My main concern is that it would cause the nose to pitch down and the elevators wouldn't have the authority to correct it, due to their much smaller size.<div>
</div><div>Secondly; the rig would basically be a large speed brake. This could be overcome with the throttle however.</div><div>
</div><div>What I didn't consider was the CG. If the camera was pivoted from the top then the CG would move forwards as the camera went from horizontal to vertical. (Looking down to looking forwards). This would mean I should pivot the camera from its CG, however this would make the rig require vertical movement and then rotation.  The only way around the CG I can think of would be to put a weight on the servo horn to move a mass backwards inside the fuselage as the camera went forwards.</div>