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Difference between revisions of "BMW K75C"
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{{ | {{Motorcycle | ||
|name = BMW K75C | |||
|photo= BMW K75.jpg | |||
|aka = K 75 C | |aka = K 75 C | ||
|manufacturer = | |manufacturer = BMW | ||
|parent_company = | |parent_company = | ||
|production = 1985 - | |production = 1985 - 1995 | ||
|model_year = | |model_year = | ||
|predecessor = | |predecessor = | ||
|successor = | |successor = | ||
|class = | |class = Naked | ||
|engine = liquid-cooled, four-stroke, transverse three cylinder, DOHC, 2 valves per cylinder | |engine = liquid-cooled, four-stroke, transverse three cylinder, DOHC, 2 valves per cylinder | ||
|bore_stroke = 66.0mm x 66.0mm | |bore_stroke = 66.0mm x 66.0mm | ||
| Line 95: | Line 17: | ||
|torque = 50.16 ft/lbs (68.0 Nm) @ 6750RPM | |torque = 50.16 ft/lbs (68.0 Nm) @ 6750RPM | ||
|ignition = | |ignition = | ||
|spark_plug = | |spark_plug = {{sparkplug|NGK D8EA}} '86-88 | ||
|battery = | |battery = {{battery|YUASA 51814}} '86-88 | ||
|transmission = Gear box: 5-speed, manual <br> | |transmission = Gear box: 5-speed, manual <br> | ||
Final Drive: [[shaft]] <br> | Final Drive: [[shaft]] <br> | ||
Clutch: dry, single plate <br> | Clutch: dry, single plate <br> | ||
|final_drive= Shaft | |||
|frame = | |frame = | ||
|suspension =Front: telescopic fork with [[hydraulic]] [[shock absorber]] <br> | |suspension =Front: telescopic fork with [[hydraulic]] [[shock absorber]] <br> | ||
| Line 119: | Line 42: | ||
|fuel_consumption = | |fuel_consumption = | ||
|turning_radius = | |turning_radius = | ||
|related = | |related = [[BMW K75]]<br />[[BMW K75C]] | ||
|competition = | |competition = | ||
|oil_filter= {{oilfilter|K&N KN-163}}<ref name="kl_2019">{{cite book|title=2019 K&L Supply Co Catalog|publisher=[https://www.klsupply.com/ K&L Supply Co]|date=2019}}</ref> | |||
}} | }} | ||
The ''' | The '''BMW K75''' was a was a liquid-cooled, four-stroke, transverse three cylinder, DOHC, 2 valves per cylinder [[standard]] [[motorcycle]] produced by [[BMW]] from 1985 to 1995. At the time of its introduction, the K75 was BMW's cheapest motorcycle. It offers a claimed acceleration of 0–60 mph in 4.6 seconds and a top speed of 120 mph (193 km/h). Max [[torque]] was 50.16 ft/lbs (68.0 Nm) @ 6750 RPM. Claimed [[horsepower]] was 74.96 HP (55.9 KW) @ 8500 RPM. | ||
==Engine== | ==Engine== | ||
| Line 133: | Line 58: | ||
==Chassis== | ==Chassis== | ||
It came with a 100/90-18 56H front [[tire]] and a 120/90-18 56H rear tire. Stopping was achieved via dual 285mm discs, 2-piston calipers in the front and a single 285mm disc in the rear. The front suspension was a telescopic fork with hydraulic shock absorber while the rear was equipped with a Monolever swinging arm. The K 75 C was fitted with a 5.55 Gallon (21.00 Liters) fuel tank. The wheelbase was 59.69 inches (1516 mm) long. | It came with a 100/90-18 56H front [[tire]] and a 120/90-18 56H rear tire. Stopping was achieved via dual 285mm discs, 2-piston calipers in the front and a single 285mm disc in the rear. The front suspension was a telescopic fork with hydraulic shock absorber while the rear was equipped with a Monolever swinging arm. The K 75 C was fitted with a 5.55 Gallon (21.00 Liters) fuel tank. The wheelbase was 59.69 inches (1516 mm) long. | ||
==Model designations== | |||
[[Image:Bmwk75s.jpg|thumb|1993 K75S with Belly Pan and touring bags|Black BMW K75S with topbox and panniers, parked on grass]] | |||
Various models of the K75 were produced. | |||
*K75, with no fairing | |||
*K75T, US only model with a windscreen, touring bags, engine crash bars, and rear top case | |||
*K75C, with a small handlebar mounted 'cockpit' fairing | |||
*K75S, with sports fixed fairing and lower bars | |||
*K75RT, with full fairing for 'road touring' | |||
S and RT versions have a rear disc brake and 17 inch rear wheels whereas the others have a single leading shoe drum brake and 18 inch rear wheels. A stiffer, "anti-dive" front suspension was added to the S and RT model. Later RT version has a [[windshield]] that can be raised or lowered. Some taller riders complain of wind buffeting with the smaller S model stock windscreen. | |||
==Engine and transmission== | |||
