 | The Mastiff - L C Mason 25cc, Horizontally Opposed 4 Cylinder, Side Valve 4-Stroke, Spark Ignition Petrol Engine. Water Cooled with pumped Lubrication. |
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|  | The Seal Major - D Braid 30cc, In-line 4 Cylinder, Side Valve, 4-Stroke, Spark Ignition, Petrol Engine. Water Cooled with Splash Lubrication. |
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 | The Seal - Edgar T Westbury 15cc, In-line 4 Cylinder, Side Valve, 4-Stroke, Spark Ignition, Petrol Engine. Water cooled with Splash Lubrication. |
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 | The Wallaby - Edgar T Westbury 28cc, In-line Twin Cylinder, OHV, Push-rod, 4-Stroke, Spark Ignition, Petrol Engine. Water Cooled with Forced Lubrication. |
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