Tick18 (Ornithopter)

Hi,
I'm using Tick18 for looping animation (ornithopter wings) but its a little jerky is there a way it can be made smooth, I've added more keyframes but this doesn't help. Also is there any way I can link this animation to display when the engine is started ?
Craig
I'm using Tick18 for looping animation (ornithopter wings) but its a little jerky is there a way it can be made smooth, I've added more keyframes but this doesn't help. Also is there any way I can link this animation to display when the engine is started ?
Craig