Composite-ARF Spitfire 24
Set-up and flying your Spitfire,
CG
The Spitfire will be balanced inverted using the panel line on the top of the wing
that runs from tip to tip. This is the exact balance point for the Spitfire and the CG
should not vary from this line.
Control throws
We set up the ailerons and rudder on our proto-type for maximum throw with
about 30 percent expo for the first flights. The Spitfire requires very little elevator.
Measuring from the trailing edge of the elevator, we had about 1/2”(13mm) of
throw on our low rate setting and 1”(25mm) on high rate. We found the low rate
setting to be more than enough. The flaps on the full scale Spitfire are used only
for landing with 85 degrees of throw. We setup ours the same.
Flying your spitfire
We found our proto type with a DA 50 has more than enough power and is very
easy to fly The tail of the Spitfire will start flying very soon after it starts moving,
Do not assume this means that it is ready to fly. Allow the plane to continue to
build speed until it lifts off. Flaps are not required for take-off. We found our
Spitfire to be very predictable and to have no tendency to stall. A small amount of
elevator trim will be required with the flaps down. Do not stop flying the Spitfire
until the tail wheel is back on the ground, doing so may allow the plane to nose
over and the prop may hit the ground.
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