Difference between revisions of "Nose Oil Cooling"
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| − | [[Image: | + | == Overview == |
| + | [[Image:Oil_cooler_performance_chart.jpg|450px|right]] | ||
| + | [[Image:Vernatherm.jpg|right]]Oil cooling seems to be a chronic problem, so I'm going to try to capture some of the better ideas on how to control oil temperatures as well as background data that can be useful along the way. | ||
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| − | As you can see from the series of pictures of Rene Dugas' airplane, he has a significant bump on the bottom of his Velocity that creates a low pressure zone and allows for good airflow through the cooler. He says that he can fly WOT at low altitude with good temperatures with this setup. | + | As you can see from the series of pictures of Rene Dugas' airplane, he has a significant bump on the bottom of his Velocity that creates a low pressure zone and allows for good airflow through the cooler. He says that he can fly WOT at low altitude with good temperatures with this setup. |
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| + | Minimum vernatherm extension is .160" according to the below Lycoming information. I found a thread [http://www.matronics.com/forums/viewtopic.php?p=275604&sid=df6cdffb54f72eb7f8a92a1c66ea84c2 here] that gives these approximate overall dimensions. I've also found that you can by a replacement online at [http://www.sacskyranch.com/acatalog/Sacramento_Sky_Ranch_Oil_Filter_Adapter_21.html Sacramento Sky Ranch]. It is to be torqued to 300 in-lbs. The current model number is 53E22144, but you may find these older models in the field (53E19600 ; AEL19600 ; SL53E19600 ; 75944).<br/><br/> | ||
| + | ''I found a couple different measurements, but haven't found the specs yet''<br/> | ||
| + | ''cold: 3.800" hot:4.031"<br/> | ||
| − | + | ''diff: 0.231 (3/16" = 0.1876")''<br/> | |
| − | + | ''The Vernaterm should extend at least 0.160" Between 150 F and 185 F (the temperature stamped on the Vernatherm 85 C ).'' <br/> | |
| − | + | == Relevant articles and documents. == | |
| − | Relevant articles and documents. | + | [[Media:X-series flyer front.pdf|Curves on Ariflow Performance Coolers]]<br/> |
| − | [[Media: | ||
[[Media:Cool_Runnings_0609.pdf|Kitplanes article on Cooling]]<br/> | [[Media:Cool_Runnings_0609.pdf|Kitplanes article on Cooling]]<br/> | ||
[[Media:1E4.pdf|Lycoming IO-540 Operating Limits]]<br/> | [[Media:1E4.pdf|Lycoming IO-540 Operating Limits]]<br/> | ||
[[Media:Key Operations.pdf|Lycoming Operations Flyer]]<br/> | [[Media:Key Operations.pdf|Lycoming Operations Flyer]]<br/> | ||
| + | [[Media:ArticlesOilFilterKitsHi-Temp.pdf|Lycoming Oil Cooler Troubleshooting]]<br/> | ||
| + | [[Media:Piston_Engine_Troubleshooting.pdf|Aircraft Maintaince - Piston Engine Troubleshooting]]<br/> | ||
| + | == Oil Cooler Conversions == | ||
{| cellspacing="0" cellpadding="10" border="1" align="center" | {| cellspacing="0" cellpadding="10" border="1" align="center" | ||
| <center>Niagra Cooler Model</center> | | <center>Niagra Cooler Model</center> | ||
| Line 51: | Line 53: | ||
|}<br/> | |}<br/> | ||
| + | == Article Images == | ||
| + | [[Image:666_hose_drop.jpg|500px]]<br/> | ||
| + | |||
| + | [[Image:Oil_temp_effects.jpg|700px|left]]<br/> | ||
| + | [[Image:Cooler_outlet_temp.jpg|700px|left]] | ||
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| + | [[Image:Lets_do_math.jpg|left|450px]] | ||
