The brackets of the right tank didn’t lean on the main spar for the top holes, this needed some shims to fill the gap. This gap is a result of the other issues I had with the main spar.
Between the main spar and bracket 1 is a space of about 2.6 mm:
Bracket 2 has a space of about 2.1 mm:
To find the exact thickness of the spacers a mixed some 2K putty between plastic and let it set:
I removed the tank after the putty had cured:
Measuring the thickness:
I created some shims from T2024-T4 aluminium.
Shim under bracket 4:
Shim under bracket 3:
Shim under bracket 2:
Shim under bracket 1:
Inside view:
Todo:
Due to the thickness of the spacers the bolts of bracket 1 and 2 of the top holes are too short. I ordered some longer bolts from ACS.