Hello,

I have bought sometime ago a Feibao F-15 Camo version, the one with metal spares and not carbon rod as newer version. It is only a few days ago when assembeled the jet to see what it would look like that i discovered a major problem

While assembling wings on fuselage (2 metal spares/half wing that go inside metal clamps in the fuse.) While right wing side seems to correctly encase in its metal sleeve, without play, the left wing on the other hand oscillates vertically a few millimeters when this one is encased inside its sleeve. By thoroughly examining dimensions of the 2 keys and their sleeves, I found a difference of more than 2.5mm (the front key is narrower than the sleeve whereas Aft spare gap is less), which is the reason for this play.

When the 4 retaining screws of left wing are tightened, the play disappears, but i fear that this system could be dangerous because all the pressure is exerted on the screws instead of the sleeve and consequently of the frame of the fuselage. Moreover, said spares seem to have been sanded, probably because of the bad positioning of the sleeve and in order to be able to slip in place.

Appreciate if anyone can assist solving this issue and would like your opinion if problem can be solved by only tightening retaining screws knowing that this seem to give a perfect fit and alignment.

Thanks and best regards.

Extra,

My F-22 which is the same spar setup has about 1/2 in. or 12mm of movement at the wingtip. 47 flights with no problems. When tightened down they have no movement.

Jed

Same on my SM F-18C with 91 flights. Those who know me will tell ya I fly my planes to the limit. No problem with that set up.

FL510,

Thanks for your input. Does your F22 sustains high G's too or you fly conservative??

Regards,

Extra,

I fly my 22. I don't go easy on it, but I also don't try to kill it.

Jed

Bull$h!t

Thanks guys,

I feel a little bit more confident now and guess that's not a big problem after all.

Regards,

I have over 350 flights on my F-15 with the same spar set up and it's just fine. My F-18 was the same way. Once you tighten up the screws...it's fine.

Beave

My SM F-15 is the same way and I pull on it pretty good too, something like 60-70 flights so far and good to go.