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gord(at)thedampub.ca
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 Posted: Mon Jun 11, 2012 3:58 am Post subject: High oil temp |
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Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord
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jan.mevis(at)informavia.b
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| Posted: Mon Jun 11, 2012 4:17 am Post subject: High oil temp |
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Which engine? M14P or M14PF? If the 360 horsepower, the original oil cooler should be enough. Maybe have it checked (and thoroughly cleaned ?).
Jan
From: gord <gord(at)thedampub.ca (gord(at)thedampub.ca)>
Reply-To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Date: Monday 11 June 2012 13:54
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: High oil temp
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord
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gord(at)thedampub.ca
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| Posted: Mon Jun 11, 2012 4:40 am Post subject: High oil temp |
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Ity is the original m14p engine
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Jan Mevis
Sent: June-11-12 8:13 AM
To: yak-list(at)matronics.com
Subject: Re: High oil temp
Which engine? M14P or M14PF? If the 360 horsepower, the original oil cooler should be enough. Maybe have it checked (and thoroughly cleaned ?).
Jan
From: gord <gord(at)thedampub.ca (gord(at)thedampub.ca)>
Reply-To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Date: Monday 11 June 2012 13:54
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: High oil temp
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord | Quote: | | ww.matronics.com/Navigator?Yak-Listcomronics.com/contribution |
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[quote][b]
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richard.goode(at)russiana
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| Posted: Mon Jun 11, 2012 4:53 am Post subject: High oil temp |
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The standard oil cooler is fine for 360 HP. But a lot of these coolers are 20/30 years old, and have a layer of carbonised oil inside, effectively insulating the hot oil from the metal cooling part. One can clean them with certain chemicals, and also ultra-–sonically, but, whatever you do to it, an old cooler will never be as good as new one.
Also the standard oil cooler housing on the 50 is well into the air stream, unlike a Sukhoi, where the oil has to go through a duct.
Of course, going to 400 HP will intrinsically mean hotter oil.
We have added a second (Western) oil cooler to the circuit, but the best solution is to fit the gearbox oil cooler from the Mi-17 helicopter, which is exactly the same design; same fittings, but 50% larger.
Richard Goode
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of gord
Sent: 11 June 2012 12:54
To: yak-list(at)matronics.com
Subject: Yak-List: High oil temp
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord | Quote: | | _-= - The Yak-List Email Forum -arch & Download, 7-Day Browse, Chat, FAQ, |
[/b]http://www.matronics.com/Navigator?Yak-List; - MATRONICS WEB FORUMS -ums.matronics.com [/quote]01234
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jan.mevis(at)informavia.b
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| Posted: Mon Jun 11, 2012 4:53 am Post subject: High oil temp |
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Then the existing cooler should be enough, really.
Consider having the oil cooler cleaned? There are specialized companies (look around in the car world).
Jan
From: gord <gord(at)thedampub.ca (gord(at)thedampub.ca)>
Reply-To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Date: Monday 11 June 2012 14:37
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: RE: Yak-List: High oil temp
v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} <![endif]-->
Ity is the original m14p engine
From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)] On Behalf Of Jan Mevis
Sent: June-11-12 8:13 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: High oil temp
Which engine? M14P or M14PF? If the 360 horsepower, the original oil cooler should be enough. Maybe have it checked (and thoroughly cleaned ?).
Jan
From: gord <gord(at)thedampub.ca (gord(at)thedampub.ca)>
Reply-To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Date: Monday 11 June 2012 13:54
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: Yak-List: High oil temp
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord | Quote: | | ww.matronics.com/Navigator?Yak-Listcomronics.com/contribution |
012345678
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cjpilot710(at)aol.com
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| Posted: Mon Jun 11, 2012 5:18 am Post subject: High oil temp |
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What I've done and seem to work with a dirty cooler, is mix a solution of "Gunk" degreaser (25%) and mineral spirits (75%). Spray it into the cooler until you see it coming out the back. Let sit for a while (>5mins) than flush with water. It is surprising how dirty they can get.
Also maybe going to W120 and putting a little more oil in the tank will help.
