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References: <list-4923389@logan.com>
Date: Sat, 26 Mar 2011 10:41:59 -0700 (PDT)
From: Kelly Troyer <keltro@att.net>
Subject: Hose Sizes for Oil System
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-4923389@logan.com>
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=0A=0A=0A________________________________=0AFrom: "Lehanover@aol.com" <Leha=
nover@aol.com>=0ATo: Rotary motors in aircraft <flyrotary@lancaironline.net=
>=0ASent: Sat, March 26, 2011 10:41:28 AM=0ASubject: [FlyRotary] Re: Hose S=
izes for Oil System=0A=0AIn a message dated 3/26/2011 10:40:39 A.M. Eastern=
 Daylight Time, keltro@att.net =0Awrites:=0ALynn,=0A>=A0=A0=A0I am plumbing=
 oil system and need your opinion on hose sizes...............I =0A>am tryi=
ng to reduce=0A>restriction as much as possible=A0from engine to external=
=A0filter ("WIX" HP6 =0A>equivalent),oil cooler=0A>and return to engine....=
......I=A0will have external oil pressure adjustment =0A>("AVIAID" filter m=
ount with=0A>regulator for return to sump)...........I know most of the fly=
ing group are =0A>using AN-10 (a few=A0AN-8)=0A>but I am leaning to AN-12..=
............Overkill perhaps (HP6 flows up to 22 =0A>gal/min) but weighs le=
ss=0A>than two HP1 + filter mount............I want to reduce pump heating =
of oil as =0A>much as possible and=A0=0A>reduce hose=A0restriction losses b=
y returning regulator bypass oil directly to =0A>sump with out passing =0A>=
=0A>through the oil cooler and hose to it...........What say you...........=
..=0A>=0A>Best Regards,=0A>(Wish I could attend Sun-N-Fun)=A0=0A>=A0=0A>Kel=
ly Troyer=0A>"DYKE DELTA JD2" (Eventually)=0ADash 10 is plenty big and a bi=
t lighter, and a bit less expensive. No pipe =0Athreads into cast iron othe=
r than a dash 4 for oil pressure. Use boss fittings =0Athat seal with an "O=
" ring. So no cracked castings. Back up all fittings when =0Aconnecting hos=
es. That means hold the fitting with a wench and a second wrench =0Aon the =
"B" nut. Then squeeze the wrenches together with one hand to tighten or =0A=
loosen a connection.=A0Support each hose close to its connection, so as to =
keep =0Apushing and pulling to the long run of hose and not stress the fitt=
ings. No =0Abraided hoses can touch anything but a padded clamp. It can saw=
 through another =0Ahose or anything it touches Both braided hose and Kevla=
r hose are conductive and =0Aif you fail a ground strap will carry your sta=
rter current just as well, with =0Avery bad outcomes.=A0=0A=0ANo 90 degree =
fittings. If you need a bend close to a fitting use a sweep 90 Hose =0Aend =
and a straight fitting. Observe minimum hose bend radius. =0A=0A=0AYou want=
 to be sure the filter has a bypass function in case of=A0an element =0Acol=
lapse or excessive debris collection. =0A=0A=0AAt 6,000 RPM probably 14 GPM=
 is adequate. I would control the pressure after =0Aeverything including th=
e cooler(s) since it is the pressure that makes the heat, =0Aand I would no=
t pass up a chance to run oil through a cooler. If possible route =0Areturn=
 oil into the pan at the lowest point available. This will mix in a lot =0A=
less air into the sump oil. I install stock regulators with the outlets sid=
eways =0Arather than down for that reason. Keep the return pipe at dash 10 =
to keep =0Avelocity low into the pan. Stay well away from the pickup.=0A=0A=
Racing beat says everything up to the 93-95 twin turbo ran 71.1 PSI, then t=
he 93 =0Aup runs 110 PSI. =0A=0A=0AWe raced on 85 PSI and the store bought =
engines (Drummond) run 100 PSI (non =0Aturbo)=0A=0ALynn E. Hanover=0A=0A=0A=
________________________________=0A=0A=A0=0AThanks Lynn...........Good info=
 about running all flow through cooler before =0Asending regulator bypass b=
ack to sump..............=0A=A0=0AThanks Again,=0A=A0=0AKelly Troyer
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<html><head><style type=3D"text/css"><!-- DIV {margin:0px;} --></style></he=
ad><body><div style=3D"font-family:arial, helvetica, sans-serif;font-size:1=
4pt"><DIV>&nbsp;</DIV>=0A<DIV style=3D"FONT-FAMILY: arial, helvetica, sans-=
serif; FONT-SIZE: 14pt">=0A<DIV style=3D"FONT-FAMILY: times new roman, new =
york, times, serif; FONT-SIZE: 12pt"><FONT size=3D2 face=3DTahoma>=0A<HR SI=
ZE=3D1>=0A<B><SPAN style=3D"FONT-WEIGHT: bold">From:</SPAN></B> "Lehanover@=
aol.com" &lt;Lehanover@aol.com&gt;<BR><B><SPAN style=3D"FONT-WEIGHT: bold">=
