Featured In The August 2023 Challenge:
The Seventies and Eighties have been a good time to watch plenty of attention-grabbing experiments in Grand Prix bike chassis design. There have been pro-squat and anti-squat suspension techniques; absolutely floating caliper mounts; parallelogram swingarms; bell-crank rear shock linkages; pneumatic shocks; mono-shocks; twin shocks; conical disc/drum brakes; 16-inch wheels; steel-tube frames; aluminum square- tube frames; and sheet aluminum frames.
Engine energy and tire grip have been growing, placing additional calls for on frames and suspension to make the bike carry out as its rider supposed. Austrian producer Rotax launched an inline twin-cylinder 250cc two-stroke engine in 1980, making it accessible to chassis producers as an alternative choice to the favored Yamaha engines…
“Historic Racebike Illustrations: 1984 Kobas 250cc Grand Prix,” by Mick Ofield
Spanish chassis designer Antonio Cobas realized the slim Rotax engine design, just like the Kawasaki KR250 (see the January 2015 difficulty of Roadracing World) would allow him to create a racebike with a slender profile and higher mass centralization. His distinctive twin-spar body weighed in at lower than eight kilos, and fashioned the idea of a Championship-winning machine. Learn the small print within the newest difficulty of Roadracing World!
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The put up Historic Racebike: 1984 Kobas 250cc GP Racebike, In The August Challenge appeared first on Roadracing World Journal | Bike Using, Racing & Tech Information.
