From: "Andrew Martin andrew@martinag.com.au" <flyrotary@lancaironline.net>
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Date: Sun, 24 Jun 2018 07:18:05 +0800
Message-ID: <CAJxaVD1WjL5Tuj_os+nFD-wW4JvOU6emhjYp3ZTmDkyeEQJoOg@mail.gmail.com>
Subject: Re: [FlyRotary] Re: Oil
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Yeah, my plane has been an off road racer for years now, learnt that
lesson. Other than at my local parts suppy store, blokes in there have been
told they have to fly with me, That way if they sell me crap parts their
ass is on the line also.
Actually phoned PWR on friday, they dont have charts for their coolers
either. I really dont know why its so hard to get the info needed. Just
seems like manufacturers dont flow test the products they=E2=80=99re sellin=
g
anymore. Our tractor mechanic has a hydraulic test bench, I=E2=80=99m going=
 to see
if I can use it to test cooler flows before I install next one the plane.
Its not hard, just need pressure gauges & relief valves on both sides and
flow meter between. just wanted to filter out all the crap coolers first as
it seems price has more to do with the brand stamp than effectiveness of
operation.
Stock mazda coolers seem to be worst of the worst, its a wonder anyone has
had success with them, with majority of oil returning to the oil pan
through the front cover valve, that valve should only ever operate to
protect components in case of blockage, rear iron valve is for regulating
pressure..


On Sun, 24 Jun 2018 at 6:20 am, Neil Unger 12348ung@gmail.com <
flyrotary@lancaironline.net> wrote:

> Andrew,
>
>               Forgot to tell you that these days if you go to PWR remembe=
r
> it is NOT FOR AIRCRAFT!!!  They used to be cool about it but recently the=
y
> have changed their policy.  Off road buggy seem to be OK.  Neil.
>
> On 6/23/2018 6:58 PM, Andrew Martin andrew@martinag.com.au wrote:
>
> Just got around to plumbing in mechanical gauge before cooler to see what=
s
> really happening with my oil flows, wish I=E2=80=99d done it years ago! L=
earnt so
> much in a couple of minutes on things that I have wasted so much time
> second guessing. my second attempt oil cooler did work better than the
> original mazda cooler, but was atrocious overall, Pressure drop was about
> 60psi at 1400 prop rpm. No wonder I cant cool the oil, bugger all is goin=
g
> through it, just enough to give me about 80psi oil pressure.
> Ended up bypassing cooler all together to confirm it is the cooler that i=
s
> problem not lines or anything else, well what a diference pressures
> constant at 78psi at all rpm=E2=80=99s
>
> Trouble is no cooler manufacturer here seems to have charts of flow &
> pressure drop on their coolers, very frustrating especially as prices see=
m
> to range between $100-900 for similar sizes, so makes it very hard to
> select correct one.
> Andrew
> --
> Regards Andrew Martin Martin Ag
>
>
> --
Regards Andrew Martin Martin Ag

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<div><div dir=3D"auto">Yeah, my plane has been an off road racer for years =
now, learnt that lesson. Other than at my local parts suppy store, blokes i=
n there have been told they have to fly with me, That way if they sell me c=
rap parts their ass is on the line also.</div></div><div dir=3D"auto">Actua=
lly phoned PWR on friday, they dont have charts for their coolers either. I=
 really dont know why its so hard to get the info needed. Just seems like m=
anufacturers dont flow test the products they=E2=80=99re selling anymore. O=
ur tractor mechanic has a hydraulic test bench, I=E2=80=99m going to see if=
 I can use it to test cooler flows before I install next one the plane. Its=
 not hard, just need pressure gauges &amp; relief valves on both sides and =
flow meter between. just wanted to filter out all the crap coolers first as=
 it seems price has more to do with the brand stamp than effectiveness of o=
peration.</div><div dir=3D"auto">Stock mazda coolers seem to be worst of th=
e worst, its a wonder anyone has had success with them, with majority of oi=
l returning to the oil pan through the front cover valve, that valve should=
 only ever operate to protect components in case of blockage, rear iron val=
ve is for regulating pressure..</div><div dir=3D"auto"><br></div><div><br><=
div class=3D"gmail_quote"><div dir=3D"ltr">On Sun, 24 Jun 2018 at 6:20 am, =
Neil Unger <a href=3D"mailto:12348ung@gmail.com">12348ung@gmail.com</a> &lt=
;<a href=3D"mailto:flyrotary@lancaironline.net">flyrotary@lancaironline.net=
</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:=
0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
 =20
   =20
 =20
  <div text=3D"#000000" bgcolor=3D"#FFFFFF">
    <p>Andrew,</p>
    <p>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 Forgot to tell you that these days if you go to PWR
      remember it is NOT FOR AIRCRAFT!!!=C2=A0 They used to be cool about i=
t
      but recently they have changed their policy.=C2=A0 Off road buggy see=
m
      to be OK.=C2=A0 Neil.<br>
    </p></div><div text=3D"#000000" bgcolor=3D"#FFFFFF">
    <br>
    <div class=3D"m_-3179459050143096724moz-cite-prefix">On 6/23/2018 6:58 =
PM, Andrew Martin
      <a class=3D"m_-3179459050143096724moz-txt-link-abbreviated" href=3D"m=
ailto:andrew@martinag.com.au" target=3D"_blank">andrew@martinag.com.au</a> =
wrote:<br>
    </div>
    <blockquote type=3D"cite">
      <div dir=3D"auto">Just got around to plumbing in mechanical gauge
        before cooler to see whats really happening with my oil flows,
        wish I=E2=80=99d done it years ago! Learnt so much in a couple of
        minutes on things that I have wasted so much time second
        guessing. my second attempt oil cooler did work better than the
        original mazda cooler, but was atrocious overall, Pressure drop
        was about 60psi at 1400 prop rpm. No wonder I cant cool the oil,
        bugger all is going through it, just enough to give me about
        80psi oil pressure.</div>
      <div dir=3D"auto">Ended up bypassing cooler all together to confirm
        it is the cooler that is problem not lines or anything else,
        well what a diference pressures constant at 78psi at all rpm=E2=80=
=99s</div>
      <div dir=3D"auto"><br>
      </div>
      <div dir=3D"auto">Trouble is no cooler manufacturer here seems to
        have charts of flow &amp; pressure drop on their coolers, very
        frustrating especially as prices seem to range between $100-900
        for similar sizes, so makes it very hard to select correct one.</di=
v>
      <div dir=3D"auto">Andrew</div>
      -- <br>
      <div dir=3D"ltr" class=3D"m_-3179459050143096724gmail_signature" data=
-smartmail=3D"gmail_signature">Regards
        Andrew Martin
        Martin Ag</div>
    </blockquote>
    <br>
  </div></blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_sig=
nature" data-smartmail=3D"gmail_signature">Regards
Andrew Martin
Martin Ag</div>

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