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  #1  
Old 11-01-2013, 07:00 AM
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mick mick is offline
 
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Default External Tanks

Trial fitting my new tanks. Extra 35Ltrs per tank. Not sure of the performance penalty but I think they look hot anyway. Only takes a few minutes to remove them for normal operations.
[IMG][/IMG]



Mick
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  #2  
Old 11-01-2013, 07:08 AM
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Default Hard points

Ive often thought about those previous "a"model folks who have converted to tail wheel and how they could use the tricycle hard points to mount something external like a fuel tank or baggage compartment.

Your tanks look pretty real. I wonder what would happen if you accidently got close to a TFR here? The security over liberty mindset may not present a pleasant outcome.

By the way, they look cool and thinks for sharing!
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  #3  
Old 11-01-2013, 08:33 AM
larharris2 larharris2 is offline
 
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I like them. I want some, too.
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  #4  
Old 11-01-2013, 08:55 AM
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Mega Mega mega Cool!

Label one of them "Hi There!" and the other "Dear John..." http://www.screened.com/dr-strangelo...ay/131-266620/
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  #5  
Old 11-01-2013, 09:08 AM
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Default Friggin' awesome!

I want to see a picture from the front, showing the overall plane with both external tanks, please.
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  #6  
Old 11-01-2013, 09:43 AM
Aryana Aryana is offline
 
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Now that is cool looking!
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  #7  
Old 11-01-2013, 09:46 AM
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Proceed with caution. That much mass on what looks like a ~12" arm may cause a significant change in wing torsional frequency.
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  #8  
Old 11-01-2013, 09:48 AM
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Quote:
Originally Posted by DanH View Post
Proceed with caution. That much mass on what looks like a ~12" arm may cause a significant change in wing torsional frequency.
Just like wingtip tanks - each mod needs to be considered individually for those unintended consequences. Having said that, it's a cool looking mod!
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  #9  
Old 11-01-2013, 09:50 AM
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N941WR N941WR is offline
 
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They need fins on them.

Very cool! How did you plumb them into your fuel system and how did you support the tank? Do you think this can be done as a retrofit to a flying aircraft?

Here is a picture of an RV-4 with external baggage pods. I would think they could be modified into fuel tanks rather easily.
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  #10  
Old 11-01-2013, 04:35 PM
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Default

The center of gravity of the tank is just forward of the wing spar, about 1/4". The rear attachment is more for stability. This is just a test tank that has no plumbing installed and will be used for load testing only.
I will be plumbing the external tanks to the main tanks and transferring fuel with an electric fuel pump. My thoughts at the moment are that a line from the highest point on the main tank will return to the external tank so if the transfer pump is left on it will not over fill the mains and cause the fuel to be dumped out the vent lines. I would rather use the fuel from the external tanks first and this would allow me to run the fuel pumps until they are dry.

Mick
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