Today I worked on the fitment of the sub structure of the fuselage side skins.
Several machine countersinks for a couple large nutplates and the fwd end of the roll bar attach plates.
Fuel tank attach plates fitted.
Cutting the seat back adjustment spacers apart.
And the seat back adjust guide plates.
Funny, I never used these on the RV-7. I even removed the parts from the back of the seat backs that slide into these slots.
Countersunk all the rivet holes in these two bulkhead cover/joining plates. They are not symetrical, the holes at the very top on each side of the bolt hole are different. Make two mirror images!
Cutting the armrest brackets appart.
Dimpled the top flange of the armrest middle support.
Cleco'ed this middle support into place.
Removing the unwanted bit from the middle of the armrest.
Cleco'ed the armrest into place.
Installed the fwd armrest vertical support and then match drilled the armrest to it.
Matchdrilled the aft end of the armrest to the center bulkhead covers.
Fitted the brackets that are for the spar pin locking point. I think that is what they are for????
Dimpled the cockpit side rails. Some holes toward the aft end don't get dimpled.
Had to switch yokes to be able to dimple these holes that are so close to the inside of the part and the bottom flange. Without this modified yoke, this would have been impossible. Don't be afraid to modify your yokes within reason. Taking away too much material will result in flexing or breakage of the yoke.
Finally, I machine countersunk all the holes in the longerons that receive the dimples in the cockpit side rails. Current advice is to only go 0.007" deeper than flush on these. The old way of going deep enough to receive the entire dimple has been retracted and is no longer advised.
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