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Strasnuts
Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT
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 Posted: Mon Mar 25, 2013 8:46 pm Post subject: Oil Temps |
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I believe nonstop aviation makes the oil cooler butterfly valves. I have one and it works great. Very easy to adjust by using a control knob with detents. Vans sells them. Glad to hear you fixed the issue. My #5 is the hottest.
Sent from my iPhone
On Mar 25, 2013, at 22:23, Deems Davis <deemsdavis(at)cox.net (deemsdavis(at)cox.net)> wrote:
[quote]This winter I figured out a way to fix 2 Heat related issues that have been with me since day one. 1. My # 6 cylinder ran 20-30 degrees hotter than any of the other. On hot (AZ) summer day's, I had to pay close attention to keep the Cyl temp under 420-430 deg on climbs. 2. my oil temps would also exceed 220 on long climbs to altitude and during the middle of summer if the OAT didn't get below 70F degs, the Oil Temp would stay above 200. Even on 'cooler days' it would rarely go below 196. So I fabricated a fiberglass intake that replaces to the slot cover in the lower cowl in front of the nose gear. and plumbed it to the Oil Cooler (in the same std location). I plugged the old 4" opening behind the # 6 cyl. The results after a couple of flights look encouraging. The #6 cyl, is now in line with the other cyls. (12 deg spread across all cyls). Last weekon a trip from DVT to SLC, in cruise the oil temp never got above 165 degrees. the OAT (at) 10-11k was 0 to -4 C.
So I'm a bit worried that the oil temps are now too cool. I've been of the opinion that the ideal oil temp is aprox 180 deg in order to cook off any moisture in the oil. So I'm wondering if I need to put a valve in-line somewhere to help regulate the oil temps. Any feedback is appreciated.
Deems
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robin(at)PaintTheWeb.com
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| Posted: Mon Mar 25, 2013 9:09 pm Post subject: Oil Temps |
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Great news Deems. Another option for oil cooler control is to place a hinged flap on the back side of the oil cooler. I have one with my new cowl set up that closes off up to 60% of the oil cooler and has allowed me to gain much control. Only 60% due to motor mount conflict (yours may be different) but it seems to be all the control I need. I have also had the butterfly version on other aircraft and generally prefer that solution mostly due to no additional room is required FWF. But this hinged flap was a simple solution that worked with my current control cable set up and functions well. If I lived in UT I would opt for 100% closure (and a good realtor) 
Robin
Sent from the new iPad
On Mar 25, 2013, at 9:50 PM, "Seano" <sean(at)braunandco.com (sean(at)braunandco.com)> wrote:
[quote] I believe nonstop aviation makes the oil cooler butterfly valves. I have one and it works great. Very easy to adjust by using a control knob with detents. Vans sells them. Glad to hear you fixed the issue. My #5 is the hottest.
Sent from my iPhone
On Mar 25, 2013, at 22:23, Deems Davis <deemsdavis(at)cox.net (deemsdavis(at)cox.net)> wrote:
| Quote: | This winter I figured out a way to fix 2 Heat related issues that have been with me since day one. 1. My # 6 cylinder ran 20-30 degrees hotter than any of the other. On hot (AZ) summer day's, I had to pay close attention to keep the Cyl temp under 420-430 deg on climbs. 2. my oil temps would also exceed 220 on long climbs to altitude and during the middle of summer if the OAT didn't get below 70F degs, the Oil Temp would stay above 200. Even on 'cooler days' it would rarely go below 196. So I fabricated a fiberglass intake that replaces to the slot cover in the lower cowl in front of the nose gear. and plumbed it to the Oil Cooler (in the same std location). I plugged the old 4" opening behind the # 6 cyl. The results after a couple of flights look encouraging. The #6 cyl, is now in line with the other cyls. (12 deg spread across all cyls). Last weekon a trip from DVT to SLC, in cruise the oil temp never got above 165 degrees. the OAT (at) 10-11k was 0 to -4 C.
So I'm a bit worried that the oil temps are now too cool. I've been of the opinion that the ideal oil temp is aprox 180 deg in order to cook off any moisture in the oil. So I'm wondering if I need to put a valve in-line somewhere to help regulate the oil temps. Any feedback is appreciated.
Deems
p://www.matronics.com/Navigator?RV10-List
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Mon Mar 25, 2013 9:18 pm Post subject: Oil Temps |
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Sounds good Deems. I think you are fine on oil temp. Remember that the
temp sensor is at the return line from the oil cooler, and temps in
the sump can run as much as 50 degrees hotter.
On Mon, Mar 25, 2013 at 9:23 PM, Deems Davis <deemsdavis(at)cox.net> wrote:
| Quote: | This winter I figured out a way to fix 2 Heat related issues that have been
with me since day one. 1. My # 6 cylinder ran 20-30 degrees hotter than any
of the other. On hot (AZ) summer day's, I had to pay close attention to keep
the Cyl temp under 420-430 deg on climbs. 2. my oil temps would also exceed
220 on long climbs to altitude and during the middle of summer if the OAT
didn't get below 70F degs, the Oil Temp would stay above 200. Even on
'cooler days' it would rarely go below 196.
