BMW - R 45/45 N (Single disc with ATE caliper) 79

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Bike Info

CC:
450
Bike Description:
Boxer
R 45/45 N (Single disc with ATE caliper) Parts and accessories

Service

Valve Clearance Cold - Exhaust:
0.20 mm
Valve Clearance Cold - Inlet:
0.10 mm

Brakes

Front:
Disc
Rear:
Drum
Front Disc Size:
260 mm
Front-Pistons-per-caliper:
2
Rear Drum Size:
200 mm

Dimensions

Fuel Capacity:
22 litres
Height:
1080 mm
Length:
2110 mm
Seat Height:
770 mm
Wet Weight:
205 kg
Wheelbase:
1390 mm
Width:
688 mm

Electrics

Voltage:
12
Charging System:
Alternator - Bosch 280 W
Ignition:
Battery ignition. From 1981model: Contact free electronic ignition
Spark Plugs:
NGK BP7ES

Engine

Type:
Air Cooled 4 Stroke SOHC Flat Twin
Bore x Stroke:
70 x 61.5 mm
Compression Ratio:
9.2:1
Displacement:
473.4 cc
Lubrication System:
Wet Sump
No. of Valves:
4
Valve Train:
OHV using push rod and rocker arm

Transmission

Clutch Type:
Dry single plate with diaphragm spring
Final Drive:
Shaft
Gearchange Pattern:
1 N 2 3 4 5
Gear Ratio 1st:
4.4:1
Gear Ratio 2nd:
2.86:1
Gear Ratio 3rd:
2.07:1
Gear Ratio 4th:
1.67:1
Gear Ratio 5th:
1.50:1
Transmission:
5 Speed

Misc.

Frame:
Double loop steel tubular frame
Motorcycle Style:
Roadster
Place of Manufacture:
Spandau - Berlin - Germany

Power

Max Power Output:
35 hp (26 Kw) at 7,250 rpm
Max Torque:
37.5 Nm at 5,500 rpm
Top Speed:
100 mph

Suspension

Front:
Telescopic fork with hydraulic shock absorber
Rear:
Long swinging arm with adjustable strut

Tyres

Front:
90/90-H18 Tubeless
Rear:
110/90-H18 Tubeless

Wheels

Front:
1.85 B 18
Rear:
2.50 B 18