"wright1902glider" wrote

Once I get the holes drilled in the bike frame accurately, I should be
able to clamp one of the EMT tubes to the frame and just drill through
the holes. Then, clamp the second EMT tube to the other side and drill
through the entire works. It doesnt have to be perfect, just good
enough not to spot from 5 feet away. The EMT is pretty forgiving and I
can tweek it into alignment with a B. A. H. if necessary.

Just make sure you put a wooden plug or something in the EMT where the bolts
go through. If you don't, they will crush when you attempt to tighten the
bolts. Don't ask me how I know that!

You could use a dowel rod, or turn a plug, using a drill press, bolt for
arbor, and a rasp.
--
Jim in NC