re: 82 diesel westy

I thought i had figured this out by finding the lug bolts were a little
loose on the right rear. But...its intermittent.  drove 30-40 miles
yesterday...no noise, drove last night
noise the whole time.

i first thought it was a scraping, but maybe its a knocking noise.
occurs at the same rate of speed as the wheel rotation., sounds like its
coming from the right rear wheel.

only on accelleration or slowing down.

goes away, while coasting out of gear, or engaging the clutch.

not affected by engaging brakes or emergency brake while coasting or
driving
in gear.

seems like if it were the cv joint it would be a constant noise ?

as suggested ,, tried driving in full tight circles, both left and
right., doesnt make noise.

any suggestions ?