Kawasaki 250 S1

from Wikipedia, the free encyclopedia
Kawasaki
Kawasaki 250 S1.jpg
250 S1 from 1972
Kawasaki 250 S1
Manufacturer Kawasaki Heavy Industries, Ltd
Production period 1970 to 1976
class motorcycle
design type athlete
Motor data
air-cooled three-cylinder two-stroke engine with separate lubrication
Displacement  (cm³) 249
Power  (kW / PS ) 20.6 / 28 at 7,000 min -1
Torque  ( N m ) 26 at 7000 min -1
Top speed (  km / h) 145 (KH 140)
transmission 5-speed
drive Chain
Brakes Drum brakes front Ø 180 mm, rear Ø 180 mm
Wheelbase  (mm) 1320
Dimensions (L × W × H, mm): 2000 × 770 × 1035
Seat height (cm) approx. 76
Empty weight  (kg) 150
Previous model 250 Samurai A1

The Kawasaki 250 S1 was a motorcycle from the Japanese manufacturer Kawasaki and was built from 1970 to 1976. In Japan, it was 250-SS named and in the US they got the extra Mach I .

History and technology

In 1971 the 250 S1 Mach I appeared on the market. It replaced the 250 Samurai A1 with a two-cylinder and rotary valve intake control side, the 31 hp (25 kW) at 8,000 min -1 had produced. The 250 S1 was powered by an air-cooled three-cylinder in-line engine with a 120 degree stroke offset. The piston edges controlled the inlet. To prevent the central cylinder from overheating, the outer cooling fins were shaped so that additional air could reach it. The engine had contactless electronic ignition and three Mikuni carburetors. A narrow tubular backbone frame with two beams formed the basis of the motorcycle, a telescopic fork and a two-armed rear swing arm accommodated the wheels with tires in the dimensions 3.00–18 (front) and 3.25–18 (rear). The front wheel was decelerated with a 180 mm duplex drum brake and the rear with a 180 mm simplex brake. From 1976, with the KH 250 B-1, a disc brake was installed at the front.

Stimulated by the success of the 500 H1 Mach III , the Kawasaki 250 S1 Mach I (250-SS) and 350 S2 Mach II (350-SS ) were offered in the smaller classes in 1971 , as well as the 400 S3 (later KH 400) in 1973 . As the top model from 1972, Kawasaki had the 750 H2 Mach IV in its range, which set new standards in acceleration and top speed.

Well-preserved examples of the 250 S1 are offered today for over 3,500 euros, the price at that time (1971) was 3,490  DM .

Detlev Louis was the general importer of the emerging Kawasaki motorcycles for Germany from 1969 to 1975 .

Model versions

  • 1971 /72 S-1 (Color: Pearl white with blue + green stripes and Pearl Candy Red with yellow + blue stripe on the tank), drum brakes (front).
  • 1973 S-1-A (color: Candy Orange, Candy Gold and Candy Blue), with a smaller rear apron and chrome fender (front).
  • 1974 S-1-B (color: candy green), with a smaller rear apron, modified tank and side cover. With hydraulic steering damper instead of friction damper.
  • 1975 S-1-C (color: Halibut blue), with wider tires 3.25-18 and 3.50-18
  • 1976 KH-250 A-5 (Color: Candy Super Red with white stripes on the tank)
  • 1976 KH-250 B-1 (color: Candy Super Red and Candy Sky Blue), with hydraulically operated disc brake
  • 1977 KH-250 B-2 (color: Candy Wine Red and Candy Orient Blue), throttling to 26 hp
  • 1978 KH-250 B-3 (color: candy lime green with yellow stripes and candy cobalt blue with white stripes)
  • 1979 KH-250 B-4 (color: candy lime green and classic white, each with black stripe and black side cover)
  • 1980 KH-250 B-5 (color: Racing Lime Green with black + white stripes) and KH imprint on the side of the seat

Production summary table

year 250 S1 KH250
1970 6th
1971 2,865
1972 8,270
1973 4.135
1974 9,169
1975 3,641 5,965
1976 400 8,664
1977 7.143
1978 4,495
1979 2,963
1980 200
total 28,486 29,430

literature

  • Ian Falloon: The Kawasaki Story. Heel Verlag, 1st edition 2001. ISBN 3-89365-924-2 .
  • Andi Seiler: Kawasaki, motorcycles since 1965 , Motorbuch Verlag, Stuttgart 2007, ISBN 978-3-613-02727-5 (type compass)
  • Motorcycle issue 20/1976.

Web links

Commons : Kawasaki S1  - collection of images, videos and audio files

Individual evidence

  1. ↑ Oldtimer Markt : Motorrad-Spezial No. 8, 2014 , p. 75.
  2. ↑ Kawasaki MACH , MIKI PRESS, 2008, ISBN 978-4-89522-520-5 , p. 140, Japanese
  3. ↑ Kawasaki MACH , MIKI PRESS, 2008, ISBN 978-4-89522-520-5 , p. 140, Japanese