ORIGINAL: trooper-rat
Hello All,
I am completing a Bud Nosen Citabria my father started about 15 years ago. With today's engines, fuel choices, and power applications, the opportunities are limitless as to what
''CAN'' be done and what I wish to do.
~cutting to the chase~ I wish to put a 30cc gasser on the aircraft. Albeit, in order to use the aforementioned engine, the centerline of engine will place the prop shaft at 1/4'' above the thrustline of the plans in order to mount the engine within the cowling and aligning the propshaft cut out.
My delima: How catastrophic would this be? The plans also call for (0) zero degree down and/or (0) zero degree right thrust.
Thank you for your time,
Scott
The Citabria is a high winged sort of aerobatic platform. On this model, 1/4" either high or low won't make much difference....you may want to reduce the dihedral a degree or two, if it has any at all.
On more thoroughbred low winged aerobats at around 1.2 size, 1/4" higher thrust vector will in essence result in a lower wing position relative to thrust, meaning you would likely get a little adverse roll coupling with applied rudder for the given dihedral.
Your Citabria should not exhibit much change with any command
MattK