Jeff Spitzer wrote:

  Is this strong enough to hold the joint together  when pressurized? 
(Remember that this clamp must keep the pipes from  separating axially)

snips...

Thanks for catching that Jeff. Was a typo on my part when
I scaled the detail.

Yes on bending the tabs.

Well the pipe area is about 1.3 square inches so at 50 PSI the
the load is 65 pounds. Shear stress on .032 five inches long is
about 400 psi. Yes I think the aluminum can handle that.
The bending load is indeterminate :-) We considered .025 inch thick
SS but it is harder to hydro jet.

BTW don't forget to hang 65 pounds off your hoses, hose
barbs and worm clamps :-)

Paul Lamar

Jeff beat me to the question:  i.e. strength of the coupling clamp?

The next question is;  What " pressure" should the cooling system be:
  a.)  designed for?
  b.)   proof tested at?

I recall from Tracy's notes that he uses a pressure cap of about 26 PSIG  

  > to get an internal operating pressure of about 16 PSIA (at altitude).

Therefore, a 50 PSIG test (200%) may be sufficient for proof tests, 
but the design pressure should be greater than that.

Regards,

Keith Moore

You will probably start blowing things in the engine if you go much 
higher than 50 psi. 

The clamp should hold 100 times the load, 6500 pounds
or 40,000 psi shear stress in the aluminum for a straight pull on the pipes.

Off axis... things are going to tend to straighten out at these kinds of
loads. There is a bending load on the tabs but the moment arm is
about .040 so I will leave the calculations of the bending
stress to the readers. Start by assuming all 65 pound load is 
taken by one tab.

Paul Lamar
 
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