Structural pan heads. You'll never notice the cosmetics vs C/S after completion. Just put a screw every place there was a rivet.
This is what I did.
__________________
RV8
Empennage Passed Pre-close Inspection
Wings mostly done
Fuselage assembly, it's a riveting job!
83126
Dash 8 day job is financing the RV8
Donation till September 2023
Structural pan heads. You'll never notice the cosmetics vs C/S after completion. Just put a screw every place there was a rivet.
+2. Thats what I would do too. Stick with 0.040" and use pan heads.
__________________
Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet" Flying since Sept. 2009
Hobbs 725
also
1/4 share in 1959 C-182B (tow plane)
LS6-15/18W sailplane SOLD
bought my old LS6-A back!!
VAF donation Dec 2022
Structural pan heads. You'll never notice the cosmetics vs C/S after completion. Just put a screw every place there was a rivet.
Quote:
Originally Posted by David Z
This is what I did.
Quote:
Originally Posted by scsmith
+2. Thats what I would do too. Stick with 0.040" and use pan heads.
Thanks guys. I'm using AN515-8R8's right now and I'm not crazy about the look. If I can't change my mind on that point, do you think there's any structural concerns going with a thicker cover plate with countersunk screw holes and using a screw like an AN509?
__________________
Ben Ellis
RV-8 build in progress Build Log
Thanks guys. I'm using AN515-8R8's right now and I'm not crazy about the look. If I can't change my mind on that point, do you think there's any structural concerns going with a thicker cover plate with countersunk screw holes and using a screw like an AN509?
Double check if 0.063" is thick enough to countersink for #8 before you go to the trouble. If it is, then structurally it is fine. Just heavier with that thick plate.
__________________
Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet" Flying since Sept. 2009
Hobbs 725
also
1/4 share in 1959 C-182B (tow plane)
LS6-15/18W sailplane SOLD
bought my old LS6-A back!!
VAF donation Dec 2022
A plate thick enough to accept a #8 screw countersink would also have an unusual appearance to it. IIRC, the head height for that screw is 0.072", so it would become a very thick plate, 0.080 or more.
__________________
RV8
Empennage Passed Pre-close Inspection
Wings mostly done
Fuselage assembly, it's a riveting job!
83126
Dash 8 day job is financing the RV8
Donation till September 2023
Double check if 0.063" is thick enough to countersink for #8 before you go to the trouble. If it is, then structurally it is fine. Just heavier with that thick plate.
Do you recall where you can find the chart for minimum thickness for each screw type? I looked through my books and couldn't find anything other than a recommendation to go no deeper than 2/3rds of the sheet thickness and to leave a minimum of 0.02" beneath the countersink.
__________________
Ben Ellis
RV-8 build in progress Build Log
Do you recall where you can find the chart for minimum thickness for each screw type? I looked through my books and couldn't find anything other than a recommendation to go no deeper than 2/3rds of the sheet thickness and to leave a minimum of 0.02" beneath the countersink.
I just measured an AN509-832 and the head is about 0.077 tall.
__________________
Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet" Flying since Sept. 2009
Hobbs 725
also
1/4 share in 1959 C-182B (tow plane)
LS6-15/18W sailplane SOLD
bought my old LS6-A back!!
VAF donation Dec 2022
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