Ducati 900 SD Darmah (1979)

The Ducati 900 SD Darmah is a classic motorcycle produced in 1979. It features a four-stroke, 90-degree L twin-cylinder engine with a capacity of 864cc and a compression ratio of 9.4:1. The bike is cooled by air and has 2 x Dell’Orto PHM carburetors, with a maximum power output of 65 hp at 7500 rpm. It has a wet, multiplate clutch and a 5-speed transmission, along with a 2.533:1 final drive ratio with a chain drive. The front suspension is a 38 mm Ceriani 608 telescopic fork while the rear suspension features Marzocchi shocks with three-way adjustability. The front brakes are dual 280 mm discs with a single-piston caliper, while the rear brakes are a single 260 mm disc. The bike has a fuel capacity of 15 L and can achieve an average fuel consumption of 5.2 L/100 km. It can accelerate from 0 to 100 km/h in 39 meters and has a top speed of 185 km/h. This bike is a classic and is now available as a collector’s item.

---

Technical specifications:

Make Model: Ducati 900 SD Darmah

Year: 1979

Engine: Four stroke, 90 degrees L twin cylinder, SOHC, 2 valves per cylinder, bevel gear driven

Capacity: 864 cc / 52.7 cu in

Bore x Stroke: 86 x 74.4 mm

Compression Ratio: 9.4:1

Cooling System: Air cooled

Induction: 2 x Dell’Orto PHM 40 A, B or C carburetors

Spark Plugs: Champion L88A / Bosch WM7B

Ignition: Electronic

Battery: Yuasa B68 36Ah

Starting: Electric

Max Power: 47.8 kW / 65 hp @ 7500 rpm

Clutch: Wet, multiplate

Transmission: 5 Speed

Primary Drive Ratio: 2.187:1 (32/70)

Gear Ratios: 1st 2.237 / 2nd 1.562 / 3rd 1.203 / 4th 1.000 / 5th 0.887

Final Drive Ratio: 2.533:1 (15/38)

Final Drive: Chain

Front Suspension: 38 mm Ceriani 608 telescopic fork

Rear Suspension: Marzocchi 300 mm dual shocks, 3-way adjustable

Front Brakes: 2 x 280 mm Disc, 1 piston caliper

Rear Brakes: Single 260 mm disc

Front Wheel: 3.50 – 18

Rear Wheel: 4.25 – 18

Dimensions: Length: 2260 mm / 88.9 in Width: 780 mm / 30.7 in Height: 1090 mm / 42.9 in

Wheelbase: 1550 mm / 61.0 in

Seat Height: 780 mm / 30.7 in

Dry Weight: 216 kg / 476 lbs

Wet Weight: 224 kg / 494 lbs

Braking: 100 km/h – 0: 39 m / 128 ft

Fuel Capacity: 15 L / 4.0 US gal / 3.3 Imp gal

Consumption Average: 5.2 L/100 km / 19.1 km/l / 45 US mpg / 54.0 Imp mpg

Standing 1/4 Mile: 13.6 sec / 159 km/h / 98.8 mph

Top Speed: 185 km/h / 114 mph

Manual: Bevelheaven.com