Jim "Pappy" Goolsby
In a message dated 6/11/2012 8:54:05 A.M. Eastern Daylight Time, jan.mevis(at)informavia.be writes:
| Quote: | Then the existing cooler should be enough, really.
Consider having the oil cooler cleaned? There are specialized companies (look around in the car world).
Jan
From: gord <gord(at)thedampub.ca (gord(at)thedampub.ca)>
Reply-To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Date: Monday 11 June 2012 14:37
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: RE: High oil temp
v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);}
Ity is the original m14p engine
From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)] On Behalf Of Jan Mevis
Sent: June-11-12 8:13 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: High oil temp
Which engine? M14P or M14PF? If the 360 horsepower, the original oil cooler should be enough. Maybe have it checked (and thoroughly cleaned ?).
Jan
From: gord <gord(at)thedampub.ca (gord(at)thedampub.ca)>
Reply-To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Date: Monday 11 June 2012 13:54
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: High oil temp
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord | Quote: | | ww.matronics.com/Navigator?Yak-Listcomronics.com/contribution |
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[quote][b]
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jan.mevis(at)informavia.b
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| Posted: Mon Jun 11, 2012 5:34 am Post subject: High oil temp |
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The bigger oil cooler is nice, indeed (I have one) but it also implies having the cooler cowling modified.
From: Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)>
Reply-To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Date: Monday 11 June 2012 14:50
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: RE: High oil temp
<![endif]--> <![endif]-->
The standard oil cooler is fine for 360 HP. But a lot of these coolers are 20/30 years old, and have a layer of carbonised oil inside, effectively insulating the hot oil from the metal cooling part. One can clean them with certain chemicals, and also ultra-–sonically, but, whatever you do to it, an old cooler will never be as good as new one.
Also the standard oil cooler housing on the 50 is well into the air stream, unlike a Sukhoi, where the oil has to go through a duct.
Of course, going to 400 HP will intrinsically mean hotter oil.
We have added a second (Western) oil cooler to the circuit, but the best solution is to fit the gearbox oil cooler from the Mi-17 helicopter, which is exactly the same design; same fittings, but 50% larger.
Richard Goode
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)] On Behalf Of gord
Sent: 11 June 2012 12:54
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: High oil temp
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord | Quote: | | arch & Download, 7-Day Browse, Chat, FAQ, |
| Quote: | | ; - MATRONICS WEB FORUMS -ums.matronics.com<; - List Contribution Web Site -p; -Matt Dralle, List Admin.http://www.matronics.com/contribution[/url] |
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brian(at)lloyd.com
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| Posted: Mon Jun 11, 2012 7:21 am Post subject: High oil temp |
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On Mon, Jun 11, 2012 at 4:54 AM, gord <gord(at)thedampub.ca (gord(at)thedampub.ca)> wrote:
| Quote: |
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord
|
I am going to blaspheme here and leave a thought for everyone. If you speak with the oil manufacturers (Shell is pretty good about communicating) they suggest a *MINIMUM* operating oil temperature of 80C. That is right -- they say that oil should be at least 80C to work properly. Red line for the inlet oil temperature is up above 120C. (It depends on how much temperature rise the oil experiences going through the engine.) The CJ6A has an OUTLET oil temp gauge and that is the one I always paid attention to. As long as the outlet oil temp was below 120C I didn't care what the inlet temp got to.
Engine oil should be allowed to reach 100C at some point in its cycle through the engine to "boil out" moisture that collects in the oil from condensation of combustion products. I have no idea why the oil temp limits on our aircraft are set so low but suspect that it was because the older oils available when the aircraft were designed could not handle higher operating temperatures. The oils we get now can and are expected to. And after all, it is the oil we are protecting from high-temperature breakdown and coking, not the engine itself.
So, just between you and me, IMHO inlet oil temps reaching a "red line" of 85C is nothing to worry about.
YMMV
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian(at)lloyd.com (brian(at)lloyd.com)
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
[quote][b]
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k7wx
Joined: 24 May 2010
Posts: 117
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| Posted: Mon Jun 11, 2012 7:57 am Post subject: High oil temp |
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Agree completely.
Replaced my original CJ oil cooler with a new one from Doug Sapp and oil temps immediately came under control.
