Zündapp ZR 20
The ZR 20 moped (type 447) was built between 1976 and 1980 by the company Zündapp Werke München GmbH.
The construction consists of a central tubular frame and all-wheel suspension. In the first series, 17 ″ spoked wheels with Leleu wheel hubs were installed, then cast aluminum wheels. The horizontally split motor housing, in which the crank drive and draw-key ball connection with two-speed gear is housed, proved to be maintenance-friendly. The otherwise rather spartan moped has a chrome-plated tank and stainless steel mudguards.
| engine | 1 cyl., 2-stroke, wind-cooled (type 250) |
| Displacement | 49 cc |
| Bore × stroke | 39 mm x 41.8 mm |
| Output kW (PS) at 1 / min | 1.1 (1.5) / 4600 |
| lubrication | Mixture 1:50 |
| Carburetor | Bing 1/10/131 or Mikuni SE VM 13-84 H |
| ignition | Bosch swing light magneto ignition |
| lighting | 6 V / 17 W. |
| Primary drive | Helical gear wheel |
| coupling | 2 slices of oil |
| Gearbox type | Draw-key ball gears (2 gear) |
| Gear shift | Manual transmission |
| Secondary drive | Chain covered |
| starter | Pedal start |
| Frame type | Central tubular frame |
| Front fork | Telescopic fork undamped |
| Wheels type | Spokes (17 × 1.35) or cast aluminum wheels |
| Tires | 17 x 2.25 |
| Brakes | Full hub inner jaws v. 80 mm, h. 100 mm |
| Seat | Suspension seat |
| tank | Chrome tank on the frame tube |
| Tank capacity | 6.5 l |
| Weight | 55 kg |
| Top speed | 25 km / h |
| consumption | approx. 1.5 l / 100 km |
| Colours | brilliant blue / metallic green / orange |
literature
- Andy Schwietzer: Zündapp type compass: 1922 - 1984 . In: Typenkompass. Basic knowledge for motorcycle enthusiasts . Motorbuch-Verlag, Stuttgart 2008, ISBN 978-3-613-02680-3 .
- Siegfried Rauch , Günter Sengfelder, Reiner Scharfenberg: Zündapp 1922-1984 . Motorbuch-Verlag, Stuttgart 2006, ISBN 3-613-02684-8 .