| + | [[Image:Lets_do_math2.jpg|right|450px]]<br/> | ||
| + | |||
| + | [[Image:Lycoming_oil_schematic.jpg]]<br/> | ||
| + | [[Image:Lycoming_guidance.jpg]]<br/> | ||
| + | |||
| + | == Picture Gallery == | ||
<gallery> | <gallery> | ||
| − | Image: | + | Image:Oil_cooler_performance_chart.jpg|Typical Oil Cooler Performance Chart |
Image:Velocity_Building_018_589.jpeg|Rene Dugas Nose Cooler | Image:Velocity_Building_018_589.jpeg|Rene Dugas Nose Cooler | ||
Image:Velocity_building_004_159.jpeg|Rene Dugas Nose Cooler | Image:Velocity_building_004_159.jpeg|Rene Dugas Nose Cooler | ||
| Line 58: | Line 76: | ||
Image:Velocity_Building_019_125.jpeg|Rene Dugas Nose Cooler | Image:Velocity_Building_019_125.jpeg|Rene Dugas Nose Cooler | ||
Image:Velocity_Painted_mod_004_595.jpg|Rene Dugas Nose Cooler | Image:Velocity_Painted_mod_004_595.jpg|Rene Dugas Nose Cooler | ||
| + | Image:Lycoming_oil_schematic.jpg | ||
| + | Image:666_hose_drop.jpg | ||
| + | Image:Oil_temp_effects.jpg | ||
| + | Image:Cooler_outlet_temp.jpg | ||
| + | </gallery> | ||
| − | </ | + | == Articles == |
| + | [[File:ArticlesOilFilterKitsHi-Temp.pdf]]<br/> | ||
| + | [[File:Article-AOPA-April2005.pdf]] | ||
Latest revision as of 18:04, 20 August 2010
Contents
Overview
Oil cooling seems to be a chronic problem, so I'm going to try to capture some of the better ideas on how to control oil temperatures as well as background data that can be useful along the way.
The oil lines running to the nose are 1/2" 3003 AL tubing, mated to Aeroquip #8 stainless steel braided and firesleeved hose in under the cowling. Some folks have reported good additional cooling by adding [NACA_VG_Installation|vortex generators] ahead of their cooling inlets.
As you can see from the series of pictures of Rene Dugas' airplane, he has a significant bump on the bottom of his Velocity that creates a low pressure zone and allows for good airflow through the cooler. He says that he can fly WOT at low altitude with good temperatures with this setup.
Minimum vernatherm extension is .160" according to the below Lycoming information. I found a thread here that gives these approximate overall dimensions. I've also found that you can by a replacement online at Sacramento Sky Ranch. It is to be torqued to 300 in-lbs. The current model number is 53E22144, but you may find these older models in the field (53E19600 ; AEL19600 ; SL53E19600 ; 75944).
I found a couple different measurements, but haven't found the specs yet
cold: 3.800" hot:4.031"
diff: 0.231 (3/16" = 0.1876")
The Vernaterm should extend at least 0.160" Between 150 F and 185 F (the temperature stamped on the Vernatherm 85 C ).
Relevant articles and documents.
Curves on Ariflow Performance Coolers
Kitplanes article on Cooling
Lycoming IO-540 Operating Limits
Lycoming Operations Flyer
Lycoming Oil Cooler Troubleshooting
Aircraft Maintaince - Piston Engine Troubleshooting
Oil Cooler Conversions
| 200002A | IO-360, O-360, O-320 | P20002C | 8406R |
| 200006A | IO-360, O-360K, IO-540 | P20006C | 10611R |
| 200008A | IO-360, O-360K, IO-540, V-6, V-8 | P20008C | 10614R |
| 200009A | IO-540 |
Article Images
Picture Gallery
Typical Oil Cooler Performance Chart
Rene Dugas Nose Cooler
Rene Dugas Nose Cooler
Rene Dugas Nose Cooler
Rene Dugas Nose Cooler
Rene Dugas Nose Cooler
Articles
File:ArticlesOilFilterKitsHi-Temp.pdf
File:Article-AOPA-April2005.pdf