To:</SPAN></B> Rotary motors in aircraft &lt;flyrotary@lancaironline.net&gt=
;<BR><B><SPAN style=3D"FONT-WEIGHT: bold">Sent:</SPAN></B> Sat, March 26, 2=
011 10:41:28 AM<BR><B><SPAN style=3D"FONT-WEIGHT: bold">Subject:</SPAN></B>=
 [FlyRotary] Re: Hose Sizes for Oil System<BR></FONT><BR><FONT id=3Drole_do=
cument color=3D#000000 size=3D2 face=3DArial>=0A<DIV>=0A<DIV>In a message d=
ated 3/26/2011 10:40:39 A.M. Eastern Daylight Time, keltro@att.net writes:<=
/DIV>=0A<BLOCKQUOTE style=3D"BORDER-LEFT: blue 2px solid; PADDING-LEFT: 5px=
; MARGIN-LEFT: 5px"><FONT style=3D"BACKGROUND-COLOR: transparent" color=3D#=
000000 size=3D2 face=3DArial>=0A<DIV>Lynn,</DIV>=0A<DIV>&nbsp;&nbsp;&nbsp;I=
 am plumbing oil system and need your opinion on hose sizes...............I=
 am trying to reduce</DIV>=0A<DIV>restriction as much as possible&nbsp;from=
 engine to external&nbsp;filter ("WIX" HP6 equivalent),oil cooler</DIV>=0A<=
DIV>and return to engine..........I&nbsp;will have external oil pressure ad=
justment ("AVIAID" filter mount with</DIV>=0A<DIV>regulator for return to s=
ump)...........I know most of the flying group are using AN-10 (a few&nbsp;=
AN-8)</DIV>=0A<DIV>but I am leaning to AN-12..............Overkill perhaps =
(HP6 flows up to 22 gal/min) but weighs less</DIV>=0A<DIV>than two HP1 + fi=
lter mount............I want to reduce pump heating of oil as much as possi=
ble and&nbsp;</DIV>=0A<DIV>reduce hose&nbsp;restriction losses by returning=
 regulator bypass oil directly to sump with out passing </DIV>=0A<DIV>throu=
gh the oil cooler and hose to it...........What say you.............</DIV>=
=0A<DIV>&nbsp;</DIV>=0A<DIV>Best Regards,</DIV>=0A<DIV>(Wish I could attend=
 Sun-N-Fun)&nbsp;<BR>&nbsp;</DIV>=0A<P>Kelly Troyer<BR><STRONG><FONT size=
=3D4>"DYKE DELTA JD2"</FONT> <FONT size=3D1>(Eventually)</FONT></STRONG></P=
></FONT></BLOCKQUOTE></DIV>=0A<DIV></DIV>=0A<DIV>Dash 10 is plenty big and =
a bit lighter, and a bit less expensive. No pipe threads into cast iron oth=
er than a dash 4 for oil pressure. Use boss fittings that seal with an "O" =
ring. So no cracked castings. Back up all fittings when connecting hoses. T=
hat means hold the fitting with a wench and a second wrench on the "B" nut.=
 Then squeeze the wrenches together with one hand to tighten or loosen a co=
nnection.&nbsp;Support each hose close to its connection, so as to keep pus=
hing and pulling to the long run of hose and not stress the fittings. No br=
aided hoses can touch anything but a padded clamp. It can saw through anoth=
er hose or anything it touches Both braided hose and Kevlar hose are conduc=
tive and if you fail a ground strap will carry your starter current just as=
 well, with very bad outcomes.&nbsp;</DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV>No 90=
 degree fittings. If you need a bend close to a fitting use a sweep 90 Hose=
 end and a straight fitting. Observe minimum hose bend radius. </DIV>=0A<DI=
V>&nbsp;</DIV>=0A<DIV>You want to be sure the filter has a bypass function =
in case of&nbsp;an element collapse or excessive debris collection. </DIV>=
=0A<DIV>&nbsp;</DIV>=0A<DIV>At 6,000 RPM probably 14 GPM is adequate. I wou=
ld control the pressure after everything including the cooler(s) since it i=
s the pressure that makes the heat, and I would not pass up a chance to run=
 oil through a cooler. If possible route return oil into the pan at the low=
est point available. This will mix in a lot less air into the sump oil. I i=
nstall stock regulators with the outlets sideways rather than down for that=
 reason. Keep the return pipe at dash 10 to keep velocity low into the pan.=
 Stay well away from the pickup.</DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV>Racing be=
at says everything up to the 93-95 twin turbo ran 71.1 PSI, then the 93 up =
runs 110 PSI. </DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV>We raced on 85 PSI and the =
store bought engines (Drummond) run 100 PSI (non turbo)</DIV>=0A<DIV>&nbsp;=
</DIV>=0A<DIV>Lynn E. Hanover</DIV>=0A<DIV>&nbsp;</DIV>=0A<DIV>=0A<HR>=0A</=
DIV></FONT></DIV></DIV>=0A<P><FONT size=3D2></FONT>&nbsp;</P>=0A<P><FONT si=
ze=3D2>Thanks Lynn...........Good info about running all flow through coole=
r before sending regulator bypass back to sump..............</FONT></P>=0A<=
P><FONT size=3D2></FONT>&nbsp;</P>=0A<P><FONT size=3D2>Thanks Again,</FONT>=
</P>=0A<P>&nbsp;</P>=0A<P><FONT size=3D2>Kelly Troyer</FONT></P></div></bod=
y></html>
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