Rivetting of flap and aileron upper surfaces
The flaps and ailerons were temporarily bolted in place as per the finishing manual, except for the use of regular AN4 nuts. These surfaces were positioned with clamps imposing the appropriate degree of washout. The correct degree of washout at the junction of the aileron was achieved with the aid of a laser level. The upper surfaces of the flaps and ailerons were rivetted.
The right hand aileron had issues. Excess distortion occurred when the upper skin holes were matched to to the innermost rib. Things returned to normal only if a ~0.8mm hole mismatch was accepted. Upsizing was indicated but I did not want to upsize the upper skin rivets. Instead I removed this rib, hole matched to the upper skin, then upsized and recentered the bottom skin holes to 4mm. This rib was a revision 0. The left hand aileron skin was revision 1 and did not have this issue. This latter aileron skin was a replacement for the original, incorrect, skin supplied in the kit.
Use of a laser level, with the elevation at each end of the wing carefully adjusted - here demonstrated after rivetting completed
Same, in darkness
Innermost RH aileron rib bottom holes resized to 4mm
Clecoed in place
Bottom 4mm rivets in place
Top side 3.2mm rivets
RH flap clecoed
Duralac green used here, as usual
RH flap completed, only leading edge rivets remain
LH aileron finished, except for leading edge. LH flap in progress
Another view
RH flap and ailerons complete, except for leading edge
Author
This post is from Adam Dickson
