How to balance your model aircraft properly (⇐ Back to the main page) 1 of 3 Comment(s) - How to balance your model aircraft properly (⇐ Back to the main page) 3 Comment(s) - Average Rating 5 / 5 (Best | Worst | Latest | First)Add your comment or ask a question ⇒ Balancing ActCharles Hock - 19th January 2016Our hobby is full of must do's before we leave the tarmac, but this point (of balance) must rate as one of the most important issues to resolve before we lift off. Just what I needed!Robin - 28th October 2017Fabulous! I’ve been looking for a definitive method to set up my Seagull EP PC9 which has been giving me trouble. One club member says move the CG back, the next says move it forwards! Then they start asking about the thrust angle and it gets worse! So at the moment I have some clue as to what to do and it seems very sound and logical to me. Can I let you know how it all works out? No Wonder!Robin - 29th October 2017Wow, was that interesting! Just used your method to determine centre of lift and compared it to the manual C of G recommendation for the Seagull EP PC9. It gives a centre of lift 1.2cm forward at 33% and 3.3cm forward at 25%. This could explain a lot! Really tail heavy!But that's not all... checked the main wing angle of attack. Set a line up (using a sheet of balsa) along the top edge of the tailplane, which is flat. Never guess what - NO difference front to back (both 7cm). Wing is symmetrical section so no allowance need be made for more or less curves top to bottom. Your recommendation for 2-3 Degrees incidence over the chord of 26cm would be over a centimetre, I think I would have spotted that, even if the aileron was not quite centralised!These corrections would be massive to the characteristics of the plane, which after all does actually fly at the moment, if not very stable. It porpoises quite easily.How should I go about this? All at once (wing incidence of 1cm, and 3cm forward with CofG), or little by little?Your advice would be greatly appreciated!Add your comment or ask a question ⇒Related pages ...Trim your modelWhat makes a good RC pilotFun Flying RC Model Aircraft Event Manoeuvres to Practice
