BOCA BEARINGS 2014 INNOVATION COMPETITION

Supercharged Honda 250/4

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Presented By:
Rob Lambert
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ABOUT THIS PROJECT


Tell us briefly about your project. Is it a work of art or does it serve another function?

In the quest to achieve 280 BHP /litre from a four stroke engine this project grew from a stock 1988 Honda CBR250R road bike engine, designed by Honda for the Japanese market only. With gear driven double overhead cams, and shim under bucket valve actuation, the happily rev to 18,000 rpm, pumping out 45 BHP while doing so. The project part, was to add an Aisin AMR300 supercharger to force feed a mixture of Methanol and air into the engine Via a 42mm HSR Mikuni carb, a custom made plenum, with built in blow-off valve to save engine /supercharger from damage in the event of a backfire

When did you start working on this project and how long did it take you to complete?

Work began on the project late March 2001, and the initial startup occurred Feb 2012.

What was your goal in building this project?

The goal is to break the Australian land speed record of 121 mph, set by Honda CBR250RR at Lake Gairdner, Australia, during the Dry Lake Racers Australia Speedweek event in March 2010, .

Does your project help to solve a problem? If so what problem?

To achieve the necessary Horsepower gains to exceed 121 mph on a 250cc four stroke motorcycle without supercharging would be just a dream.

What makes your idea unique?

Who, in their right mind, would want to supercharge such a highly stressed, small capacity engine,,,ME !

In what capacity are you using bearings and what type of bearings?

If you look closely at the video clip, you might notice an oil leak from the supercharger drive extension on the crankshaft, this is due to the original phosphor bronze support bushes, their oil seals and oil pressure above the capability of the seals to contain. Boca Bearings saved the day with their Hybrid ceramic deep groove ball bearings, which eliminated the need for force fed lubrication, and the oil leak.

What is the most important thing you want people to know about your project?

If you have the desire, the ability, and the dream to succeed , it CAN be done !

How will you use the $5,000 prize?

Create something more radical next year.

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