The Engine Shop - 2009/08

O.S.’S LATEST “Alpha”-series four-stroke
engine—the 72FS-a, available from Great
Planes—has all the advanced features of the
earlier 56FS-a. Those include a compact
die-cast muffler, shortened pushrod tubes,
an advanced carburetor assembly, and the
absence of a crankcase breather tube.

Saito’s Four-Stroke CL Engines - 2009/08

WHEN I WAS offered the opportunity to test Saito’s newly issued
four-stroke engines—the FA-40CL AAC, FA-56CL, FA-62ACL,
and FA-72CL—made specifically for powering CL Precision
Aerobatics (Stunt) models, I couldn’t help feeling skeptical. After
all, two-strokers have been hauling CL models around effectively
since 1941. They’re lighter, simpler, and less costly than four-stroke
engines. So why would anyone want to change?

The Engine Shop - 2004/11

THE ITALIAN ROSSI company has
been famous for high-performance model
engines since 1966. Its founder, Ugo
Rossi, won several World Championships
CL Speed events with his engines. Today
the Rossi company, under the management
of Ugo’s son Alessandro, has been
expanding its product line. Rossi
manufactures a wide variety of model
power plants—among them some of the
fastest-revving car and boat engines ever
made. Some of these turn more than
40,000 rpm!

The Engine Shop 2003/03

IN OCTOBER I attended the first West Coast Park Flyer Fun-
Fly, sponsored by the Blacksheep club, at Robert Gross Park in
Burbank, California. Naturally, electric-powered airplanes
predominated, but a few CO2 Radio Control (RC) models were
present—and their performance graphically demonstrated to
everyone there the advantages of CO2 power over electric.

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