Kreidler Foil RS

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Kreidler Foil RS (1970)
Kreidler Florett RS (1974)
Kreidler Florett RS (1977)
Kreidler Florett RS (1978)
Cutting motor B 15/20

The Kreidler Florett RS was a small motorcycle model series with two-stroke engines by Kreidler , of which over 125,000 were built from 1967 to 1981. The Florett RS was the fastest Kreidler machine and, alongside the Hercules K 50 and the Zündapp KS 50, one of the most popular small motorcycles of its time.

The vehicles are legally free of registration and therefore also tax-free , but must have a general operating license and have an official vehicle registration number .

1953 created class of non-limited in the speed of 50 cc mopeds allowed with the driving of class 4 are driven (minimum 16 years). With a new regulation in 1960, the limited weight and the regulations on the wheel diameter and possibly the pedal crank radius were dropped and the small motorcycles could be designed in a motorcycle-like manner. To prevent the increasing performance race, the three market-leading manufacturers Kreidler, Hercules and Zündapp decided in 1970 to voluntarily limit the “open” 50 cm³ class (without speed limit) to 6.25  hp and a manual transmission with a maximum of 5 gears.

technology

engine

The Florett RS, built between 1967 and 1970, was the first to have the Kreidler-typical, horizontal, wind-cooled two - stroke engine of the type B 15/6 with 6-volt magneto ignition. The single cylinder with 1:25 mixture lubrication had a bore of 40 mm and a stroke of 39.7 mm. With an 18 mm Bing carburettor, the engine developed 5.3  hp at 7250 min −1 , which with a claw-shift five-speed gearbox resulted in a top speed of 80 km / h.

In 1970, the engine appeared B 7.15 6.25 hp at 8500 min -1 , which allowed a specified factory top speed of 85 km / h. Due to the “standstill agreement” of the German manufacturers, only this value was always given for later RS. The driving noise reached 79 dB (A) sound pressure level, the highest value of all Kreidler motors.

In 1972 came the B 15/20 engine with “ Nikasil ” ® (a process developed by Mahle with nickel - silicon carbide ) coated cylinder surface with Bosch 6-volt MHKZ (magnetic high-voltage capacitor ignition), 20 mm Bing round slide carburetor and an output of 6.25 hp at 8500 min -1 (compression 11.3: 1) on the market, which was produced unchanged until the 1979th From 1977 Kreidler recommended a mixing ratio of 1:50. On the dynamometer in 2008, an originally constructed B 15/20 engine achieved 7.3 HP at a speed of 8100 min −1 .

The B 15 / 40A engine from 1979 Kreidler was a performance with 6.8 hp at 8500 min -1 at.

landing gear

All Florett RS had a pressed steel frame , a hydraulically damped telescopic fork at the front and a rear swing arm with two hydraulically damped spring struts, a spring travel of 110 mm at the front and 95 mm at the rear. In 1972 the revised RS chassis appeared (1215 mm wheelbase instead of 1205 mm) with 17-inch tires (instead of 21 inches) in the dimension 2.75 and enlarged brake drums of 160 mm (instead of 150 mm). In 1976 a disc brake with 208 mm was installed on the front wheel (model RS-S ). Depending on the model, the curb weight was between 83 and 86 kg, the permissible total weight 245 kg. The seat height was 78 cm; the rear footrests of the two-seater Florett RS were attached to the swing arm. The tank capacity was 12.5 liters. The consumption was given as 2.4 liters per 100 km, which allowed a considerable range. The Florett RSH models were delivered with high handlebars.

Furnishing

While the engine was built unchanged for almost a decade, equipment details and color combinations were added in the mid-1970s. In 1974 a flashing system was installed (model RS-B ), in 1976 the ignition lock was relocated to the cockpit, in 1977 light metal rims (model RS-G ) and in 1979 square headlights were used. Original Florett RS were initially delivered in volcanic red , orange was added in 1970, signal yellow in 1974, golf green in 1976 and metallic silver in 1979 became the standard color , with the tank always being chrome .

Racing kit for the Kreidler Florett RS (1969)
Rotary valve motor (1974)
Kreidler Florett 80 (1981)

Tuning

The driving license class 4 , which only provided for a displacement and no power or maximum speed limit, basically did not rule out tuning measures . Kreidler himself already offered a racing set ex works and the accessories industry did not remain idle either.

