In the case of the strong and powerful engines pulling out the firewalls, were they within the described classification given by the manufacturer? I have heard of 1.20's pulling the firewall out of the .60 size airplanes and all I can do is shake my head in wonder why someone would obviouslyoverpower their airframe and then bad mouth the manufacturer. I have owned and flwon everyone of the Hangar 9 ARFs (Mustang, Corsair, P-47, Cessna, T-6, T-34) and most of them are some of the best ARF I have ever seen. I just purchased the large P-47 and must say that it is a beautiful piece of work, much better than 95% of the modeling community could turn out in a 6 month building session. They are not perfect, but I have yet too see any which are. They planes fly great when balanced per the recommendations and when powered with the design specifications. The Mustang, Corsair and P-47 performed excellently with .91 -1.00 four strokes. The moderators really should consider this thread an insult to the manufacturer and is totally unneeded in my opinion. Perhaps though it could serve as a warning to the newbie to adequately check out their planes before putting them in the air, and that includes any manufacturer's product, not just H9.
Tommy