as a follow-up, i did cut up an s10 upright to press the spindle out of, and my trailer project has begun
started with a freebie pop-up camper with a family of mice in it, stripped it all down to bare frame, and made a "subframe" which the entire suspension assembly bolts to, which in turn bolts to the frame of the pop-up.
well, here are the plans
suspension started with cutting/pressing out the dead spindles from a junkyard chevy s10.
then i turned some 'adapter sleeves' to press the spindles into, and then 'adapt' to a more convenient OD to slip into a standard tube.
and then welded up a subframe and control arms
and look, assemblage
aand now it rolls on its own wheels
need to turn some spacers and then i can bolt on the shocks, leftovers from a previous project
and then i can start the woodwork.