The instructions for the EXP119 engine install have some updates for the fuselage build. I am trying to incorporate the changes as I build the Fus, but have some questions on the nutplates that hold the cooling flap assembly in place. Page 2 diagram 3A shows five nutplates to be added (each side). The instructions indicate you should countersink for #3 rivets to hold the nutplates (K1000-8). Eventually panhead screws are used to hold the cooling flap assembly. To me it looks like these updates are more modes for post construction, then replacements for during the Fus Build. How many builders even knew of these before building the Fus?
Questions:
1) As I'm incorporating the change in with the build, I plan on dimpling this skin instead of countersinking, and using dimpled nutplates. Any concerns?
2) Should I consider using flathead screws to hold the cooling flap assembly, instead of the panhead screws called out in the instructions? This would entail using K1100 nutplates, probably #6 instead of the #8 called out in the plans. I could add 6 per a side if reducing the screw size. This would be similar to the inspection plates in the back of the Emp. See below.
Questions:
1) As I'm incorporating the change in with the build, I plan on dimpling this skin instead of countersinking, and using dimpled nutplates. Any concerns?
2) Should I consider using flathead screws to hold the cooling flap assembly, instead of the panhead screws called out in the instructions? This would entail using K1100 nutplates, probably #6 instead of the #8 called out in the plans. I could add 6 per a side if reducing the screw size. This would be similar to the inspection plates in the back of the Emp. See below.
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