Marcott brought a rotary engine down from Quebec
for Sun & Fun. Here is a picture of the bell housing.
The up side is it looks very strong and the ratio as I recall
is a bit better than our 2.17:1 at about 2.4:1.

The down side is the starter is on the bottom and the unit is very
heavy I would guess. Not sure about the exact weight but I would guess
it is about the same as the Power Sport PSRU at around 65 pounds.
Both units are of the same type. Internal spur gear. It is hard to beat
a hand full of planetary pinion gears for torque capability to weight
ratio such as Ross and Tracy uses.

The Marcott is better than the Power Sport PSRU IMHO in that it incorporates
a rubber torque isolator in the custom flywheel. These are known to work
well as half a dozen other PSRU designs use them including Tracy's.

The Power Sport, with its direct drive, is yet to accumulate the hundreds
of hours other PSRU units including V8 types have amassed.
Power Sport did no make it to Sun & Fun.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.

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