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BMW R 75/7

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Make Model

BMW R 75/7

Year

1976-79

Engine

Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.

Capacity

745 cc / 45.5 cu in.
Bore x Stroke 82 x 70.6 mm
Compression Ratio 9.0:1
Cooling System Air cooled

Induction

2 x Bing constant depression carburetors

Ignition

Battery ignition

Starting

Electric

Max Power

36.4 kW / 50 hp @ 6200 rpm

Max Torque

58.8 Nm / 6.0 kgf-m / 43.4 lb-ft @ 5000 rpm

Transmission

5 Speed

Final Drive

Shaft

Front Suspension

Telescopic hydraulic forks

Front Wheel Travel

200 mm / 7.9"

Rear Suspension

Long swinging arm with adjustable strut. 125mm wheel travel

Rear Wheel Travel

125 mm / 4.9"

Front Brakes

Single ∅260mm disc, 1 piston caliper

Rear Brakes

Single ∅200mm drum

Front Tyre

3.25 - S19

Rear Tyre

4.00 - S18

Wet-Weight

215 kg / 474 lbs

Fuel Capacity 

24 Litres / 6.3 US gal
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After only three years BMW's '/6' line-up was replaced in the autumn of 1976 by the '/7'. The R90S-style fuel tank (adopted across the range) and redesigned rocker covers were distinguishing features while at the top of the range, 980cc R100 models replaced the '90' series.

Offering, arguably, the best compromise of power and economy, the R75/7 turned in an impressive performance when tested back in 1977 by Bike magazine, which reckoned it was faster than its maker claimed. The big BMWs have always been consummate touring motorcycles and the R75/7 came fully equipped for the job, boasting 'a stainless disc that stops you in the wet, superbly comfortable riding position and well-damped long-travel suspension, over 250 miles on one tank of fuel, the brightest headlamp in the business...' No wonder Britain's best-selling motorcycle magazine liked it so much.