Design Features
The monocoque chassis extends from the front bulkhead to the rearmost engine-transmission mount. The actual chassis projects forwards as far as the front suspension location, but the pedals, master cylinders, radiator, and so on are hung on outriggers built on to the monocoque.
At the rear, the engine sits on integral monocoque rails, and the chassis is not an extension of the bottom or "tub"; of the cockpit part of the monocoque as on many integral chassis design cars.
The engine rails are cross-braced only at the rearmost point. The chassis is supplied complete with transmission (Hewland FT200) since the rear suspension is partly located on the transmission.
The fuel tanks were created as an integral part of the chassis design and were built around the design intention of utilising only fuel cells as fuel carriers. The flexible cells are stuffed through apertures in the cockpit and clip into place on special mountings.
The seat is also part of the chassis, and provision was made in its location for the installation of an auxiliary fuel tank to add to the twin 12-gallon cavities provided on each side.
The actual cockpit interior dimensions are wider than a Lotus and McLaren monocoque, although the exterior width is small. This makes for an extremely sleek and small body, with better comfort for the driver. A neat touch is the flared-out sides to the cockpit, which Joyce hoped would overcome most of the driving problems associated with lack of elbow-room.
The aerodynamics of the monocoque design basically hinged on a constant upward sloping flat line that carried through from the mouth to behind the driver's head. The design was influenced by John's practical experience with this type of design in his wind-tunnel testing work conducted on the 1968 Lotus Turbine car for Indianapolis. Many of the ideas used in the latter design were Joyce's; these were adapted for the Bowin P3 as well.
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