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17 February 2008, 05:24 AM
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#151 (permalink) |
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Shot Down
Join Date: Nov 2004
Posts: 103
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Dogtail , the Dr1 has the same problem like the D7 if you use a modern engine with a dry sump engine . normal oil temperature is 176 fahrenheit , in a hot day with an aircooled engine you get easy 212 fahrenheit , to tangeres . In a D7 it is easy , just build the later version with the oiltank in front next to the engine .
In a Dr1 2 sperate tanks like in your drawing , but you have to put isolation material between . Allu likes to crag , brass is to brittle , best is copper . |
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17 February 2008, 05:54 AM
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#152 (permalink) |
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Forum Ace
Join Date: May 2006
Location: Intracoastal Waterway, USA
Posts: 581
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"Dogtail , the Dr1 has the same problem like the D7 if you use a modern engine with a dry sump engine . normal oil temperature is 176 fahrenheit , in a hot day with an aircooled engine you get easy 212 fahrenheit , to tangeres . In a D7 it is easy , just build the later version with the oiltank in front next to the engine ."
Underneath? Where the DIII sump would have been? john |
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17 February 2008, 09:39 AM
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#153 (permalink) |
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Forum Ace
Join Date: Dec 2004
Location: Chicago Area
Posts: 583
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John, See the tank along side the engine. Now this really isn't a D.VII and the engine isn't a Mercedes, but this is a standard location and size for a late model D.VII oil tank.
Garfield has made very good points regarding heat buildup in oil tanks, and all you builders should remember that you are the chief engineer on your craft and the sooner you recognize such inconvenient truths as heat buildup, in certain fuel tank designs/engine combinations, the better. 
Last edited by Machinbird; 17 February 2008 at 11:01 AM. Reason: punctuation |
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17 February 2008, 10:17 AM
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#155 (permalink) |
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Forum Ace
Join Date: Dec 2004
Location: Chicago Area
Posts: 583
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The picture showed the tank particularly well, so I used it, but the details of the aircraft & engine identification can be found in this thread: What Engine is this? Experts only!
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17 February 2008, 11:49 AM
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#159 (permalink) |
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Forum Ace
Join Date: May 2006
Location: Intracoastal Waterway, USA
Posts: 581
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But Sid,
would that tank location work (ie. physically fit) with a Ranger, and if so, could it upset cooling airflow? speaking of cooling airflow, is that a twitchy issue with a Ranger installation in a DVII? john |
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17 February 2008, 12:36 PM
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#160 (permalink) | |
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Forum Ace
Join Date: May 2006
Location: Intracoastal Waterway, USA
Posts: 581
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Quote:
what I was suggesting was that a D3 has a deep sump which must use a lot of space below the engine bearers. It looks like a Ranger wouldn't need this space, so you could put an oil tank there, or even an oil cooler. Jeff's project uses a Ranger so that is why this space might be available. best regards, John |
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