Originally Posted by
speedracerntrixie
In theory you are of course correct however we are talking about a model here. Would you be able to notice a slight, say 3 degree crab of an r/c model in flight? I know I wouldn't.
The crabbing may be slight ................ or not, depending on the power of the engine-prop, the air-speed of the model and the compensating rudder input: hard to estimate a priori.
An exaggerated comparison, but good to discuss off-center thrust and to show an interesting video: asymmetry is what makes a twin engine model difficult to control in a one-engine-out situation.
A good pilot in total control of a powerful rudder can reduce the emergency of such a situation:
http://www.youtube.com/watch?v=PftNh_SShlg