25
30% Ultimate ARF
minutes. Shut the engine down and
check all your bolts, clevises, servos
and linkage. Pull the wing off and
check all the attach points, joints
around the motor box, wing hold
down block, firewall, and any other
joints in the fuselage. Check linkage
to make sure there is no “slop” that
can cause flutter.When satisfied at
all is secure go fly and have fun.
Our models have flown on 4.2 CID
engines both Fox and Precision Eagle
using the Slimline Pitts style muffler.
You will need a 5” Ultimate style spin-
ner like the one shown from Tru-
Turn. We have found the 22-12 Bolly
prop to preform very well on these
engines. You should use at least
1200mah batteries on both the radio
and the engine. Servos should be at
least 70 oz-in or better. We used
Futuba 9151 digital servos.