I seriously doubt that it would ever be possible to properly clean the inside of the original one.
Warren Hill
On Jun 11, 2012, at 5:50 AM, Richard Goode wrote:
| Quote: | The standard oil cooler is fine for 360 HP. But a lot of these coolers are 20/30 years old, and have a layer of carbonised oil inside, effectively insulating the hot oil from the metal cooling part. One can clean them with certain chemicals, and also ultra-–sonically, but, whatever you do to it, an old cooler will never be as good as new one.
Also the standard oil cooler housing on the 50 is well into the air stream, unlike a Sukhoi, where the oil has to go through a duct.
Of course, going to 400 HP will intrinsically mean hotter oil.
We have added a second (Western) oil cooler to the circuit, but the best solution is to fit the gearbox oil cooler from the Mi-17 helicopter, which is exactly the same design; same fittings, but 50% larger.
Richard Goode
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of gord
Sent: 11 June 2012 12:54
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: High oil temp
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord
| Quote: | | arch & Download, 7-Day Browse, Chat, FAQ, |
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wlannon(at)shaw.ca
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| Posted: Mon Jun 11, 2012 8:40 am Post subject: High oil temp |
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I have no idea of the oil tank capacity on the Yak 50 but, since it is using the M14 engine, it should be equivalent to similar installations.
The CJ6 (with a lower powered engine) oil tank has a max. capacity of 19 liters and a normal full capacity of 17 liters plus the necessary air space. In other military aircraft with radial engines the typical minimum capacity is 0.6 X full. The reason of course is to maintain adequate oil cooling. Based on this the CJ minimum would be 10 liters and I would approach that with some caution.
I would suggest that your oil capacity is far too low for the engine, especially at high power settings and OAT. In addition to maintaining an adequate oil supply you could change to Aeroshell 120W or Phillips X/C 25W60 which would help a bit.
Walt
From: gord (gord(at)thedampub.ca)
Sent: Monday, June 11, 2012 4:54 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: High oil temp
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord
[quote]
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/Navigator?Yak-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
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ssssskippy
Joined: 02 May 2010
Posts: 58
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| Posted: Mon Jun 11, 2012 8:53 am Post subject: High oil temp |
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But If you put more than 10liters during acro you will dump all the oil out each time you ll go inverted....
2012/6/11 Walter Lannon <wlannon(at)shaw.ca (wlannon(at)shaw.ca)>
[quote] I have no idea of the oil tank capacity on the Yak 50 but, since it is using the M14 engine, it should be equivalent to similar installations.
The CJ6 (with a lower powered engine) oil tank has a max. capacity of 19 liters and a normal full capacity of 17 liters plus the necessary air space. In other military aircraft with radial engines the typical minimum capacity is 0.6 X full. The reason of course is to maintain adequate oil cooling. Based on this the CJ minimum would be 10 liters and I would approach that with some caution.
I would suggest that your oil capacity is far too low for the engine, especially at high power settings and OAT. In addition to maintaining an adequate oil supply you could change to Aeroshell 120W or Phillips X/C 25W60 which would help a bit.
Walt
From: gord (gord(at)thedampub.ca)
Sent: Monday, June 11, 2012 4:54 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: High oil temp
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord
| Quote: |
et="_blank">http://www.matronics.com/Navigator?Yak-List
tp://forums.matronics.com
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mark.bitterlich(at)navy.m
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| Posted: Mon Jun 11, 2012 9:30 am Post subject: High oil temp |
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Pretty much all M-14 oil tanks are the same in my experience Walt. I
have seen them on 50's, 52's, 55's, Sukhoi 26's, 29's, 31's. They
appear to all be identical.
They are not easy to replace with a bigger model, the internals are
rather complicated for the inverted flight aspect.
Minimum is 9 liters. As I remember, full is 15 liters.
Running it above 9 or 10 with hard aerobatic flight usually results in
some venting of the oil so the common standard procedure is to keep it
at 9 or 10 for that type of flight.
I am a firm believer in Phillips X/C 25W60 I do not run heavy straight
weight oil as it is harder to get OUT of the engine when you are
initially starting and are pulling through the prop, or if some gets
into the intake tubes on a cool day.
