Difference between revisions of "BMW K75C"
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[[ | {{Motorcycle | ||
|name = BMW K75C | |||
|photo= BMW K75.jpg | |||
|aka = K 75 C | |||
|manufacturer = BMW | |||
|parent_company = | |||
|production = 1985 - 1995 | |||
|model_year = | |||
|predecessor = | |||
|successor = | |||
|class = Naked | |||
|engine = liquid-cooled, four-stroke, transverse three cylinder, DOHC, 2 valves per cylinder | |||
|bore_stroke = 66.0mm x 66.0mm | |||
|compression = 11.0:1 | |||
|top_speed = 124 mph (200 km/h) | |||
|power = 74.96 HP (55.9 KW) @ 8500RPM | |||
|torque = 50.16 ft/lbs (68.0 Nm) @ 6750RPM | |||
|ignition = | |||
|spark_plug = {{sparkplug|NGK D8EA}} '86-88 | |||
|battery = {{battery|YUASA 51814}} '86-88 | |||
|transmission = Gear box: 5-speed, manual <br> | |||
Final Drive: [[shaft]] <br> | |||
Clutch: dry, single plate <br> | |||
|final_drive= Shaft | |||
|frame = | |||
|suspension =Front: telescopic fork with [[hydraulic]] [[shock absorber]] <br> | |||
Rear: Monolever swinging arm | |||
|brakes =Front: dual 285mm discs, 2-piston [[calipers]] <br>Rear: single 285mm disc | |||
|front_tire = {{tire|100/90-18 56H}} | |||
|rear_tire = {{tire|120/90-18 56H}} | |||
|rake_trail = | |||
|wheelbase = 59.69 inches (1516 mm) | |||
|length = 87.4 inches (2220 mm) | |||
|width = 35.39 inches (899 mm) | |||
|height = | |||
|seat_height = 31.89 inches (810 mm) | |||
|dry_weight = | |||
|wet_weight = 236.0 kg | |||
|fuel_capacity = 5.55 Gallon (21.00 Liters) | |||
|oil_capacity = | |||
|fuel_consumption = | |||
|turning_radius = | |||
|related = [[BMW K75]]<br />[[BMW K75C]] | |||
|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 '''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== | |||
The engine was a [[liquid cooled]] liquid-cooled, four-stroke, transverse three cylinder, DOHC, 2 valves per cylinder. A 66.0mm [[bore]] x 66.0mm [[stroke]] result in a [[displacement]] of just 740.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin [[cam]] (dohc). | |||
==Drive== | |||
The bike has a 5-speed, manual transmission. Power was moderated via the dry, single plate. | |||
==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. | |||
==Model designations== | ==Model designations== | ||
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*K75RT, with full fairing for 'road touring' | *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. | 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== | ==Engine and transmission== | ||
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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". | 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== | |||
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. | |||
==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-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== | |||
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. | |||
==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-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. | |||
==1989 BMW K 75 C== | |||
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-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. | |||
==1990 BMW K 75 C== | |||
[[File:bmw-k75c-1990-1990-2.jpg|600px|1990 BMW K 75 C]] | |||
[[File:bmw-k75c-1990-1990-1.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-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 Media== | |||
* [https://motopixel.org/pixel/the-fourth-protocol#bmw-k75c The Fourth Protocol] | |||
==References== | ==References== | ||
{{Reflist|colwidth=30em}} | {{Reflist|colwidth=30em}} | ||
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[[Category:BMW motorcycles|K75]] | [[Category:BMW motorcycles|K75]] | ||
[[Category:Standard motorcycles]] | [[Category:Standard motorcycles]] | ||
[[Category:BMW K series]] | |||
[[Category:Naked motorcycles]] | |||
[[Category:1980s motorcycles]] | |||
[[Category: | [[Category:1990s motorcycles]] |
Revision as of 20:12, 23 November 2019
BMW K75C | |
Manufacturer | |
---|---|
Also called | K 75 C |
Production | 1985 - 1995 |
Class | Naked |
Engine | liquid-cooled, four-stroke, transverse three cylinder, DOHC, 2 valves per cylinder |
Bore / Stroke | 66.0mm x 66.0mm |
Compression ratio | 11.0:1 |
Top Speed | 124 mph (200 km/h) |
Horsepower | 74.96 HP (55.9 KW) @ 8500RPM |
Torque | 50.16 ft/lbs (68.0 Nm) @ 6750RPM |
Spark Plug | NGK D8EA '86-88 |
Battery | YUASA 51814 '86-88 |
Transmission | Gear box: 5-speed, manual Final Drive: shaft |
Final Drive | Shaft |
Suspension | Front: telescopic fork with hydraulic shock absorber Rear: Monolever swinging arm |
Brakes | Front: dual 285mm discs, 2-piston calipers Rear: single 285mm disc |
Front Tire | 100/90-18 56H |
Rear Tire | 120/90-18 56H |
Wheelbase | 59.69 inches (1516 mm) |
Length | 87.4 inches (2220 mm) |
Width | 35.39 inches (899 mm) |
Seat Height | 31.89 inches (810 mm) |
Weight | 236.0 kg (wet) |
Oil Filter | K&N KN-163[1] |
Fuel Capacity | 5.55 Gallon (21.00 Liters) |
Related | BMW K75 BMW K75C |
Manuals | Service Manual |
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
The engine was a liquid cooled liquid-cooled, four-stroke, transverse three cylinder, DOHC, 2 valves per cylinder. A 66.0mm bore x 66.0mm stroke result in a displacement of just 740.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin cam (dohc).
Drive
The bike has a 5-speed, manual transmission. Power was moderated via the dry, single plate.
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.
Model designations
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 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 dry clutch and a 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
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
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.
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-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
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.
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-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.
1989 BMW K 75 C
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-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.
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-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 Media
References
- ↑ 2019 K&L Supply Co Catalog. K&L Supply Co. 2019.
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