William Halgarth Posted December 3, 2008 Share Posted December 3, 2008 Hi, Ive just built and test flown my first flying wing ( just my second model plane). Its a FMA Razor 48".My problem is that it really wants to nose down in level flight and I couldnt trim it out.making my first flights very hairy for a beginer though it was fantastic fun and I landed it seconded time. I applied 2 degrees of up elevator before I started as per the intstructions treble checked the cog which seemed spot on as per instructions.I fitted a brushless motor with a home made motor mount, I tried to guess/ copy the thrust angle from the original 400 mount. My guess is that i got the thrust angle wrong .Should I apply more up or down thrust or change the the cog or just adjust with lots of up elevator?Any advice will be gratefully recieved Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted December 3, 2008 Share Posted December 3, 2008 Wings are VERY sensitive to the COG spot...literally a few mm can make difference. I suggest you try moving it slightly back, and a bit of up elevator is normal for most flying wings ( called reflex )this might help Quote Link to comment Share on other sites More sharing options...
PETER MIDDLETON Posted January 2, 2009 Share Posted January 2, 2009 i am the guy who had a problem with my dx 5e transmitter it was the transmitter at fault went back to the shop and he gave me a brand new one works fine now. still got the os 25 might come handy one day for a flying wing where ta get one thats the problem for the engine anybody got any ideas sorry about the spelling peter middleton............... Quote Link to comment Share on other sites More sharing options...
Bruce Richards Posted January 2, 2009 Share Posted January 2, 2009 William I have had a similar problem to the one you describe on an EDF delta. I changed the thrust line to push the rear of the model down a bit. it worked very well with 2 washers under the rear most fixing screws. Hope this helps Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 2, 2009 Share Posted January 2, 2009 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Clark Ross Posted January 5, 2009 Share Posted January 5, 2009 make sure the cg is where it's is shown on the plans it could be it a little foward but never backword it is always better to be a little nose heavy than tail heavy especialy on a wing . trim the glide with the elevons and the powered flight with the thrust line usualy down thrust. deltas are a different ball game since they don,t stall as easy as a wing. Quote Link to comment Share on other sites More sharing options...
Gaz Elliott Posted May 22, 2009 Share Posted May 22, 2009 Looking at getting one of these, few questions though as the sales on the items is a bit ??? 1. Can they take standard servos? I have some futaba 3003 spare. 2. Does it need a micro rx or again will a standard be okay? I have an align 6ch spare 3. Any build tips or are they pretty good. I am looking at a powered Zagi. Hopefully get it from local shop midland heli (?) Quote Link to comment Share on other sites More sharing options...
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