Tracy

Have you made any significant mods to the inlet duct sinse posting the photos on your web site some years back, as in when you enlarged to inlet?

I’ll be on to building the ducts soon. If you were to make any mods what would they be, deep wisdom re diffuser design?

Thanks

Steve Izett


On 3/09/10 8:18 PM, "Tracy" <tracy@rotaryaviation.com> wrote:

Hi Steve,
   It's been so hot here that the cooling of the pilot has been my main problem.  I only have about 36 hours on the -8 but it is cooling OK in any weather I can tolerate. 

I posted my cooling developments here on fly rotary so they should be in the archives.  There is also a summary on my website (RV-8 page).  Also covered in issue 100 of Contact! magazine.  Last change was to inlet sizes which I had made a bit small.  Looks like 6" diameter for water and 5.5" Dia. for oil would be about right for my installation.  They are slightly smaller right now.  I played with outlet changes till I was tired of fiberglass and never made much progress.  Inlets were the key on mine but this is not always true.  It depends on a LOT of variables.   Outlet is now standard RV-8 dimensions. 

Rad is a 12 X 18 X 2.625 core Griffin,  Oil cooler is 10.5 X 11 x 2  generic 30 row cooler.

Only time cooling is limiting is during full power climb in 92+ temps.  I plan to install a water mist system on oil cooler to handle that condition.  With a 3000+ fpm ROC I can always throttle back a bit if I'm out of distilled water.

Tracy

On Fri, Sep 3, 2010 at 3:21 AM,  <stevei@carey.asn.au> wrote:

Hi Tracy

How are you going with ironing out the setup of your RV8 20B?
You’ve had a summer and I’m wondering how its going.
I chose a similar setup as far as cooling so keen to see how its going.
Can you give us your radiator dimensions and intake and exit sizes?

Thanks

Steve Izett
Building Glasair SIIRG Renesis 4 port RD!-C EC2 EM3

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