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The
first step in converting an engine like this for airplane
use is to remove it from the power tool that it used to
power. Next, you grind all of the unnecessary metal
off of the crank-case, and other cast parts. After you
have it all ground down (so it looks nice) you can start
building a mount for it. The type of mount you need
depends on both the shape of the engine, and the location of
potentially load-bearing treaded holes. We found four
such holes on the front of the crank-case on our engine, but
many engines also have holes on the sides, and these would
work just as well.
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A
plate was milled and ground to match the hole pattern
on the front of the engine.
A
temporary exhaust deflection plate is bolted to the
exhaust port. |
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The
engine mount consists of the plate mentioned above,
two rods and two metal strips with holes in them for
firewall attachment. The joints between the plate and
the rods were counter-sunk then welded. The joints
between the rods and the strips were also counter-sunk
and welded.
The
rods were cut so that the flywheel would just barely
clear the firewall.
The
paint is John Deere green (out of habit).
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The
propeller is clamped between two metal plates which
are screwed on to the crankshaft.
The
front plate has two extra holes drilled in it as an
adapter for engine starting.
The
prop mount is self-tightening when the engine is
running. |
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