F-6118 rudder pedal brace rivets

[Moondog]

On the -7/7A plans, the F-6118 rudder pedal brace attaches to the F-601N-L firewall stiffener on the outboard side of the stiffener using AN 470 rivets. Does it matter which direction do the rivets go?

Either way, won?t these rivets create a gap between the stiffener and the firewall recess? Wouldn?t flush rivets with the flush side toward the inboard side of the stiffener allow for a better insert of the firewall recess?

 

[krw5927]

No, it doesn't matter which side of the firewall stiffener the rivet head goes on. On my 9, which I'm given to understand is (nearly) identical to the 7 fuselage, the firewall recess doesn't sit tight to the firewall stiffener on the fuselage-side of the firewall. So no need to countersink. But cleco your recess in and take a look before you rivet. If yours rests upon the stiffener, then I say feel free to countersink the stiffener for a flush rivet.

 

[bruceh]

The firewall recess doesn't sit flush with the firewall angles. There is a gap, so no worry on using non-flush rivets.

 

[Moondog]

Thank you!!