29-15 Arm Rests, Center Section Channels & Roll Bar Angles

Roll Bar Angles

Clamping the F-01460-L Intercostals in the vice provided a stable way to set the -4 rivets with the squeezer.


IMG 2903

Squeezed the F-01405D-L Bulkhead Side Channel/Roll Bar Angle rivets as well.


Center Section Channels

IMG 2906

My pneumatic pop rivet gun made short work of riveting the Center Section Channels.


IMG 2907

Several of the LP4-3 rivets needed the little wedge because of access.

I taped areas to try & protect the paintwork.


Arm Rests

IMG 2912

A piece of thin plastic sheet worked well to protect the paint when setting the arm rest internal rivets with a long set.

There wasn’t room to use the long set for the F-01491-L Fuselage Side Rib, F-01458-L Side Frame and F-01422-L Fuselage Side Rib rivets, but actually a normal set on the gun worked just fine.


IMG 2908

I used the wedge again for the front internal arm rest pop rivets.


Torquing

Once all the rivets had been set down near the Lower Drag Fittings, I decided to torque the nuts.

I used an extension and universal joint to get access onto the outboard nuts. Without it here wasn’t room to manipulate my torque wrench up against the side skin.

I was surprised how much resting torque it needed to turn the AN365-624A nuts, as much as 60 in/lbs. AN6 nuts need 160-190 in/lbs, so I torqued to 230 in/lbs.

IMG 2900

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