Fruin 4 Cylinder Pictures
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A stunning engine! I’m afraid I can’t tell you anything at all about this bike, but if anyone out there can, please get in touch, as I’d like to know more!
Bert Fruin Special … Four NSU Quickly(Moped) engines in an MV road bike frame .. made in the early 1960′s
I cannot tell you much appart from it is 200cc 2 stroke with 4 X NSU barrels and home made crank cases linked with 1 crank, its built on an MV Agusta cs 175 frame ..
It was built by a bloke called ‘Bert Fruin’ and i believe 1961 vintage. and there si one in Isle of Man Motorcyucle Museum
Here is an earlier one by same builder:
https://www.theimagefile.com/?Action=VF&id=3761475650
And article in Old Bike mart referenced at: http://www.oldbikemart.co.uk/news/man-of-many-talents
please send cylinder connection dig.