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c.1939 BMW 750cc R71 Frame no. 514850 Engine no. 701923
c.1939 BMW 750cc R71 Frame no. 514850 Engine no. 701923 An important development in the history of BMW's long-running flat-twin occurred in 1936 with the introduction of a welded, tubular steel frame on the R5 model, replacing the pressed steel chassis used hitherto. The R5's 500cc overhead-valve engine likewise was new and the following year a 600cc sidevalve derivative was introduced as the R6, a touring model intended for sidecar duty. In 1938 the R5 and R6 were updated, gaining a telescopic front fork and plunger rear suspension to become the R51 and R61 respectively, while the range was further extended by the introduction of a bored-out-to-750cc version of the latter: the R71. The R71 engine produced only a relatively modest 22bhp but its biggest virtue was exceptional flexibility, which was just what its intended market required. A total of 3,458 R71s had been made by the time production ceased in 1941. Post-war the design was revived in the USSR (as the Ural) and also in China. This R71 is offered with an old German Kraftfahrzeugbrief (registration document) issued in 1947. The engine turns over. Key not required Footnotes: Please kindly note that VAT at the prevailing german rate (currently 19%) will be added to the buyer's premium which will be invoiced on a VAT exclusive basis. If you are planning to export, please make the department aware. Lot to be sold without reserve. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing
c.1939 BMW 750cc R71 Frame no. 514850 Engine no. 701923 An important development in the history of BMW's long-running flat-twin occurred in 1936 with the introduction of a welded, tubular steel frame on the R5 model, replacing the pressed steel chassis used hitherto. The R5's 500cc overhead-valve engine likewise was new and the following year a 600cc sidevalve derivative was introduced as the R6, a touring model intended for sidecar duty. In 1938 the R5 and R6 were updated, gaining a telescopic front fork and plunger rear suspension to become the R51 and R61 respectively, while the range was further extended by the introduction of a bored-out-to-750cc version of the latter: the R71. The R71 engine produced only a relatively modest 22bhp but its biggest virtue was exceptional flexibility, which was just what its intended market required. A total of 3,458 R71s had been made by the time production ceased in 1941. Post-war the design was revived in the USSR (as the Ural) and also in China. This R71 is offered with an old German Kraftfahrzeugbrief (registration document) issued in 1947. The engine turns over. Key not required Footnotes: Please kindly note that VAT at the prevailing german rate (currently 19%) will be added to the buyer's premium which will be invoiced on a VAT exclusive basis. If you are planning to export, please make the department aware. Lot to be sold without reserve. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing
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