Engineering:BMW R 11
The BMW R 11 was the first touring motorcycle in the 750cc class manufactured by the German Motorcycle with a pressed-steel frame in duplex form, in the vein of the Neander motorcycle of Ernst Neumann-Neander.[1]
7,500 R 11 motorcycles were produced between 1930 and 1934.
History
In 1928, BMW presented with the R 11 and R 16, the first motorcycles with a pressed steel frame.[2] In BMW's price lists No. 37[3] and No. 38[4] from January and February 1929, the motorcycles were announced for early 1930. The motorcycles were no longer listed in March 1929's price list No. 39.[5] Delivery of the motorcycles first began in Germany in the summer of 1930.[6][2]
Mechanics
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Engine
Its M 56 engine was a four-stroke two-cylinder valve-in-block boxer engine.
Cylinder
The gray iron cylinder had removable aluminium cylinder heads and radial cooling fins.
Transmission
The R 11 had a manual transmission with a driveshaft on the right side of the unsprung rear wheel.
The kickstarter was operated at a right angle to the vehicle's longitudinal axis.[7]
References
- ↑ Thomas Trapp: Ernst Neumann Neander und seine Motorräder. Bonn 1996, 2. Auflage 2001, ISBN:3-89365-546-8, S. 86.
- ↑ 2.0 2.1 "BMW präsentiert die R 11 und die R 16, die ersten BMW Modelle mit Preßstahlrahmen". BMW AG. 1928-11-05. https://bmw-grouparchiv.de/research/detail/index.xhtml?id=3609895. "Die Kunden müssen sich aber in Geduld üben, denn die Auslieferung der beiden Preßstahlmodelle beginnt erst Ende 1930." Dokument des BMW Group Archivs
- ↑ "Preisliste Nr. 37 für BMW-Motorräder: R 52, R 57, R 62, R 63, R 11, R 16". BMW AG. January 1929. https://bmw-grouparchiv.de/research/detail/index.xhtml?id=3087247. "Ab Frühjahr 1929 werden die 750 ccm-Maschinen auch mit Preßstahlrahmen geliefert [...]" Dokument des BMW Group Archivs
- ↑ "Preisliste Nr. 38 für BMW-Motorräder: R 52, R 57, R 62, R 63, R 11, R 16". BMW AG. February 1929. https://bmw-grouparchiv.de/research/detail/index.xhtml?id=3087261. "Ab Frühjahr 1929 werden die 750 ccm-Maschinen auch mit Preßstahlrahmen geliefert [...]" Dokument des BMW Group Archivs
- ↑ "Preisliste Nr. 39 für BMW-Motorräder: R 52, R 57, R 62, R 63". BMW AG. March 1929. https://bmw-grouparchiv.de/research/detail/index.xhtml?id=3087275. Dokument des BMW Group Archivs
- ↑ Frank-Albert Illg (2001), "BMW R 11: Neues aus dem Baukasten" (in German), Motorrad Classic (4): pp. 5–13, ISSN 0937-9495
- ↑ "Handbuch für BMW-Räder, Typ R 11 und R 16". BMW AG. November 1930. https://bmw-grouparchiv.de/research/detail/index.xhtml?id=3082834. Dokument des BMW Group Archivs
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