From: "Andrew Martin andrew@martinag.com.au" <flyrotary@lancaironline.net>
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Date: Sat, 23 Jun 2018 16:58:54 +0800
Message-ID: <CAJxaVD2fsAq0FR18prpwdAqOfQPTuf+VyyGYMwiRF-HXCyHyFA@mail.gmail.com>
Subject: Oil
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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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! Lea=
rnt 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.
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

Trouble is no cooler manufacturer here seems to have charts of flow &
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.
Andrew
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Regards Andrew Martin Martin Ag

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<div dir=3D"auto">Just got around to plumbing in mechanical gauge before co=
oler 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, bugge=
r 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 i=
t is the cooler that is problem not lines or anything else, well what a dif=
erence pressures constant at 78psi at all rpm=E2=80=99s</div><div dir=3D"au=
to"><br></div><div dir=3D"auto">Trouble is no cooler manufacturer here seem=
s to have charts of flow &amp; pressure drop on their coolers, very frustra=
ting especially as prices seem to range between $100-900 for similar sizes,=
 so makes it very hard to select correct one.</div><div dir=3D"auto">Andrew=
</div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D"g=
mail_signature">Regards
Andrew Martin
Martin Ag</div>

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