Rear pivot welding and frame assembly

I cut the rear frame as marked and welded the rear pivot plate.  The plate distorted.  The front pivot plate had also distorted when welded before.  The result was that the rod-end bearings did not align properly and would not turn when tightened.  I realigned the front plate by tightening some nuts on a threaded rod passed through the holes.  I bent the rear plate in a vise until the alignment was perfect.

I am very pleased with the assembled frame - the front boom is still very long, I will cut this when I am happy with the reach to the pedals.  There are many things still to do - seat mount next.  I have a carbon fibre seat from Germany.