Attaching Tailplane 11-05 to 06

Quite enjoyable this part, since you can convince yourself that you’ve nearly built an aeroplane. Hmmm … : )

The front attach holes have already been drilled ages ago in a previous step, but happily they fitted perfectly thanks to the accuracy of Vans’ parts.

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Match Drilling

 

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The rear spar is initially located on the fuselage attachment ears with two clecos. Then you have to match drill up from #30 to 1/4″. I decided to step the holes up gradually, since there is a lot of metal to drill through, especially the bottom two since they pass through an angle piece as well. I clamped the F-01411 “Ears” to prevent the drill pushing their tops away from the spar. Of course there is the usual note about “be sure to drill holes perpendicularly”. So I used the small set square attached to the rear spar with double-sided tape to help in one plane, and placed a block of wood behind for a helper to judge the other plane. As previously discussed in Horn Drilling 11-03 & 04 I match drilled 6.2mm, then used a 6.3mm reamer to better fit the AN4 bolts. I’m very pleased with the result, each bolt fitting as snug as a snug thing only snuggier!


Bottom Holes

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The bottom holes were awkard to access, due to the stern post bulkhead. No problem if you plan to match drill 1/4″ and you have a 12″ length drill bit. But as I wanted to ream the holes, I ended up buying a chuck extender.


Firmly attached!

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