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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-407916@logan.com>
Subject: Re: [FlyRotary] Re: high oil pressure and coolers
Date: Sun, 12 Sep 2004 20:11:30 -0400
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Yeah! Dave those are fighting words. {:>).

 Actually, I started out with a non-Mazda oil cooler which did not do the
job which relates to all the tales of Woe about my oil cooling.  I then
switched to the Stock Mazda oil cooler and put it up under the spinner and
have had fine cooling ever since.  Not to say there are not equal or better
coolers out there, but the performance of my oil cooler with a 22 sq inch
inlet opening has worked fine for my power output.  I think that moving the
position of the cooler from near the firewall where its exit flow was
hindered up under the spinner was probably what really did the job.

Ed
.
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message ----- 
From: "David Carter" <dcarter@datarecall.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, September 12, 2004 7:51 PM
Subject: [FlyRotary] Re: high oil pressure and coolers


> 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
> >
>
>
>
> >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html