BMW R47 1927 - Motorcycle specifications, reviews, photos, used

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presentation of the R47 1927

The BMW R47 is the successor model to the R37. It is powered by a 494 cm3 flat-twin engine. Produced in 1927 and 1928, it is technically very similar to the R42. The chassis and transmission are largely identical; the main differences are in the cylinder heads and cylinders.
With a weight of 130 kilos, 3 gears and 18 hp at 4,000 rpm, this BMW could reach 110 km/h.

on release, the R47 cost 1,850 Reichsmarks, 1,050 less than the R37. Headlights, horn, speedometer and rear seat were not included.
It was lighter than the R37 and produced 2 more horsepower. The very successful technique of the R32 was in turn used for the R47, i.e. a longitudinally mounted Boxer engine with the crankshaft in the transmission axis, a universal joint, and a frame in direct connection with the steering and rear axle. Incidentally, the chassis is the same as on the R32: a tubular steel frame with no rear suspension, and a leaf-sprung fork.

production ceased after 1720 units. It was replaced by the R57.

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Image credits: D.R.
Info credits: Content under CC-BY-SA license.
Source: German Wikipedia article BMW_R47 (authors)

Published on 10/12/20
by Greg

Key facts BMW R47 (1927) : What you need to know before you buy

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	Basic version
France	€

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Model sold in 1927 1928

Replace R37 1926

R37 1926

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R47 1928

Performance

Max speed : 110 km/h (68.40 mph)

Specifications BMW R47 1927

Chassis: Frame : tubular steel structure; Fuel capacity : 14 liters (3.70 US gallons); Length : 2,100 mm (82.68 in); Width : 800 mm (31.50 in); Min height : 950 mm (37.40 in); Wheelbase : 1,410 mm (55.51 in); Weight when fully loaded : 130 kg (287 lb)

Front axle: Fork + leaf spring; drum brakes Ø 150 mm (5.91 in); Front tire : 3 / 5 - 27 → Order this type of tire

Transmission: 3 stage gearbox; Secondary cardan shaft

Rear axle: rigide; Rear tire : 3 / 5 - 27 → Order this type of tire

Motor: two-cylinder flat , 4 strokes; Carburettor Ø 22 mm; Cooling system : by air; 2 valves per cylinder; 494 cc; 18 ch (17.80 hp) to 4,000 rpm; Power-to-weight ratio : approximately 6.6 kg/ch; Compression : 5.8 : 1

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1928

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FAQ Your frequently asked questions about the R47 1927

What is the power of the R47 1927?: The R47 1927 develops a power of 18 ch (17.80 hp)
What is the maximum speed of the R47 1927?: The R47 1927 is capable of reaching a top speed of 110 km/h (68.40 mph) on the track.
What is the weight of the R47 1927?: The R47 1927 has a a weight when fully loaded of 130 kg (287 lb).
What is the price of the R47 1927?: , in France

Motorcycle specifications BMWR47 1927

presentation of the R47 1927