Van Veen OCR 1000

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Van Veen
Van Veen OCR 1000 II.jpg
Van Veen OCR 1000
OCR 1000
Manufacturer Van Veen GmbH Duderstadt
Production period 1976 to 1978
class motorcycle
design type Superbike
Motor data
Two-disc rotary engine , water / oil-cooled, 32 mm Solex double carburetor, contactless electronic ignition (Hartig)
Displacement  (cm³) 996 (total volume of both chambers)
Power  (kW / PS ) 73.6 (100) at 6000 min -1
Torque  ( N m ) 135 at 3500 min -1
Top speed (  km / h) 224
transmission 4-speed gearbox
drive propeller shaft
Brakes Disc brake
front 2 × 280 mm,
rear 280 mm
Wheelbase  (mm) 1525
Empty weight  (kg) 292

The Van Veen OCR 1000 was the most powerful motorbike with a rotary engine to date . It was built and offered by the Dutch Kreidler importer Hendrik van Veen from 1976 to 1978, but only 38 copies could be produced, of which about 5 with full fairing and one with injection (130 hp) - A first sample was shown at IFMA 1974, the official presentation took place in September 1976- The OCR 1000 was already known as the "black and green Mauritius " among motorcycles.

Model development

Hendrik van Veen took over the KKM 624 twin-disc rotary engine with a circumferential inlet and a chamber volume of 498 cm³ each from Comotor , a joint venture between NSU and Citroën . This engine has been used in the Citroen GS Birotor since 1973 and corresponds to the Ro80 machine (KKM 612) in terms of geometrical data such as rotor width, eccentricity, etc. , but has a shorter overall length and length compared to this. a. due to a different arrangement of the add-on parts, which was necessary for installation in the Citroen GS . For the first time on a motorcycle, contactless ignition with digital ignition timing adjustment ( Hartig ignition ) in combination with high-voltage capacitor ignition ( HKZ ) was used. Another first came from the fact that the cardan shaft with double constant velocity joint developed by Porsche had a rear ball joint that could be moved lengthways to compensate for length during compression. The telescopic fork was made by Marzocchi , the struts by Koni and the braking system was supplied by Brembo . The motorcycle was developed, tested and manufactured in Duderstadt . The design of the motorcycle comes from Jos Schurgers-

Apparently, an annual production of around 200 machines was planned.

Technical specifications

As the largest rotary motorcycle in history, the Van Veen OCR 1000, equipped with a hydraulically operated clutch, only required 4 gears to transfer the high torque of 135 Nm to the rear wheel. The acceleration time of the almost 330 kg heavy motorcycle was from 0 to 100 km / h 3.8 seconds, from 0 to 200 km / h 16 seconds and the top speed was 224 km / h. The gear ratios of the four-speed gearbox were 2.35 / 1.61 / 1.10 / 0.88 with a secondary ratio of 2.66: 1. A maximum of 120 km / h could be reached in 2nd gear and 170 km / h in 3rd gear. Initially (1976) delivered with a 40 mm Weber twin carburetor, this was replaced (1977) by the 32 mm Solex twin carburetor with intake silencer and automatic starter. The weight of the two-disc rotary engine is approx. 100 kg including oil and water, one spark plug was available per disc.

The motorcycle has a double loop frame with a rear swing arm made of cast light metal on tapered roller bearings, the stanchions of the front fork have a diameter of 41 mm (according to another source 42 mm), the rear dampers are three-way adjustable. The spring travel is 165 mm at the front and 110 mm at the rear. The OCR 1000 has light alloy cast wheels from Ronal with the dimensions 2.15 x 18 (front) and 2.50 x 18 (rear). The tire sizes are 4.25–18 or 110 / 90–18 (front) and initially 120 / 90–18 (rear); the dimensions of the rear wheel were later changed to 130 / 80-18, also due to the enormous engine power for the time. The hydraulically operated dual-circuit brake system comprises double discs at the front and one disc at the rear, each with a diameter of 280 mm. The three-phase generator has an output of 240 watts, the OCR1000 has an H4 headlight and the tank holds 22 liters.

The price was DM 24,198 in 1976, DM 28,198 in 1978, only the MV Agusta 1100 Grand Prix was more expensive.

Contemporary test reports indicate that, on the one hand, and as expected, the strengths of the motorcycle were seen in performance, high torque at comparatively low speeds and power delivery. There was criticism because of the rather high weight and the weaknesses in the chassis (directional instabilities at high speeds), for the operation of the transmission despite previous revision by Porsche and for the less favorable, because higher center of gravity compared to the competing models at the time.

End of production

Citroën gave up the Comotor project with the Wankel engine in 1979, as Comotor was sold to Peugeot in Altforweiler . The unresolved license issue - Hendrik van Veen was unable to acquire it - as well as the high purchase price in connection with the enormous development costs caused the project to fail. The construction and manufacturing costs amounted to 225,000 DM for each motorcycle sold. In 2010, a small series of 10 motorcycles was planned from the remainder of the bankruptcy estate , the price of which will be 85,000 euros .

More pictures

  • Van Veen OCR 1000 with full cladding

  • Van Veen OCR 1000

  • OCR 1000 engine

  • Logo on the front fork

Web links

Commons : Van Veen motorcycles  - collection of images, videos and audio files

Individual evidence

  1. ↑ MOTORRAD, No. 10, May 1978
  2. ↑ a b c motorradonline.de: Return of the Wankel engine by Van Veen. (accessed on August 20, 2011)
  3. ↑ Wolfgang Dingeldein's private homepage History of the Van Veen OCR 1000 (accessed on August 21, 2011)
  4. ↑ a b c d Wankel courage - luxury class sedan on two wheels . No. 4 . Oldtimer-Markt, April 2001, p. 20 .
  5. ↑ a b c d e Professor K. Groth, Hanover: New motorcycle with 100 HP Wankel engine . In: Werner Rixmann (Ed.): ATZ Automobiltechnische Zeitschrift . No. 2 . Franckh'sche Verlagshandlung, Stuttgart 1977, p. 49 .
  6. ^ Robert Poensgen: The black-green Mauritius. In: Motorrad Revue 1979. p. 38.
  7. ↑ Motorcycle catalog 1977. p. 38.
  8. ^ Hugo Wilson: The Lexicon from the motorcycle. ISBN 3-613-01719-9 , p. 188.
  9. ^ Robert Poensgen: The black-green Mauritius. In: Motorrad Revue 1979. p. 39.
  10. ^ Ulrich Schwab: Motorcycles 1970/1987, types, dates and prices. ISBN 3-613-01172-7 , p. 65.
  11. ↑ The new Wankel engine Comotor type 624 - for the Citroen GS Birotor . In: Werner Rixmann (Ed.): ATZ Automobiltechnische Zeitschrift . No. 2 . Franckh'sche Verlagshandlung, Stuttgart 1974, p. 64 .
  12. ↑ Motorcycle catalog 1976. P. 80.
  13. ↑ Motorcycle catalog 1977. p. 38.
  14. ^ Ulrich Schwab: Motorcycles 1970/1987, types, dates and prices. ISBN 3-613-01172-7 , p. 64.
  15. ^ Robert Poensgen: The black-green Mauritius. In: Motorrad Revue 1979. p. 39.