Tuesday, December 23, 2008

Bending the rudder skin

Bended the rudder skin and started mounting the rudder jig. There is a lot of trimming to do on the rudder, and I need to mark all that before assembling (I'm not entirely sure if it is best to cut everything before riveting). Ordered "RTV 3145" from Aircraftspruce, probably the most expensive glue ever, 33 US$ + shipping for 4 oz (118 ml), a Christmas gift all by itself, he he. This is needed at inside the trailing edge of the rudder to prevent cracking.

Sunday, December 7, 2008

Rudder skeleton riveted

Riveted together the rudder skeleton. At first it seems like the rudder is fastened to the rod end bearings with only two rivets each, so that only six 2/16 rivets are holding the whole rudder. But when looking just a bit more closely, the rod ends are really holding the rudder with the bearings and the rod end nut squizing the plates and spar together. The six rivets are only there to keep the jam nut positioned. Nice design.

The jam nuts on the rudder seemed to be bare steel, so I primed them using the zinc chromate rattle can.