Sylvain spent around 12 months rebuilding the CB750 after purchasing it as a $200 non-running garden ornament. With a primary goal of improving performance, he kicked the project off by overhauling the bikes DOHC inline four. Using a Wiseco big bore kit he increased capacity to 823cc, adding new valves and porting the head to get the most out of the upgrade. Then to ensure longevity all of the serviceable seals and bearings were replaced. Rather than trying to salvage the old carbs a set of CR31 units were installed, re-jetted and paired with a free-flowing exhaust for maximum power.
Of course, raw performance wasn't the only goal in Sylvain's sights. Creating high-end, streamlined structures is part of his day-to-day so the CB was going to need a few design revisions. With cafe racer styling in mind, he began the transformation by leveling out the bikes stance using a set of classically styled Ducati shocks that raised the rear end. To maintain a comfortable riding position it was decided that clip on bars would be too aggressive, so Sylvain sat down at his computer to design a more suitable solution.
Using the CAD software 'Solid Works', he modeled a new triple tree. His design integrated clamps for holding a set of clip-on bars, a single ignition button, and Motogadget Tiny Speedometer. The finished part was then ground from a solid block of aluminium on a 5 axis mill. An LED headlight was also sourced from a Jeep parts catalog that suited his vision for the front end. To secure it in place he used Solid Works again to design a pair of brackets and a headlight ring, which were also milled from aluminium. Push button switch blocks, Motogadget grips, indicators and a single bar end mirror were then mounted to complete the front ends minimal layout.
Finished in muted tones of gray, silver, and black Sylvain's CB750 has an air of refinement about it, much like the racing vessels he designs; and just like its water going brethren Sylvain was eager to inform us that "it rides hard!" Something we're very glad to hear.
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