The Engine Shop 2003/11

CORRECTION: In the July column I
wrote that Brodak’s new .40 Control Line
(CL) engine displaced .426 cubic inch. I
was wrong about that. My faulty
information came from a data sheet packed
with the engine. It gave the displacement as
“7 cc”—which equals .426 cubic inch—and
gave the bore and stroke in metric
measurements too.

The Engine Shop - 2011/04

THROUGHOUT THE YEARS that I’ve
been writing this column, I’ve often
mentioned the many virtues of diesel
power plants for model airplanes. But until
now I had never directly compared a diesel
with a same-size glow, spinning the samesize
propellers, on the same day. And I
hadn’t yet discussed in much detail the
minor adverse quirks of diesels and how
those can be overcome.

The Engine Shop - 2005/04

A BOTHERSOME aspect of four-stroke model-airplane engines is
propeller slippage and loosening. That can be hard to overcome! It
happens because the operating forces that cause it act much like an auto
mechanic’s impact wrench. That is, each individual torque pulse isn’t
particularly strong, but repeated in rapid succession, the total effect
multiplies hugely.

The Engine Shop - 2009/06

Model engines with "personality"
GLANCING
through the pages of
any of today’s
model airplane
magazines quickly
shows that electric
power has largely
superseded piston
power. It has
practically wiped
out glow engines
smaller than .15 in
size and made CO2
motors obsolete.

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