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Ascot Roadster |
Motor and Transmission Mounts |
Engine Mounting
The engine is mounted by way of a motor plate. This removes the requirement for any structure under the engine and it typical in race car design. Most engines can be mounted by using the block structure on the front of the motor. The Ascot has also been designed to allow for typical side engine mounts, found on street car application.
The plate is fabricated from steel and has 90 degree tabs on each end that support the motor on the rubber anti vibration pods.
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Motor plate with both frame mount weldments. Slots can be seen in the weldments. In the background to the right is the off the shelf anti vibration mount. |
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Motor plate with frame weldments. In the foreground is a frame weldment with an anti-vibration mount. Slots are used to locate the motor plate front to rear and in tilt. |
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Motor plate mounted on engine and anti-vibration mounts. Weldments have been attached to the chassis. |
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View from a higher perspective showing the location relative to the front chassis uprights and steering rack. Note how nicely the rotary engine fits between the frame rails. |
Transmission Mount
The transmission is mounted on a frame cross member, which is level with the bottom of the chassis. The fabricated mount system is first cut from sheet steel and TIG welded. Separate mountings are welded to the frame cross member and these hold the urethane bushings that provide vibration isolation. Slots are cut in the mounting holes between the transmission and the mount, which allows for adjustment. The urethane bushings and outer rings are identical to those used in the front suspension.
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The complete transmission mount. Note the small angle of the mount to match the angle at which the motor is mounted. |
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Rear view of the transmission mount. Output shaft of the transmission is clearly visible. |
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The complete fabricated transmission mount. Note the urethane bushing system on the right. |
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Complete transmission mount ready for use. The mount is welded to the frame cross member by way of the pads under the urethane bushings. A single large bolt on each side provides the loaded connection. The slots for adjustment in the top of the mount can clearly be seen. |
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Fabricated mounts to hold the urethane bushings and provide the welding surface pads for attachment to the frame. The rings in which the urethane bushings are pressed are precision turned and made in bulk. |
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View from the rear of the chassis, over the rear end. Transmission mount can be seen just under the output shaft of the transmission. This view also shows the offset Watts link, at full droop of the rear end. Note the Watts pivot to the right of the rear end with a long and short link attaching to the frame. This system keep the rear end located with extreme precision at any ride height or roll angle. |
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