Ian,

  Do you have any current pictures showing your oil cooler installation,
inlet, and ducting? What sorts of oil temps do you see and at what

ambient

temps?

Mike Wills

Ian & Irene Beadle wrote:

Mike,

Bearing in mind that my prop. at 81" X 72" is too big, at max climb starting
at 1500fpm to 7000feet the SUMP oil temp gets to 95 centigrade. [203F] T on ground
25.[77 F]  Rapidly cools after levelling. I have a thermocouple on the oulet from
the cooler but it is uncalibrated.
It reads 10 C degrees cooler than sump. [85 C  185 F]
Some pictures attached. I found that  MOST important is the SHAPE of the
duct. It must be end of trumpet shape. Ask Paul for the graph-it works.
Having extra air outlets also helps.

Finally! Kuchemann and Weber are vindicated :-) Pay attention folks.
Thanks for the confirmation Ian.

Ian sent four jpg which is a bit too much to upload. I just uploaded one of
them showing the louvers on the side of the cowl wall. 
Here are the best two of the remaining three.

Paul Lamar
 
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