BMW K1 (motorcycle)
| BMW | |
|---|---|
 Type code 0525, color Laguna blue metallic, manufactured in 1993 |
|
| K1 | |
| Manufacturer | BMW |
| Sales description | K1 |
| Production period | 1988 to 1993 |
| class | motorcycle |
| design type | Super athlete |
| Motor data | |
| Liquid-cooled in- line engine with four cylinders | |
| Displacement (cm³) | 987 |
| Power (kW / PS ) | 74/100 at 8000 min -1 |
| Torque ( N m ) | 100 at 6750 min -1 |
| Top speed ( km / h) | 240 |
| transmission | 5-speed |
| drive | Cardan drive |
| Brakes | front Ø 305 mm double disc brake, rear Ø 285 mm disc brake |
| Wheelbase (mm) | 1565 |
| Dimensions (L × W × H, mm): | 2160 × 720 × 1170 |
| Seat height (cm) | 78 |
| Empty weight (kg) | 259 |
| Previous model | BMW K 100 |
The BMW K1 is a fully faired motorcycle from BMW . The super sports car was presented on September 20, 1988 at the IFMA in Cologne and from 1988 to 1993, 6921 units were built at the BMW plant in Berlin in Spandau , 2050 of which were registered in Germany. Sales started in May 1989.
The design of the motorcycle is derived from the BMW K 100 RS and, like all models in the K series, is powered by an in- line engine.
Technical specifications
The K1 is one of the first production motorcycles with full fairing, with a drag coefficient (c w value) of just 0.34 when the rider is lying down. The seven-part cladding made of fiberglass-reinforced plastic is therefore also the reason for the top speed of 240 km / h. Without the fairing, a top speed of approx. 210 km / h would be possible. The K1 was the first BMW motorcycle with a 16-valve engine.
drive
Liquid-cooled four-cylinder engine produced from 987 cc a nominal power of 74 kW (100 hp) and a maximum torque of 100 Nm at a speed of 6750 min -1 . The four cylinders of the longitudinally installed in-line engine have a 67 mm diameter bore . The piston stroke of the four-stroke engine is 70 mm with a compression ratio of 11.0: 1. The cylinder head has two chain-driven, overhead camshafts that control two intake and two exhaust valves per cylinder via bucket tappets . In contrast to the K 100 RS, the K1 did not have an air mass meter in the air flow that would reduce performance.
The motorcycle accelerates from 0 to 100 km / h in 3.9 seconds. From a speed of 9170 min -1 sets rev one.
landing gear
The chassis is based on that of the K 100. In order to improve stability in fast corners, the tube diameter of the tubular space frame was increased and the chassis geometry changed slightly, so that the wheelbase grew from 1516 to 1565 mm. Because of the fairing and the long wheelbase, the turning circle has a diameter of 6.7 m.
The front wheel is guided by a telescopic fork from Marzocchi with hydraulic shock absorbers and 135 mm of travel. The rear wheel is mounted on a single-sided swing arm with torque support ( Paralever ), which is intended to reduce load change reactions and brake pistons. The weight-optimized three-spoke wheels made of light alloy have tubeless low-profile tires. The permissible total weight is 480 kg.
Electrical system
The starter battery has a capacity of 25 Ah and supplies the starter . The alternator generates an electrical output of 460 watts. The Motronic digital engine management system from Bosch regulates the ignition timing and the injection timing and, for the first time, enabled the use of a regulated three-way catalytic converter , which was offered as an option. The front of the K1 had a rectangular halogen headlight with headlight range adjustment , and a two-chamber lamp at the rear.
Fuel supply
According to ISO 7118, the average fuel consumption is 5 liters per 100 km at a speed of 120 km / h. The fuel tank has a capacity of 22 liters. The manufacturer recommends the use of unleaded gasoline with a knock resistance of at least 95 octane . The 4-in-1 exhaust system flows into a rear silencer on the left side of the vehicle at the level of the rear wheel hub .
equipment
In addition to the catalytic converter, heated handles and an anti-lock braking system were available on request . Touring cases were not offered by BMW, the BMW engineer Karl Heinz Abe justified this decision as follows: "Large integral cases would not only have spoiled the look, but also the aerodynamic concept, which allowed the flow from the front fender to the rear end, negatively influenced". Instead, the motorcycle had two 6 liter storage compartments at the rear.
Reviews
“The chassis could not cope with any serious sporting use. And then there is the matter of leaning freedom . Motorcyclist's greatest asset - and BMW had not installed enough of it. Especially in two-person operation. Out and over at a moderate pace: Abrasions on the main stand and lower fairing and all screws in this area headless. The BMW test drivers had obviously been on the wrong tracks. "
“While some considered the bodywork cutting edge, more thought it was just plain weird. And while performance was good, the K1's solid-mounted engine was faulted for mid-range buzziness. Worse yet, at speeds below 50 mph many testers found the heat pouring from under the K1's bodywork unbearable. "
“While some saw the body as innovative, the majority simply thought it was weird. And while performance was good, the K1's fixed-mount engine suffered from mid-range vibrations. Worse still, at speeds below 80 km / h, many testers found the heat build-up under the fairing unbearable. "
“The K1 crouches, it is a bull. From a distance, the device looks like it was from a strange planet; its fathers call it "futuristic". The only thing the K1 has in common with the good old boxer motorcycles is the white and blue emblem. It doesn't bubble, a dark sound comes out of its exhaust. "
See also
Web links
- The extensive private website k1-bmw.de for the BMW K1 , accessed on July 26, 2016.
- The extensive private website bmw-k1.com for the BMW K1 , accessed on July 26, 2016 (mostly in English).
Individual evidence
- ^ A b Hans Popp: In the beginning there was sport. (No longer available online.) In: mucpaoso.de. Archived from the original on December 18, 2013 ; Retrieved December 5, 2013 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ a b c Michael Schröder: And suddenly you are someone. In: Motorrad , issue 14/2004. June 16, 2004, accessed December 5, 2013 .
- ^ A b Hans Halter: Mamma mia, the Germans are coming. In: Der Spiegel , edition 20/1989. May 15, 1989, accessed December 7, 2013 .
- ↑ Michael Pfeiffer: Unforgotten: the BMW K 1. In: Motorrad , issue 08/2010. March 31, 2010, accessed December 5, 2013 .
- ^ A b Richard Backus: Under the Radar. In: Motorcycle Classics, May / June 2009 edition. May 31, 2009, accessed December 5, 2013 .
