Tank building

[mbetti]

I am getting ready to build the tanks for my RV7. I was wondering if there are any issues with rivet length called out. With the proseal sandwiched in there, is there a need for a longer rivet through the skins? A past builder mentioned that he thought his were short.
Mike

[KayS]

no problem with rivet length as long as the parts are tight clamped/clecoed. if you feel that longer ones are necessary just use the next length.

[bkthomps]

Originally Posted by KayS

if you feel that longer ones are necessary just use the next length.

after double checking you are doing it right

I didn't have to use any longer rivets on my tanks, I did need extras of the blind rivets on the zbrackets

[DanH]

The industry literature says sealant thickness will be .001" to .003 between fay surfaces at the rivet when rivets are driven wet.

[smiller]

I'm mostly done with one tank and so far no issues with rivet lengths not matching what the plans call out.

I used fuel tank dimple dies (very slightly deeper than standard 3/32 dimple dies) to allow room for sealant.