All K75 models share the same drivetrain. They are powered by a 740 cc liquid-cooled [[Straight-three engine|inline three-cylinder engine]] with Bosch fuel injection. The US EPA specific engine produce 68 hp while all others produce 75 hp. It utilizes a five-speed transmission with a [[Clutch#Wet_and_dry|dry clutch]] and a [[Drive shaft|shaft-driven]] final drive. | |||
The engine is rotated 90 degrees – designed to be less vulnerable to damage should the cycle fall over. | |||
==Background to K75 launch and design== | |||
[[Image:BMW k75t.jpg|thumb|1987 BMW K75T|Black BMW K75T with topbox and panniers, parked on a driveway in front of a house and metal gates]] | |||
The K-series lineup, including the K75 and K100, were not just new models; these designs were radical departures from almost every aspect of previous ones. The K-bikes introduced new technology and refinement for a premium brand. At the time, BMW and [[Harley-Davidson]] were the only major manufactures that did not offer liquid-cooled engines. Competing brands, notably of Japanese manufacture, were touting the superiority of their liquid-cooled engines and had introduced low maintenance shaft-drive technology into a growing number of their models. | |||
The K-series offered refinements like computer-controlled fuel injection, all stainless steel exhaust, rust-free aluminum fuel tank, anti-lock brakes or ABS, mono-lever in the rear and single shock absorber, adjustable headlight, high capacity 460 watt alternator, cigarette lighter accessory plug-in, self canceling signal lights. It would take more than two decades for other manufacturers to catch-up. The engine design had excellent vibration isolation. Two different forks manufactures were used: Showa with an outer upper tube diameter of 1.612" and Fichtel and Sachs measuring 1.627". | |||
==1985 BMW K 75 C== | ==1985 BMW K 75 C== | ||
The 1985 MY BMW K 75C is a middle-class naked machine that comes standard with features such as a suspension package composed of a telescopic fork with a hydraulic shock absorber and a Monolever unit in the rear, cast- | The 1985 MY BMW K 75C is a middle-class naked machine that comes standard with features such as a suspension package composed of a telescopic fork with a hydraulic shock absorber and a Monolever unit in the rear, cast-aluminum wheels, a nose-fairing with a windscreen, a dual seat, passenger grab rails, a rear luggage rack, mid-mounted foot controls and an analogue instrument cluster. | ||
In the tech/engine department, it sports a liquid-cooled, four-stroke, 740cc, in-line three cylinder powerplant mated to a five-speed manual transmission that can reach a maximum power output of 75 horsepower and 68 Nm of torque. | In the tech/engine department, it sports a liquid-cooled, four-stroke, 740cc, in-line three cylinder powerplant mated to a five-speed manual transmission that can reach a maximum power output of 75 horsepower and 68 Nm of torque. | ||
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==1986 BMW K 75 C== | ==1986 BMW K 75 C== | ||
The 1986 MY BMW K 75C can reach a maximum power output of 75 horsepower and 68 Nm of torque from its liquid-cooled, four-stroke, 740cc, in-line three cylinder powerplant mated to a five-speed manual transmission. It also boasts features such as a telescopic fork with a hydraulic shock absorber and a Monolever unit in the rear, cast- | The 1986 MY BMW K 75C can reach a maximum power output of 75 horsepower and 68 Nm of torque from its liquid-cooled, four-stroke, 740cc, in-line three cylinder powerplant mated to a five-speed manual transmission. It also boasts features such as a telescopic fork with a hydraulic shock absorber and a Monolever unit in the rear, cast-aluminum wheels, a nose-fairing with a windscreen, a dual seat, passenger grab rails, a rear luggage rack, mid-mounted foot controls and an analogue instrument cluster. | ||
==1987 BMW K 75 C== | ==1987 BMW K 75 C== | ||
The 1987 MY BMW K 75C comes with a telescopic fork with a hydraulic shock absorber and a Monolever unit in the rear, cast- | The 1987 MY BMW K 75C comes with a telescopic fork with a hydraulic shock absorber and a Monolever unit in the rear, cast-aluminum wheels, a nose-fairing with a windscreen, a dual seat, passenger grab rails, a rear luggage rack, mid-mounted foot controls and an analogue instrument cluster. | ||
