Brian,

What kind of hose did you plumb the radiator with? Where did you
get it?

Joe Berki
Limo EZ


I used silicone (silicon?) hose from Mcmaster Carr. It likes to kink
if you try to put too much of a bend in it, so using an
anti-collapse spring or aluminum flex tube inside it to prevent a
kink is a good idea if you have any small radius bends in it.

Brian Trubee

I mentioned this hose and special clamps in my book "How to Cool
Your Wankel."

We have a Christmas special for $30 cash green backs direct U.S. only.
Plus $5 cash for mailing in the U.S. No checks no CC's no money
orders. Overseas $15 mailing. Extra paper work involved. 1/10th of
an oz Krugerrand gold  coins accepted for an order of four books  :)

This month only.

Paul Lamar



Do you have a book titled" How to Keep your Wankel Warm"? Because
I climbed up to fly the pattern around 2500 feet above the field and my
oil and coolant temps never got above 135 degrees f. It was about 50
degrees out at the time.

If you did, I'm sure that someone would find the title too suggestive.

Brian Trubee


I am having enough trouble with the title as it is.
The EAA book store does not like it. AC Spruce has no problem
with the title.

You need cowl flaps Brian. You are the first rotary engine
aircraft builder that has complained about your cooling
working TOO WELL in the entire 12 year history of the Newsletter :)

That indicates to me we have made tremendous progress on
rotary engine cooling system design as 12 years ago it was common
for rotary engine builders to give up because of cooling problems.
Even Dave Garber, probably one of the first rotary engine builders
back in the early 1970's, emailed me in the late 90's and
asked my advice on cooling system design.

Now remember, for every one degree F reduction in the outside air
temperature your cooling system will work one percent better.
In other words at this outside air temp your cooling system is
50% better than it needs to be.

Just wait until 100 F summer arrives :)

In the mean time add cowl flaps as closing them will reduced the
aero drag when you don't need all that cooling. Cowl flaps are more
important on liquid cooled engines because of the liquid cooled engine's
one degree rule.

The same rule does not apply to air cooled engines.

Paul Lamar

I'm working on a design for the cowl flap. It's a simple panel hinged at
the front, but I'm trying to work out a simple way to actuate it in
flight. Maybe a small linear actuator.
Brian Trubee


Brian
I will be very intersted in any design you may come up with for actuating
your cowl flaps.

Bob Izett, Western Aust.

I use one RAC electric trim servo (T2-7A) with a position indicator on the
istrument panel.  It works fine and I know the exact position of the flaps.

Rino Lacombe
Renesis powered Glass Goose