Ducati 900 SD Darmah (1977-78)

The Ducati 900 SD Darmah, produced from 1977-78, is a four-stroke motorcycle with a 90 degree L twin cylinder engine, bevel gear driven, and 2 valves per cylinder. It has a capacity of 864 cc and a compression ratio of 9.4:1. Other features include air cooling, two Dell’Orto PHM 40 A/B/C carburetors, an electronic ignition, and both electric and kick starting. The bike has a maximum power of 47.8 kW/65 hp at 7500 rpm, a wet, multiplate clutch, and five-speed transmission. Its gearing ratios are 1st 2.237, 2nd 1.562, 3rd 1.203, 4th 1.000, and 5th 0.887. With a final drive ratio of 2.533:1 and chain drive, the bike has front suspension with a 38 mm Ceriani 608 telescopic fork, rear suspension with Marzocchi 300 mm dual shocks, and 3-way adjustable suspension. It has two 280 mm disc front brakes, single 260 mm rear disc brake, and a 15 L fuel capacity. With a dry weight of 216 kg and wet weight of 224 kg, the bike has a top speed of 185 km/h and a fuel consumption average of 5.2 L/100 km. It can travel 0-100 km/h in 13.6 seconds with a standing 1/4 mile of 159 km/h. The Bevelheaven.com website offers a manual for this model.


Technical specifications:

Make Model: Ducati 900 SD Darmah

Year: 1977 – 78


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 and Kick
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

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