The roll bar angles are fabricated from one length of angle, with very little room for error to achieve the dimensions specified. No problem if you take your time with the cuts.
Two of the angles require a chamfer, which I produced on my vertical sander. …
… I tried to remember my Maths and work out the angle of which the TAN = 1/2
The arm rests need a little notch cut, so I used my Dremel …
… then finished it with a file.
I put on a thin layer of JC5A on all faying surfaces as normal.
I used the C-Frame to help keep the back-riveting as consistent and as stable as possible.
I placed protection over the skins … couldn’t face a dent!
It wasn’t too hard to jig up the skins … I just used wooden blocks.
These are important rivets I think!!!!
C-Frame worked a treat for the stiffeners as well …
… and for the nut plates.
Here is the right skin with all components riveted on prior to attachment.
NB I masked off the front and top edges of the skins where the Proseal will be applied … hopefully enabling a better key and adhesion?