In the tech/engine department, it sports a four-stroke, liquid-cooled, 740cc, transverse three cylinder powerhouse paired to a five-speed manual transmission, and can reach a maximum power output of 75 horsepower and 68 Nm of torque. | In the tech/engine department, it sports a four-stroke, liquid-cooled, 740cc, transverse three cylinder powerhouse paired to a five-speed manual transmission, and can reach a maximum power output of 75 horsepower and 68 Nm of torque. | ||
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==1988 BMW K 75 C== | ==1988 BMW K 75 C== | ||
The 1988 MY BMW K 75C sports a four-stroke, liquid-cooled, 740cc, transverse three cylinder powerplant mated to a five-speed manual transmission, and can produce a claimed 75 horsepower and 68 Nm of torque. Also, it boasts a hydraulic shock absorber and a Monolever unit in the rear, cast- | The 1988 MY BMW K 75C sports a four-stroke, liquid-cooled, 740cc, transverse three cylinder powerplant mated to a five-speed manual transmission, and can produce a claimed 75 horsepower and 68 Nm of torque. Also, it boasts a hydraulic shock absorber and a Monolever unit in the rear, cast-aluminum wheels, a nose-fairing with a windscreen, a dual seat, passenger grab rails, a rear luggage rack, mid-mounted foot controls and an analogue instrument cluster. | ||
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The 1989 MY BMW K 75C is a naked, middle-class two-wheeler that is sure to fit the taste for a wide category of riders. At its heart lies a liquid-cooled, four-stroke, 740cc, transverse three cylinder powerhouse paired to a five-speed manual transmission, that produces a claimed 75 horsepower and 68 Nm of torque. | The 1989 MY BMW K 75C is a naked, middle-class two-wheeler that is sure to fit the taste for a wide category of riders. At its heart lies a liquid-cooled, four-stroke, 740cc, transverse three cylinder powerhouse paired to a five-speed manual transmission, that produces a claimed 75 horsepower and 68 Nm of torque. | ||
The key features for this machine would be the telescopic front fork with a hydraulic shock absorber, a Monolever suspension in the rear, cast- | The key features for this machine would be the telescopic front fork with a hydraulic shock absorber, a Monolever suspension in the rear, cast-aluminum wheels, a nose-fairing with a windscreen, a dual seat, passenger grab rails, a rear luggage rack, mid-mounted foot controls and an analogue instrument cluster. | ||
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[[File:bmw-k75c-1990-1990-0.jpg|600px|1990 BMW K 75 C]] | [[File:bmw-k75c-1990-1990-0.jpg|600px|1990 BMW K 75 C]] | ||
The 1990 MY BMW K 75C boasts a telescopic front fork with a hydraulic shock absorber, a Monolever suspension in the rear, cast- | The 1990 MY BMW K 75C boasts a telescopic front fork with a hydraulic shock absorber, a Monolever suspension in the rear, cast-aluminum wheels, a nose-fairing with a windscreen, a dual seat, passenger grab rails, a rear luggage rack, mid-mounted foot controls and an analogue instrument cluster. | ||
In the tech/engine department, this naked sports a liquid-cooled, four-stroke, 740cc, in-line three cylinder powerplant mated to a five-speed manual transmission, and can reach a maximum power output of 75 horsepower and 68 Nm of torque. | In the tech/engine department, this naked sports a liquid-cooled, four-stroke, 740cc, in-line three cylinder powerplant mated to a five-speed manual transmission, and can reach a maximum power output of 75 horsepower and 68 Nm of torque. | ||
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* [https://motopixel.org/pixel/the-fourth-protocol#bmw-k75c The Fourth Protocol] | * [https://motopixel.org/pixel/the-fourth-protocol#bmw-k75c The Fourth Protocol] | ||
==References== | |||
{{Reflist|colwidth=30em}} | |||
{{BMW}} | |||
[[Category:BMW motorcycles|K75]] | |||
[[Category:Standard motorcycles]] | |||
[[Category:BMW K series]] | |||
[[Category:Naked motorcycles]] | [[Category:Naked motorcycles]] | ||
[[Category:1980s motorcycles]] | [[Category:1980s motorcycles]] | ||
[[Category:1990s motorcycles]] | [[Category:1990s motorcycles]] | ||