Paul,
I've been looking for anti-collapse hose for my radiator return, but have
been unable.
my solution is to insert aluminum flex hose inside my radiator return hose.
it's 1/8 inch smaller than the inside diameter of my radiator hose.
I'll make sure the ends do not chaff the inside of the radiator hose.

http://www.mcmaster.com/#54995k17/=2jag5g

Do you see any potential pitfalls here?

Brian Trubee

That looks like a better solution  than the corrugated stuff Chuck Dunlap
used. Smoother inside.


Paul Lamar


Hey - that looks exactly like what I was wishing for on our install as well..

We (like Chuck I suspect) are using the corrugated rubber hose lines in
order to get a 90-degree curve.  I have always thought the corrugated hose
is not doing good things for coolant flow.  Our attempts to use the silicon
hose have always failed because it collapses in the bend.  I'll be very
interested to hear how well this works.

How do you plan on eliminating end chafing?

Mark (Rocky Mtn High)


As an aside, it's possible to buy silicone rubber hose elbows (90 deg
plus other amounts of curve)..

https://www.polyperformance.com/shop/Samco-p-1-c-1663.html


Matt-

Brian has added a false bottom to the RV4 much like a P47 and mounted
the rads back almost as far as the P51. It will look much like a P51
from the side when he gets it done. He has gotten so good with the
english wheel making aluminum cowls the Me262 project has hired him to
make parts.

Paul Lamar


I plan to smooth the edge of the cut ends of the  aluminum hose,
and then roll the edges back enough so that they cannot contact
the inside of the silicon hose in which it will reside. I
considered a bit of silicon rescue tape on the ends, but it
wouldn't be good if they came off and lodged somewhere in my
coolant system.

I've got to correct Paul here- the ME 262 project didn't hire me,
I worked for free when I made the landing gear doors for the ME 262s.
Those parts are made from 1" thick baltic birch plywood and
lightened by routing out a bunch of the material. There wasn't
a 90 degree angle on those doors- they were all compound angles.
I couldn't say no to an opportunity to do a little work on that project.

As far as my skills on the english wheel go- I'm still learning, the
present cowl will probably fly on the plane, but I'd like to make
another sometime in the near future.

Brian Trubee