Paul,
I've been thinking about radiators and feel that for those who haven't

the

room
under the engine an alternative would be to build two smaller radiators

into

the
sides of the of the cowl ( flat to the side) (with appropriate baffle -

bell

shape)
with a cheek coverover the top of the each rad (attached externally -
appropriate shape).

The cheek cover would create a low presssure area - therefore help suck

out

the hot air (at the rear) this could also have the adjustable cowl flaps

set

up as well.

The idea here is to seperate the radiator air from the engine

compartment,

eliminating the back-side pressure build up which is causing so many
problems.
The back side here is open to outside air but protected by the cheek cowl
cover.
This should give more room under the cowl and keep rads away from other
things like exhaust etc.

This allows the cowl to be utilized for more than a cover - it provides

for

the
cowl to be used as part of the baffle, rad holder (with appropriate

support)

and facilitates hot air egress.

I have seen this principle used before and I believe I will go this way !
If you would like a drawing I will do one -up.
George (down under)

That will work fine. In fact some very successful liquid cooled aircraft
engine installations use that technique. The problem with two radiators is
the liquid cooled plumbing system is mission critical. A leak can cause

engine

failure. Everything you can possible do make the cooling system more

reliable

should be done. One radiator has fewer connections to go wrong than two

radiators.

It is not hard to mount one radiator under the rotary engine if the starter
is put in the right place and the motor mount is designed for that in mind.

Paul Lamar

Gotcha Paul,
Just thinking alternatives for those without the room underneath, which may
be me !

BTW been thinking about your idea of end housing (aluminium with steel
plate)
I'm surprised no one has tried it yet - got to be cheaper than a new
housing.
How does one get around "inlets" .

Use peripheral ports. No side intake ports required. PL

Also seen a new process of coatings with a surface that is almost impossible
to wear,
can't remember what it is though- found it in one of my net wonderings, I
think they
mentioned marstenite steel ? or something like that,I will look again !

4130 steel plate hardened to RC 60 or so and ground will work fine.
Best aluminum wear coating is detonation gun carbide. Expensive. PL

Can someone tell me if I can get a copy of the 13b engine building tape in
P.A.L.
instead of the N.T.S.C. that the US uses. Perhaps someone in Australia can
help here ?
Thanks
George (down under) <lendich@hypermax.net.au>

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