The engine shown in the photgraphs of the Seekadett and Topaz is no longer available. The engines we now provide are The Anton Crystal and Jade units.
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Crystal
Twin cylinder, double acting with slide valves, reversing by Stephenson's link motion. Bore: 9mm Stroke: 10mm Requires two servos, one for throttle and one for reversing. It is recommended that the reversing servo is actuated by a switch channel which has an adjustment for the throw of the servo.
Jade
Twin cylinder, double acting engine with piston valves. Bore: 9mm Stroke: 10mm Throttle and reversing are controlled by one servo.