Dornier Delta II
| Dornier | |
|---|---|
| Image does not exist | |
| Delta II | |
| Presentation year: | 1969 |
| Vehicle fair: | IAA |
| Class : | Microcar |
| Body shape : | Station wagon |
| Engine: |
Otto engine : 0.65 liters (17 kW) and electric motor . 8 kW |
| Length: | 2200 mm |
| Width: | 1430 mm |
| Height: | 1580 mm |
| Wheelbase: | 1300 mm |
| Empty weight: | 545-946 kg |
| Production model: | none |
The Dornier Delta II was the prototype of a scooter vehicle from the aircraft manufacturer Dornier in Friedrichshafen , which Claudius Dornier and Erwin Hymer designed in the 1960s as an example of a city car and built in 1969. Six prototypes had been produced by 1972: three with a two-cylinder gasoline engine and three with an electric motor. “The product of the efforts was already on display at the Frankfurt Motor Show - an incredibly short and extremely glazed mobile that goes by the name Delta,” wrote Klaus Westrup in the magazine auto motor und sport on June 6, 1970. Series production began Not.
Frame, body and chassis
The frame of the Delta II was formed by a steel profile frame with a filling of plastic panels on the sides, front and back and a base plate made of waterproof glued plywood . A little more than half of the approximately 1.30 meter high body of the car was glazed. In addition to two rear-opening sliding doors on the left and right, the Delta II had a large tailgate.
The wheels were suspended individually, at the front on longitudinal swing arms with struts , at the rear on a pendulum axle with coil springs and telescopic shock absorbers. The chassis also included a rack and pinion steering with a steep steering column and a correspondingly flat steering wheel, hydraulically operated drum brakes and 10-inch wheels with radial tires of size 145 SR 10.
engine and gears
At the beginning of the development the two-stroke engine of the Goggomobil was intended as drive, but was discarded in favor of the likewise air-cooled two-cylinder four-stroke engine from Steyr-Puch . This engine developed 23 hp (17 kW) at 4800 rpm and enabled the car, which weighed 545 kg with a full tank, to reach a top speed of around 90 km / h. The power was transmitted to the rear wheels via a four-speed gearbox with a center shift lever; gears two to four were synchronized.
The gearbox and engine were installed in the stern under the luggage compartment. As a result, 150 kg of the ready-to-use vehicle were on the front axle and 395 kg on the rear axle. A lid in the luggage compartment was opened for maintenance and repair work on the drive unit or the battery.
criticism
In auto motor und sport the Delta was described as taking some getting used to. The weight distribution of 27.5: 72.5 in particular resulted in unusual driving behavior. When moving off quickly, the front wheels could lift and the vehicle tended to drive straight on in curves. The risk of tipping feared by the tester proved to be irrelevant despite a high center of gravity and a total height of 1.58 meters and a track width of just under 1.20 meters. The Delta II did not offer comfort or convenience. The seating position was relatively high, which, however, in connection with the generous glazing offered a good overview. The suspension was almost ineffective due to the very short wheelbase and the small wheels. The engine ran rough and inelastic. The standing pedals were no longer considered to be contemporary. For a possible series production, experiments were carried out with the engine of the Renault R 4 .
The greatest advantage over some other small or micro cars was the maneuverability of the Delta II with a turning circle of 6.80 meters, its clarity and the small space required when parking, which was given by the dimensions and the sliding doors.
Delta II with electric motor
During the marathon of the 1972 Olympic Games , three Delta IIs built in 1971 with an electric motor were used as escort vehicles. The wagons were also used to deliver laundry and food to the Olympic Village during the entire Games. The engine developed 10.8 HP (8 kW) and brought the compact car , which weighs 946 kg with a battery, to a top speed of 60 km / h. The range was 60–100 km.
Technical specifications
| Parameters | Dornier Delta II (with gasoline engine 1970) |
|---|---|
| engine | 2-cylinder four-stroke boxer engine (Steyr-Puch), installed lengthways in the rear |
| Displacement (bore × stroke) | 643 cm³ (80 mm × 64 mm) |
| compression | 7.8: 1 |
| power | 23 hp (17 kW) at 4800 rpm |
| Max. Torque | 4.5 mkp (44 Nm) at 3500 rpm |
| Valve control | Central camshaft, valves operated by push rods and rocker arms |
| cooling | Air cooling with fan |
| transmission | 4-speed gearbox (2nd to 4th gear synchronized), rear-wheel drive |
| Front suspension | Longitudinal swing with spring struts |
| Rear suspension | Pendulum axle with coil springs and telescopic shock absorbers |
| body | Steel frame with plastic panels; Plywood base plate |
| steering | Rack and pinion steering |
| brake | Drum brake, hydraulically operated |
| wheelbase | 1300 mm |
| Front / rear track | 1180/1130 mm |
| wheel size | 145 SR 10 |
| Dimensions L × W × H | 2200 mm × 1430 mm × 1580 mm |
| Interior width front / rear (luggage compartment) | 1350/1300 mm |
| Seat depth | 400 mm |
| Interior height (measured over the rear edge of the seat) | 900 mm |
| Turning circle | 6.80 m (3 turns of the steering wheel from lock to lock) |
| Empty weight (without driver) | 545 kg |
| maximum weight allowed | 840 kg |
| Top speed | approx. 90 km / h |
| Acceleration with 2 people | 0–70 km / h in 18 s |
| consumption | 8-12 liters / 100 km |
Individual evidence
- ↑ a b c d e. Klaus Westrup: Talk of the town . In: auto motor und sport , Vereinigte Motor-Verlage, Stuttgart, issue 12/1970, pp. 52–58.
- ↑ Dornier Museum. Special show on urban mobility. Retrieved January 22, 2017.
- ^ Hanns Peter Rosellen: German small cars. Bleicher Verlag, Gerlingen 1991, ISBN 3-89350-040-5 .
- ↑ Hanns Peter Rosellen mentions 11.4 HP (8.3 kW)
- ^ RV News. DHBW students revamp old electric vehicles. Retrieved January 22, 2017.