So I fabricated a fiberglass intake that replaces to the slot cover in the
lower cowl in front of the nose gear. and plumbed it to the Oil Cooler (in
the same std location). I plugged the old 4" opening behind the # 6 cyl. The
results after a couple of flights look encouraging. The #6 cyl, is now in
line with the other cyls. (12 deg spread across all cyls). Last weekon a
trip from DVT to SLC, in cruise the oil temp never got above 165 degrees.
the OAT (at) 10-11k was 0 to -4 C.
So I'm a bit worried that the oil temps are now too cool. I've been of the
opinion that the ideal oil temp is aprox 180 deg in order to cook off any
moisture in the oil. So I'm wondering if I need to put a valve in-line
somewhere to help regulate the oil temps. Any feedback is appreciated.
Deems
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Greg McFarlane
Joined: 12 Apr 2012
Posts: 57
Location: Albany Western Australia
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| Posted: Tue Mar 26, 2013 2:47 am Post subject: Re: Oil Temps |
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Sounds good Deems, does your fiberglass vent in front of the nose gear leg hang down into the airstream and did you use the four inch scat to the oil cooler? Also have you figured out a quick on/off for the scat to cooler when you remove the cowls?
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Lew Gallagher
Joined: 04 Jan 2008
Posts: 402
Location: Greenville , SC
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| Posted: Tue Mar 26, 2013 3:31 am Post subject: Oil Temps |
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Uh Oh, Deems poked his head out and saw an airplane – must be Spring for sure!
Sounds like an excellent solution. Still James cowl, right? I’d love to see some pictures of your scoop.
We’re scheduled to loose the tower here at Donaldson in Greenville, SC – we’ll see how it goes.
Later, – Lew “relieved to be back to plain plane issues” Gallagher
do not archive
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Deems Davis
Joined: 09 Jan 2006
Posts: 925
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| Posted: Tue Mar 26, 2013 8:20 am Post subject: Oil Temps |
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Greg,
yes it does hang down into theair stream I used a 3.12" mailing tube as the mandrel to form the inlet tube and then faired it into the attach/cover plate with micro/body filler , put a 3/4+ radius around the inlet and then covered the whole thing with another couple of layers of fiberglass. I used 3 1/4 " scat tube, and fabricated a fiberglass reducer elbow that connects the scat to the oil cooler box. I may have some pics. I use a stainless steelexpandableclamp to attach/remove the scat tube when taking the cowl off.
Deems
On Tue, Mar 26, 2013 at 3:47 AM, Greg McFarlane <grbcmcfarlane(at)gmail.com (grbcmcfarlane(at)gmail.com)> wrote:
[quote] --> RV10-List message posted by: "Greg McFarlane" <grbcmcfarlane(at)gmail.com (grbcmcfarlane(at)gmail.com)>
Sounds good Deems, does your fiberglass vent in front of the nose gear leg hang down into the airstream and did you use the four inch scat to the oil cooler? Also have you figured out a quick on/off for the scat to cooler when you remove the cowls?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=397071#397071
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arget="_blank">http://www.matronics.com/Navigator?RV10-List
===========
http://forums.matronics.com
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le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
[b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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bruce1hwjohnson(at)yahoo.
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| Posted: Tue Mar 26, 2013 9:10 am Post subject: Oil Temps |
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Hey Deems, you never got back with me on the $5 bet I sent you on who's 10 is faster. Whats up?
From: Deems Davis <deemsdavis(at)cox.net>
To: rv10-list(at)matronics.com
Sent: Tuesday, March 26, 2013 9:19 AM
Subject: Re: Re: Oil Temps
Greg,
yes it does hang down into the air stream I used a 3.12" mailing tube as the mandrel to form the inlet tube and then faired it into the attach/cover plate with micro/body filler , put a 3/4+ radius around the inlet and then covered the whole thing with another couple of layers of fiberglass. I used 3 1/4 " scat tube, and fabricated a fiberglass reducer elbow that connects the scat to the oil cooler box. I may have some pics. I use a stainless steel expandable clamp to attach/remove the scat tube when taking the cowl off.
Deems
On Tue, Mar 26, 2013 at 3:47 AM, Greg McFarlane <grbcmcfarlane(at)gmail.com (grbcmcfarlane(at)gmail.com)> wrote:
[quote] --> RV10-List message posted by: "Greg McFarlane" <grbcmcfarlane(at)gmail.com (grbcmcfarlane(at)gmail.com)>
Sounds good Deems, does your fiberglass vent in front of the nose gear leg hang down into the airstream and did you use the four inch scat to the oil cooler? Also have you figured out a quick on/off for the scat to cooler when you remove the cowls?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=397071#397071
===========
arget="_blank">http://www.matronics.com/Navigator?RV10-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
[b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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