"Until the end of the moped era, things were tuned, converted, improved and refined - or tinkered to death."

- Frank O. Hrachowy

The factory racing set from 1969, available for private racing drivers for 299.70 DM, contained a modified cylinder and cylinder head as well as forged pistons; a Dell'Orto racing carburetor with a 25 mm opening cross-section, racing candles, modified exhaust system and a chain pinion with 14 instead of 13 teeth. There was thus obtained the power to 9.5 hp (7 kW) at a rotational speed of 12,800 min -1 and the maximum speed, depending on the driver size, raised h to 120 km /. Kreidler drivers without a racing license used a 20 mm Dell'Orto carburetor and castor oil instead of a two-stroke mixture to increase performance .

In 1974 Kreidler delivered a racing kit with a complete water-cooled motor with rotary valve control for 1,265 DM. This should at 13.500 min, the power to 15 hp (11 kW) -1 be increased. However, the engine was unsuitable for illegal modifications to road machines.

Since Kreidler delivered identical mokick models (up to 40 km / h top speed) to the Florett RS in the 1970s, except for the throttling on the engine, tuning these mokicks with original parts of the Florett RS was easily possible. The Kreidler Mokick models RM-Florett or RMC , for example, had the engine of the RS, which was throttled to 2.9 HP (2.1 kW) at a speed of 5250 min −1 via a 14 mm Bing carburettor with a 4-speed transmission officially allowed a top speed of 40 km / h.

Upswing and decline

Kreidler relied on the racing image in advertising: the 1965 world record with a 50 cm³ engine of 210 km / h, as well as winning the motorcycle world championship in 1971 and later titles in the 50 cm³ class were highlighted in the advertising . "More than other manufacturers, Kreidler positioned itself as a manufacturer of high-quality racing machines." The versions built from 1972 took this image with them; away from the staid moped with 21-inch tires, towards road racing, which the model name (RS = racing) already expressed.

The end of the "open" mopeds and the Florett RS was ultimately caused by the customers addressed.

“The clientele was young, the clientele drove wild - one of three moped pilots was involved in an accident each year. The insurance premiums rose to the priceless. "

- Andy Schwietzer

The reduction in the number of accidents and the noise level for small motorcycles was the reason for the introduction of driving license class 1b, which came into force on April 1, 1980. The legislature reacted with a mandatory driving test and the newly introduced 80 cm³ light motorcycle class with a speed limit of the engines to 6000 min −1 and a top speed of 80 km / h. Kreidler still offered a completely newly developed 80s foil; For the price of 4,150 DM the machine offered too little to compete against the considerably cheaper Honda MT-8 and Yamaha RD 80 MX . On February 20, 1981, Kreidler filed for settlement, and on March 12, 1982, the rescue company filed for bankruptcy. With the limitation of the 50 cc mopeds from April 1, 1980 to a top speed of 40 km / h, the days of the open Florett RS were finally over.

In addition to the ideal value, untampered and very well preserved or restored Foil RS from the years of construction 1972 to 1979 are traded for a price of over 3,500  euros (as of April 2014); Ascending trend.

reception

“Kreidler was also an expression of a youthful attitude towards life. Many young people managed to escape from the bourgeois confines of their parents' living room [...] with their two-wheelers, above all the Kreidler Florett from Kornwestheim. "

- Special exhibition Kreidler

The motorcycle editor Andy Schwietzer rates the Kreidler as:

“Probably the fastest way to escape the mustache [...]. [...] Two wheels, a shrill screeching two-stroke engine - the 50s Kreidler Florett from the Stuttgart suburb of Kornwestheim is, let's say: the most important contribution of the German mechanical engineering industry in terms of family and developmental therapy to the benefit of young people in these years. "

- Andy Schwietzer

The television film Schluchtenflitzer (1979) by Rüdiger Nüchtern thematizes the will for freedom in cinematic terms. The main actor Andy has to get his orange Kreidler Florett RS, which plays a leading role, from a tree in a movie scene.

References

literature

  • Frank O. Hrachowy: Kreidler. Story types technique. 1st edition. Verlag Johann Kleine Vennekate, Lemgo 2009, ISBN 978-3-935517-45-4 .

