RV-7A V Stab Mounting Issues

[UnPossible]

I've finally resolved my mounting issues with the horizontal stab and now have new issues with the vertical stab.

I've followed the blue print and have exactly 7-11/32" between the top of the F-718 Longeron and the top of the lower Hinge bracket.

Next I clamped the F-781 to the H Stab, using the 3/8" measurement from the bottom of the plate to the center of the holes on the HStab.

Here comes the problem. When I raise the front Spar of the V Stab up high enough to get all three rudder hinges in alignment, I do not have sufficent edge clearance for the rivets attaching F-781 to the VStab (VS-702). (If I would have waited to trim off the 5/8" indicated on the plans I wouldn't have this problem)



Additionally, the front of the bottom skin of the V Stab sits a bit (~1/4") higher than the fuselage skin. Looking at other pictures I've found on VAF, this appears a bit high.



I called Vans and their best suggestion was to order some 063 and make a longer F-781 myself..... while I can certainly do that, I thought that I'd check with the experts on VAF to see if there was a different solution that I'm missing.

Thanks again for your help and patience,
Jason

[Rick_A]

I had a similar problem and had to make a custom attach plate (F-781). The pre-drilled holes in the stock part did not give adequate edge distance on the VS.

Making the part was actually pretty easy.... once I got the 063 from Vans.

I agree that the instruction to trim 5/8's off the VS was also the source of my problem.

[Yazaman]

Cool, Im not the only one with this problem... Of course I found it at 9:15 (after Vans Help line closed for 6 hrs).

I pressed on and made my own plate as well with shop stock. Details are here...

http://www.mykitlog.com/users/displa...g=204190&row=2