Most folks doing SERIOUS aerobatics usually run these engines right up
at 100%. Oh... in case anyone wishes to debate the logic of this,
please do not.
In the summertime, I have never seen an M-14P, especially an M-14PF
where oil temp does not get right to the red line after about 10 minutes
of hard aerobatics at 95-100% power settings. The typical approach to
helping to reduce this effect is to remove them and have them internally
cleaned (external cleaning is also wise), or to replace them, or to get
a bigger one! (Richard Goode's comments)
My personal approach is rather unusual. I have put the thermal valve
BACK INTO the oil cooler. This was removed from YAK-50 Oil Coolers at
one point in their construction evolution. This causes a few things to
happen.
1. The engine oil comes up to temp much more quickly on a cool/cold
day. It also makes a cold engine start somewhat safer.
2. The engine oil comes up to the red line more slowly in hard
aerobatics. It still gets there, but it takes a little longer. Once it
GETS there, it takes the same amount of time and effort to get it to
come back down again. The logic of this is clear to anyone that has
messed with heat transfer in radiators (it's the same in cars) using
temperature controlled valves.
I am not recommending this change. It happened to me by accident
really. But I kept it. Anyway, it really does seem to help.
Mark
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viperdoc(at)mindspring.co
Guest
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| Posted: Mon Jun 11, 2012 10:26 am Post subject: High oil temp |
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16 liters
Doc
Sent from my iPad
On Jun 11, 2012, at 11:35 AM, "Walter Lannon" <wlannon(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
[quote] I have no idea of the oil tank capacity on the Yak 50 but, since it is using the M14 engine, it should be equivalent to similar installations.
The CJ6 (with a lower powered engine) oil tank has a max. capacity of 19 liters and a normal full capacity of 17 liters plus the necessary air space. In other military aircraft with radial engines the typical minimum capacity is 0.6 X full. The reason of course is to maintain adequate oil cooling. Based on this the CJ minimum would be 10 liters and I would approach that with some caution.
I would suggest that your oil capacity is far too low for the engine, especially at high power settings and OAT. In addition to maintaining an adequate oil supply you could change to Aeroshell 120W or Phillips X/C 25W60 which would help a bit.
Walt
From: gord (gord(at)thedampub.ca)
Sent: Monday, June 11, 2012 4:54 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: High oil temp
Now that we are into the summer temperatures my Yak 50 is up against the oil temp red line after 10 min of aerobatics using Aeroshell W100. Any solutions out there on cooling the oil. I have been running 11 qts. I am wondering if I add more if it will just end up all over the belly or would it help a bit. Also thinking of a second oil cooler. Does anyone have a second cooler installation? Thanks Gord
[b]
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rick(at)rvairshows.com
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| Posted: Mon Jun 11, 2012 11:16 am Post subject: High oil temp |
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I run 11 liters in my Sukhoi for Airshow flights and practice , and will use 12 or 13 liters in if really hot. I dont get any more oil blowing out than when i run 9 liters. Nikolai Timofeev does this and swears by it. If you are doing shows, no matter what you put in your contract, half the time they only have W100 on hand. So what Nikolai does is put about 20 quarts of W100 in the contract and he changes the oil at the show, after running hot oil temps.
Rick VOLKER
Sent from my iPhone
On Jun 11, 2012, at 1:27 PM, "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E" <mark.bitterlich(at)navy.mil> wrote:
[quote]
Pretty much all M-14 oil tanks are the same in my experience Walt. I
have seen them on 50's, 52's, 55's, Sukhoi 26's, 29's, 31's. They
appear to all be identical.
They are not easy to replace with a bigger model, the internals are
rather complicated for the inverted flight aspect.
Minimum is 9 liters. As I remember, full is 15 liters.
Running it above 9 or 10 with hard aerobatic flight usually results in
some venting of the oil so the common standard procedure is to keep it
at 9 or 10 for that type of flight.
I am a firm believer in Phillips X/C 25W60 I do not run heavy straight
weight oil as it is harder to get OUT of the engine when you are
initially starting and are pulling through the prop, or if some gets
into the intake tubes on a cool day.
