The third maneuver is a Teardrop, for
which the pilot pulls to a 45° upline,
shows a line segment, and then pulls 5/8
of an inside loop to a vertical downline.
On the downline, the pilot pulls to a
horizontal upright level exit.
All radii must match during this
maneuver. Pay attention to the size
of the first radius because that will
determine the size of the other two
radii that must be flown.
Maneuver four is a Reverse Shark’s
Tooth. The pilot pulls to a 45° upline
and performs a 1/2 roll. The pilot then
pulls to a vertical downline, shows a
line segment, and pulls to an upright
Three radii will be shown, but do not
have to match one another. It is more
important for each radius to be smooth
The last example is maneuver seven,
which is a 1/2 Cuban 8 with a 1/2 roll on
the 45° downline. If one is unfamiliar
with this maneuver, he or she may not
pay attention to the entry radius or
the size of the second radius that will
be performed, resulting in a penalty.
All looping elements in this maneuver
must be equal size.
It is clear that knowing the rulebook
before competition day proves
beneficial, especially when it comes
to a few key areas that could be
overlooked by the aerobatic newcomer.
Familiarity with partial radii and
other aerobatic elements develops
with time. Attending various judging
seminars also helps, but pilots learn the
most from exposure and competing.
Only seek the advice from fellow
expert modelers who are accomplished
in certain aspects of competition, or
send me an email.
Until next time, fly hard!
IMAC Judging Part-Loop Radii Quick Reference
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AUGUST 2013 www.ModelAviation.com
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