- Rigid chassis
- WhichTractor size: Utility
- No lab test on file
- 1968–1971
- 522 built
WhichTractor size, not the maker’s category
Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is
David Brown 3800 Selectmatic specs: hp, weight, years
The manufacturer claimed 42.0 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.
Engine power, claimed · gross or net not stated
42.0 hp
31.3 kW as stated by the source
No lab test on file
Claimed · standard not stated by the source
Source · Traktorenlexikon, “David Brown 3800”, claimed
This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.
- Weight
- 3,351 lb
- 3-point lift
- 1,598 lb
- Hyd. flow
- 8.5 gpm
- Top speed
- 15.5 mph
David Brown 3800 Selectmatic specs: key facts
The David Brown 3800 Selectmatic was built from 1968 to 1971.
The David Brown 3800 Selectmatic has a claimed engine power (gross or net not stated) of 31.3 kW (42.0 hp); it has no measured PTO figure.
The David Brown 3800 Selectmatic is two-wheel drive (2WD).
The David Brown 3800 Selectmatic weighs 1,520 kg (3,351 lb) unladen.
The David Brown 3800 Selectmatic has an independent rear PTO running at 540/1000 rpm.
The three-point hitch of the David Brown 3800 Selectmatic lifts 725 kg (1,598 lb) at the lower-link ends.
The hydraulic pump of the David Brown 3800 Selectmatic delivers 32.0 L/min (8.5 gpm).
Source · Traktorenlexikon, “David Brown 3800”
How does the 3800 Selectmatic compare with its class?
- Limitation:
A three-point lift at the lower links of 725 kg is low for its class — 50% below the median of 1,450 kg across the 137 machines within 10% of its power that hold this figure.
- Limitation:
A 36.4 L fuel tank is low for its class — 33% below the median of 54 L across the 212 machines within 10% of its power that hold this figure.
- Worth knowing:
An unladen mass of 1,520 kg is low for its class — 22% below the median of 1,945 kg across the 234 machines within 10% of its power that hold this figure.
Derived by WhichTractor from 235 comparable records. How we work this out
How much horsepower does a 3800 Selectmatic have?
The only figure for the 3800 Selectmatic is 42.0 hp (31.3 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.
Source · Traktorenlexikon, “David Brown 3800”
How much will a 3800 Selectmatic lift, and what is its hydraulic flow?
A 3800 Selectmatic lifts 1,598 lb (725 kg) at the lower-link ends.
| Pump flow | 8.5 gpm · 32.0 L/min |
|---|---|
| Lift at ends | 1,598 lb · 725 kg |
| Rear PTO | Independent, engine-driven, 540/1000 rpm @ 1,800 engine rpm |
| PTO shaft | 1 3/8"- 6 splines (Form-A) |
Source · Traktorenlexikon, “David Brown 3800”
What transmission does a 3800 Selectmatic have?
Transmission specifications for the 3800 Selectmatic are below.
| Clutch | Pedal-operated, dry and two-stage BORG & BECK double clutch |
|---|---|
| Steering | Mechanical recirculating ball steering |
| Top speed | 15.5 mph · 25 km/h |
Source · Traktorenlexikon, “David Brown 3800”
How much does a 3800 Selectmatic weigh?
A 3800 Selectmatic weighs 3,351 lb (1,520 kg) unladen.
| Unladen weight | 3,351 lb · 1,520 kg |
|---|---|
| Wheelbase | 75.8 in · 1,926 mm |
| Length | 116.0 in · 2,946 mm |
| Width | 65.5 in · 1,664 mm |
| Height | 51.5 in · 1,308 mm |
| Ground clearance | 17.5 in · 445 mm |
| Front track | 48.0–72.0 in · 1,219–1,829 mm |
| Rear track | 48.0–76.0 in · 1,219–1,930 mm |
| Turning radius, braked | 9.8 ft · 3.00 m |
Source · Traktorenlexikon, “David Brown 3800”
What oil does a 3800 Selectmatic take, and how much?
A 3800 Selectmatic engine takes 6.6 qt (6.25 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.
| System | Capacity |
|---|---|
| Engine oil | 6.6 qt · 6.25 LSource: Traktorenlexikon, “David Brown 3800” · single source, not independently verified |
| Transmission | 24.0 qt · 22.7 LSource: Traktorenlexikon, “David Brown 3800” · single source, not independently verified |
| Final drives | 1.2 qt · 1.1 LSource: Traktorenlexikon, “David Brown 3800” · single source, not independently verified |
| Cooling system | 9.0 qt · 8.5 LSource: Traktorenlexikon, “David Brown 3800” · single source, not independently verified |
Always confirm against the operator’s manual for your machine before service.
Which tractors compare with a 3800 Selectmatic?
Within 10% of its 35.1 hp at the PTO as the maker claimed it, with no laboratory test on file, the same type, and first built within 15 years of it.
- Porsche-Diesel Super N30835.1 hp PTO, claimed · 1957–1960Side by side with the 3800 Selectmatic →
- UZINA TRACTORUL 420 (DT)34.9 hp PTO, claimed · 1974–1981Side by side with the 3800 Selectmatic →
- Leyland 24535.4 hp PTO, claimed · 1973–1975Side by side with the 3800 Selectmatic →
- Steyr 40, 40h, 40a34.6 hp PTO, claimed · 1967–1977Side by side with the 3800 Selectmatic →
- Massey Ferguson 24535.7 hp PTO, claimed · 1976–1983Side by side with the 3800 Selectmatic →
- MAN Werk München 4P135 hp PTO, claimed · 1960–1963Side by side with the 3800 Selectmatic →
Common questions about the David Brown 3800 Selectmatic
Is a 3800 Selectmatic two-wheel drive or four-wheel drive?
The David Brown 3800 Selectmatic is two-wheel drive (2WD).
What PTO does a 3800 Selectmatic have?
A 3800 Selectmatic has a independent 540/1000 rpm rear PTO on a 1 3/8"- 6 splines (Form-A) shaft.
What serial numbers does a 3800 Selectmatic carry?
The source prints serial numbers 650001 to 650522 for the type 3800/1. It does not say whether that is the tractor’s or the engine’s number, and we never work out a year from a serial number.
Sources and how this page was built
Compiled from Traktorenlexikon, “David Brown 3800”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- Traktorenlexikon: David Brown 3800 — CC BY-SA 4.0, WIKIBOOKS-TL-115982 · revision 990057. Wikibooks contributors (Traktorenlexikon). Original document