Most folks doing SERIOUS aerobatics usually run these engines right up
at 100%. Oh... in case anyone wishes to debate the logic of this,
please do not.
In the summertime, I have never seen an M-14P, especially an M-14PF
where oil temp does not get right to the red line after about 10 minutes
of hard aerobatics at 95-100% power settings. The typical approach to
helping to reduce this effect is to remove them and have them internally
cleaned (external cleaning is also wise), or to replace them, or to get
a bigger one! (Richard Goode's comments)
My personal approach is rather unusual. I have put the thermal valve
BACK INTO the oil cooler. This was removed from YAK-50 Oil Coolers at
one point in their construction evolution. This causes a few things to
happen.
1. The engine oil comes up to temp much more quickly on a cool/cold
day. It also makes a cold engine start somewhat safer.
2. The engine oil comes up to the red line more slowly in hard
aerobatics. It still gets there, but it takes a little longer. Once it
GETS there, it takes the same amount of time and effort to get it to
come back down again. The logic of this is clear to anyone that has
messed with heat transfer in radiators (it's the same in cars) using
temperature controlled valves.
I am not recommending this change. It happened to me by accident
really. But I kept it. Anyway, it really does seem to help.
Mark
--
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mark.bitterlich(at)navy.m
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| Posted: Mon Jun 11, 2012 11:57 am Post subject: High oil temp |
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Smart.
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crobin(at)skyvantage.com
Guest
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| Posted: Tue Jun 12, 2012 9:48 am Post subject: High oil temp |
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My Wilga seems to run a bit hot.. . most likely due to 85 knots in cruise... Â However, I flushed the oil cooler with some fuel and was shocked at all the gunk that came out. Â Now it runs MUCH cooler - I use the oil cooler shutters to keep the oil in the higher temp range in all OAT ranges.
Loving the M14P on the Wilga.
Cory.
wilgabeast.com
[quote][b]
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dougsappllc(at)gmail.com
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| Posted: Tue Jun 12, 2012 12:38 pm Post subject: High oil temp |
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All,About a year ago I set up to flush oil coolers because of the rising replacement cost and the poor service I received from the oil cooler folks here on the west coast. I first bead blast the case to remove all paint, then solvent flush, and follow up with high pressure hot water to rinse. I seriously doubt that they are 100% clean and as effective as a new one but judging by the incredible amount of gunk I get out of the average cooler they should be vastly improved.
If you need further info please contact me off list.
Best,
Doug
On Tue, Jun 12, 2012 at 10:45 AM, Cory Robin <crobin(at)skyvantage.com (crobin(at)skyvantage.com)> wrote:
[quote]My Wilga seems to run a bit hot.. . most likely due to 85 knots in cruise... However, I flushed the oil cooler with some fuel and was shocked at all the gunk that came out. Now it runs MUCH cooler - I use the oil cooler shutters to keep the oil in the higher temp range in all OAT ranges.
Loving the M14P on the Wilga.
Cory.
wilgabeast.com
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et="_blank">http://www.matronics.com/Navigator?Yak-List
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Pete Fowler
Joined: 07 Jul 2009
Posts: 76
Location: California
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| Posted: Tue Jun 12, 2012 4:30 pm Post subject: Re: High oil temp |
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If you want to get an oil cooler serviced (cleaned), this place does great work and also does vintage stuff like Mustangs etc. I used to use them every time a racing engine blew up on the race cars.
http://www.oilcoolers.com/
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moose8154
Joined: 07 May 2012
Posts: 4
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| Posted: Tue Jun 12, 2012 7:42 pm Post subject: Re: High oil temp |
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Gord's airplane has the prototype oil cooler set-up which is different (looks smaller) than the stock 50s...
If they changed the design for the next 300 airplanes, that might be why.
Just my 2 cents.
Olivier
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gord(at)thedampub.ca
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| Posted: Wed Jun 13, 2012 2:47 am Post subject: High oil temp |
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I will measure the cooler today and post measurements for a comparison. We
are cleaning out the system this morning and pulling the cooler for a good
clean for starters. Thanks for all the good info all. Gord
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