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MJD -> RE: Ailerons on stinger 10 (5/8/2008 4:33:51 AM)
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quote:
ORIGINAL: Mr. Mugen Well I finally blew the dust off this thing nd finished it. It is maiden ready now. I was wondering for you folks who have this plane, what is your AUW? I am running a OS 10 and hi 81 servos and am getting a dry weight of 2lbs 3 ozs. I just feels heavy. Is this a flyable weight? I need to find the formula for wing loading again. The manual does not tell you wing area or anything for that matter. Maybe a maiden tomorrow if weather allows. Kevin I do not have the .10 size, but two Stinger kits I have had my hands in surprised me with the all up weight, meaning they were heavier than I thought they would or should be. But they fly like the dickens, in some ways like a Hots with a less funky fuselage design. Your thought that it must work is sound, many have been built and flown and it is a proven design in the various sizes. It is likely true that the .10 size would benefit from a .15, since most .10's weigh about the same as the .15's anyhow, or close enough to justify the 50% displacement increase. However, yours should fly fine as is, give it a go. Depends how important vertical is to you. On small airpanes there is less aerodynamic and inertial damping and the stock ailerons will give you a good roll rate. However the comments before are also sensible - this is an era of slower airplanes with radical control surfaces and throws, so this model may look odd to you. Increased chord may result in more joy, dunno. Just watch for flutter, which if you are using appropriate servos with good linkages should not be a problem. Sealing the aileron gap (or all of them) will help with control authority and resistance to flutter. You sure do not need standard servos! Don't go too small though, while the torque rating may be sufficient, some have lighter gear trains that take a beating on a glow ship. Mini or strong micros, no sun micros. Like hfenn, on the last couple of models I built in this size I used Futaba S133's as well. Wing loading is simple, esp. on Hershey bar wings: if you want loading in ounces per square foot, measure the span and chord in inches, multiply the two, and divide by 144 to get square feet. Weigh the model in ounces. Divide weight in ounces by wing area in square feet, to get wing loading in ounces per square foot. That's all there is to it. Curious: what prop do you plan to use on the .10? MJD
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