Jim Mederer flew up for an inspection and insisted we needed an oil cooler.
He told us the warrantee  was void unless we put one in so now we are
doing it to keep him happy. We are using a 11" by 18" by 2" Setrabe
AN -16 fittings in and out. It will be here Thursday. Cost $600.

It is no where near big enough for continuous 650 HP use but both Dan and
I believe five gallons of oil won't get very hot in 91 seconds. That is all
we need to get the record.

Most of the oil coolers I can find today are poorly designed by being
too thick and not large enough in frontal area. This includes the
Setrabe. It is like they did not read the bible of heat exchangers
"Compact Heat Exchangers" by Kays and London or let alone my book
"How to Cool Your Wankel".

 Mistrale got it right back in 2009 but I do not know their
oil cooler supplier, I wish I did.

However, we are prepared to spray a lot of water on it for evaporative
cooling effect if needed.

--------------------------------------------------------------

We bought a Setrab 11 by 18 by 2 inches thick. Not optimum by a long
shot but it is an oil cooler.

Here is what it looks like mounted under the cross counter flow
water cooling system. It will add half a gallon of oil which will
delay oil heating by 15 to 20% :-)

Paul Lamar


Paul,
Won't that location cause a problem for the water cooling?
Bill Schertz

How you doing Bill. Long time no hear from :-)
Yes it will.

But we will use the ultimate heat transfer technique.

Water to steam :-)

I wrote a book years ago on race car
brakes. I advocated spraying water on the disc.

Paul Lamar

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