Erfolg Posted January 20, 2011 Share Posted January 20, 2011 I have built a indoor/parkflyer 540 edge from GC. The model comes with no recommendation for CG position. The model has a straight leading edge, with a taper on the TE, the mean chord is 7" or 175mm. I have set my CG at 30% or 50mm from the leading edge, but to date my model is unflown. A number of other modellers with same model have their CG at 80mm, which is nearly 50% back, and fly theirs successfully. Are flat plate airfoils different to more conventional sections. Is this why a rearward CG works. Is this rearward CG more appropriate for this type of model than 30% starting position? Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted January 20, 2011 Share Posted January 20, 2011 I'd stay were you are until you've flown it Erfolg - at least you're "on the safe side" BEB Quote Link to comment Share on other sites More sharing options...
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