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Dave,
Do you have photo(s) of your oil cooler and how air is ducted to it? Ed's
initial problem was a duct that blasted most air thru one end of long cooler
and rest wasn't getting its "share" of air.
I'm thinking "duct" is more important than "Setrab" or "Mazda" or "A/C
core".
David
----- Original Message ----- From: <daveleonard@cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, September 12, 2004 11:58 AM
Subject: [FlyRotary] Re: high oil pressure and coolers
Well, to be honest guys, the stock oil cooler does not work that well.
Most who use it, including Tracy and Ed, have dealt with significant
problems trying to cool their oil. Both guys had to cut their first flights
short because of high oil temps, and both eventually had to do significant
tweaking of the oil cooling system.
My setrab by comparison has cooled very well from first flight. The
highest my oil temp has ever been was 192, and that was on an extended
climbout at 32"MAP and 90 KTS - coolant finally overheated. In cruise my
oil temps run between 140 and 160.
The Setrab also fit better under the cowl, is readily available and comes
with any size AN or NPT or Metric fitting you want to use. They cost 2-3
hundred bucks - not cheap but not super expensive.
The "big book" is not a stone tablet. Thank goodness for Tracy and Ed.
Without them I could never have considered doing this project. But don't
forget that the "big book" also says to use a 2.17:1 plenary drive with 4
planets ;-)
So stop picking on Rusty. What with the PTSD from that whole BUC
experience and a hurricane headed his way dosen't he have enough problems?
Dave Leonard - Did a fly over at sevenstock yesterday, turned out great.
That is a great event for a rotor head. Got to hear the 4 rotor leManz
(sp?) winner running as well as several other race cars.
> Bill Dube wrote:
>
> >
> > The "big book" says to use the stock oil Mazda cooler. It does
> > not appear to be overly heavy or bulky. It has been proven to work.
> > What would be the motivation to use something different? Maybe I've
> > missed some important point.
>
> Yes you have. The important point is that Rusty likes to do it the hard
> way :)
> I think that he firmly believes that "experimental" needs to be followed
> to the letter. Why benefit from other's results when you can do the
> experiment yourself :)
>
> Finn (too lazy to experiment, unless I can spend $100 to save $10)
>
>
> >> Homepage: http://www.flyrotary.com/
> >> Archive: http://lancaironline.net/lists/flyrotary/List.html
>
>> Homepage: http://www.flyrotary.com/
>> Archive: http://lancaironline.net/lists/flyrotary/List.html
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