A few  years ago we made some Wiggins couplings for water plumbing.
These are  widely used in airliners and military aircraft as well as
Formula 1
race  cars. They are highly reliable, long lasting  and quick to take
apart.
They must be tig welded to aluminum tube. If you buy the race car versions
they are about $100 each. We simplified them by doing away with the outer
trick clamp and used a mundane hose clamp instead. We also standardize on
1.5
inch OD aluminum tubing for water plumbing. That would be the only  size we
would make.

We are thinking of making another batch but we  would need to make at least
50
sets. Is anybody interesting in buying some  of these? My guess is they
would
be half the price or about $50 a  set.

Paul Lamar

I will buy 4-6.
I bought some the last time and they were very nice!!
Don

Thanks Don.

What is your UPS shipping address for the rotor housings?

Paul Lamar