Oh how I hate not having my comp back up (yet). I've got all these great ideas to try out and nothing to draw them with bar the good old Mk1 pencil, and no scanner to post them with. Anyway, I'll just have to be descriptive. I was thinking about an advanced method of trimming which even though it could add a bit of weight, could very well provide a superior method of trimming an aircraft over a wider range of mission parameters. The idea stemmed from experimentation soon to be undertaken my Mr Langford of KRnet fame on the optimum angle of incidence for the horizontal stabilisor to give a neutral trim state at cruise. He is basically making his horizontal adjustable on the ground, to be fixed once he has an incidence he is happy with. I thought,why not take this one step further, and build a permanant pivot point in at the spar, and using an electrically driven threaded rod, similar to a feed screw on a lathe, to make the horizontals' incidence variable? Could this provide a much grater range of trim? It may well be much more efficient than a traditional trim tab. Sure, if it works it'll be almost twice the weight of a conventional electric trim, but for the versatility and possible greater effectiveness, why not?