trans system	-
Trans type	gear
Trans gears	12 forward and 4 reverse
Clutch system	dry disc

Cabine and mechanical specs

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

Hydraulics specifications

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 specifications

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

Power take-off (PTO) specs

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

3 point hitch specifiations

Hitch system	position and draft control
Rear hitch	I
Rear hitch lift	1600 lbs or 725 kg
Front hitch	-
Front hitch lift	-

John Deere 8650

General Infos

Make	John Deere
Model	8650
Country	United states
Production	From 1982  Until 1988
Price	95,000  USD
Tractor type	Four wheel Drive (4WD) tractor
Fuel	diesel
Service repair manual	John Deere 8650 Manual

Dimensions, sizes and tires

AG front tires	20.8-34
AG rear tires	20.8-34
Lawn front tires	-
Lawn rear tires	-
Indus front tires	-
Indus rear tires	-
Weight	29,320 lbs or 13299 kg
Length	223.5 inches [567 cm]
Width	-
Height	-
Wheelbase	125 inches [317 cm]
Ground clearance	-
Turning radius	17.8 feet [5.4 m]
Rear tread size	66 to 129 inches
Front tread size	66 to 129 inches
Turning radius	-

Horsepower and engin specs

Engine capacity	619 ci or 10.1 L
Cylinders	6 cylinders
Engine power	290 hp or 216.3 kW
Engine RPM	2100 (rpm)
Torque	-
Torque RPM	-
Fuel type	diesel
Fuel injection	-
Fuel tank size	214 gal or 810.0 L
Oil capacity	28 qts or 26.5 L
Oil change	-
Starter motor	-
Starter volts	12 V
Parts And Accessories	John Deere 8650 Parts

Electrical and battery specs

Batteries number	2
Batteries voltage	6 V
Battries Amps	-
Cold Amps	975
Ground force	negative
Charging system	alternator
Charging Volts	-
Charging Amps	110 amps

Clutch and gearbox specs

Trans system	Quad-Range
Trans type	partial power shift
Trans gears	16 forward and 6 reverse
Clutch system	Perma-Clutch hydraulic wet discs

Cabine and mechanical specs

Wheel drive	4x4 articulated 4WD
Final drive	-
Steering	hydrostatic power
Braking system	hydraulic wet disc
Cabin type	Sound-Gard cab with air-conditioning
Differentiel lock	-

Hydraulics specifications

System	closed center constant-pressure
Valves	2 to 4
Pump flow	32 gpm or 121.1 lpm
SVC flow	-
Steering flow	-
Tank capacity	37.5 gal or 141.9 L
Hydraulic pressure	-
Max flow	-

Drawbar specifications

Drawbar type	-
Claimed power	-
Drawbar horsepower	219.93 hp or 164.0 kW
Fuel consumption	15.4 gal/hour or 58.3 l/hour
Pulling power	28,257 lbs or 12817 kg

Power take-off (PTO) specs

Claimed power	235 hp or 175.2 kW
Real power	238.56 hp or 177.9 kW
Engine @RPM	-
PTO Clutch	hydraulic wet disc
Rear PTO	independent
Rear PTO RPM	1000 (rpm)
Front PTO	-
Front PTO RPM	-
Mid PTO	-
Mid PTO RPM	-
Fuel consumption	15.4 gal/hour or 58.3 l/hour

3 point hitch specifiations

Hitch system	lower-link
Rear hitch	3/3N
Rear hitch lift	9,260 lbs or 4200 kg
Front hitch	-
Front hitch lift	-

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