Web links

Remarks

  1. ↑ Kreidler stayed with this stroke ratio during the entire production period.
  2. ↑ The limit values ​​for cars are currently (as of 2014) 74 dB (A).
  3. ↑ The 6.25 hp were to be understood as the "minimum performance". See MOTORRAD , 6/1975, p. 13
  4. ↑ Separate lubrication would have been technically possible; see Suzuki (1972). Company patriarch Alfred Kreidler avoided investments.
  5. ↑ Dierk Filmer (DIFI) in Varel supplied, for example, 14 chain sprockets (6.90 DM), sports handlebars (30 DM), Dell'Orto 22 mm racing carburetors (56 DM) plus intake manifolds (14.50 DM) and racing pear (38 DM) free delivery. See price list Dierk Filmer, 2930 Varel, 1972.
  6. ↑ The serial transmission of the RS resulted in 85 km / h at nominal speed (8500 min −1 ) and 100 km / h at maximum speed (10,500 min −1 ). The Victoria FM 38 engine experienced a decrease in performance from the use of castor oil. See Thomas Reinwald: Victoria. P. 76.
  7. ↑ For 1977 the statistics of the motor insurers showed 198 claims per 1000 existing insurances. See German Bundestag. 8th electoral period, printed matter 8/3548, p. 13. In
    1978 the insurance premium ( liability plus partial coverage ) was around DM 1,000. Cf. MOTORRAD , 12/1978, p. 38. Adjusted for inflation, this corresponds to EUR 1,210 in today's currency. The figure was based on the template: Inflation determined, has been rounded to a full 10 euros and refers to last January.
  8. ↑ Honda MT-8: 2,550 DM (1981); Yamaha RD 80: 2,895 DM (1981). See MOTORRAD , 20/1981, pp. 48–52.
  9. ↑ Small motorcycles approved up to December 31, 1983 with a top speed of 40 km / h fall under the category of light motorcycles . See § 76 (6) a FeV . This against the background that Hercules built the Ultra LC 50 until 1983.
  10. ↑ The Dutch Kreidler dealer John Bos delivered a small series of spare parts in 1997. See kreidler-museum.de .

Individual evidence

  1. ↑ Frank O. Hrachowy: Kreidler. P. 147–150 (after the consecutive vehicle identification number)
  2. ^ A b Waldemar Schwarz: Competitive race . motorradonline.de, June 6, 2008; Retrieved April 20, 2014
  3. ↑ RS 1967 . kreidler-museum.de, accessed on April 20, 2014
  4. ↑ RS 1969 . kreidler-museum.de, accessed on April 20, 2014
  5. ↑ RS 1970 . kreidler-museum.de, accessed on April 20, 2014
  6. ↑ RS 1972 . kreidler-museum.de, accessed on April 20, 2014
  7. ↑ RS 1977 . kreidler-museum.de, accessed on April 22, 2014
  8. ↑ RS 1980 . kreidler-museum.de, accessed on April 20, 2014
  9. ^ Kreidler Florett RS . In: MOTORRAD Classic , 1/2012, p. 22
  10. ↑ Motorcycle catalog, edition 1972/73, p. 24
  11. ↑ Frank O. Hrachowy: Kreidler. P. 66
  12. ↑ racing set . kreidler-museum.de, accessed on April 20, 2014
  13. ↑ Werner Koch: Impression Kreidler Florett RS . motorradonline.de, accessed on April 21, 2014
  14. ↑ Frank O. Hrachowy: Kreidler. P. 88
  15. ↑ Frank O. Hrachowy: Kreidler. P. 33
  16. ↑ a b Andy Schwietzer: Kreidler? Oh, sob! In: Die Welt , accessed April 20, 2014
  17. ↑ Nothing without me . In: Der Spiegel . No. 11 , 1981 ( online ).
  18. ↑ Frank O. Hrachowy: Kreidler. P. 125
  19. ↑ Oldtimer Markt: Motorrad-Spezial No. 8, 2014, pp. 160–161
  20. ↑ The new price for the 1972 model was 1,730  DM and for the 1979 model 3,550 DM. Adjusted for inflation, this corresponds to 2,810 euros or 4,110 euros in today's currency. The figures were based on the template: Inflation determined, rounded to a full 10 euros and refer to last January.
  21. ↑ Supplement to the Kreidler special exhibition. March 1 to December 1, 2014 in the Sinsheim Auto and Technology Museum .
  22. ↑ kreidler-museum.de The (Kreidler-) Film (accessed on April 24, 2014)
  23. ↑ Excerpt from Schluchtenflitzer on YouTube