The Champion model A was built in 1935. It has a bore of 2-1/8" and stroke of 1-3/4" for a piston displacement of 6.23 cubic inches. It develops 3.2 horse power af 3,600 RPM. It has a two bladed propeller with a diameter of 7-½" and pitch of 6-½". The gear case uses grease. The powerhead is lubricated by adding a half pint of non-detergent SAE 30 wt. oil to each gallon of regular unleaded gasoline. It is water cooled. The breaker points are set at .015", the Champion J1-15 sparkplug is gapped at .025" (Replaced by D-16 or 516) The model A weighs 31 pounds and sold for $49.95 in 1935. . . 😀
