REFLECTOR: oil temp problems solved

[Douglas Holub]

I would love to see a picture of your ram air scoop, so that I don't make 
mine too big, also.

Doug Holub
----- Original Message ----- 
From: "Tom" <tomcat05 at comcast.net>
To: <reflector at tvbf.org>
Sent: Friday, April 13, 2007 8:34 AM
Subject: REFLECTOR: oil temp problems solved


> After several attempts at making the one oil cooler scenario work, I
> gave up and added a 2nd cooler-steady temps dropped from 240 to 195. I
> placed the 2nd cooler on the upper engine baffle (strongly braced). I
> made a 3" tee (45 degree) out of aluminum tubing and share the ram air
> for the induction with the duct for the new cooler. Flew plane this
> morning and the manifold pressure appears to be the same, guess the ram
> air was a bit of overkill in stock configuration. I do believe that the
> vernatherm is the main issue in causing higher temps. The extra plumbing
> intrinsic to the Velocity design increases oil pressure and at cruise
> speed keeps the vernatherm partially open. When you pull power and the
> pressure decreases you can see an immediate drop in temps. Although I
> did install a new vernatherm I've saved the old one to modify for
> testing. While I was at it, I sealed up the baffling and the CHTs
> dropped from 375 to 320. Life is good! Now I can start playing with the
> avionics (after Sun-N-Fun).
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