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  #61  
Old 10-25-2011, 12:24 AM
E. D. Eliot E. D. Eliot is offline
 
Join Date: Dec 2005
Location: San Pedro
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Default Looks good

to me - I believe that something along the lines of these fuel tanks is likely the answer. Again, I am no engineer and will leave it up to Van's engineers to decide what us best. I like the feature of no riveted joints in a tank - also, these spun tanks are strong. Irregardless of what Van's does, I'll likely put a spun glass/plastic tank in my 12 after initial inspection. Time will tell.
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  #62  
Old 10-25-2011, 07:44 AM
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JoeM JoeM is offline
 
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Default

How about a wing tank option for those who plan on putting the wings on and leaving them on. Get the fuel out of the cocpit altogether.
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  #63  
Old 10-25-2011, 10:25 AM
TThurston TThurston is offline
 
Join Date: Jan 2007
Location: Orem, UT
Posts: 213
Default Belt and Suspenders

For what it's worth: the RANS S-19 has plastic tanks between the spars in the non-removable wings. But I believe it's a significantly slower build. And it's heavier.
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  #64  
Old 10-25-2011, 11:13 AM
tim walter tim walter is offline
 
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Location: san rafael
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Quote:
Originally Posted by JoeM View Post
How about a wing tank option for those who plan on putting the wings on and leaving them on. Get the fuel out of the cocpit altogether.
I doubt the wings are designed to take that load.
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  #65  
Old 10-25-2011, 11:41 AM
tim walter tim walter is offline
 
Join Date: Apr 2011
Location: san rafael
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what are the dimensions of the fuel tank? LxWxH ?
and the empty weight?

I am looking at racing fuel cells and if they would fit, seem to me to be a great idea.
There are plenty of 22gal versions (or 24/32 or more if you want).
the lightest ones are around 22lbs with foam and baffling.

they make them in various different configurations, so one of them should fit in the baggage area I would imagine.
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  #66  
Old 10-25-2011, 11:45 AM
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Geico266 Geico266 is offline
 
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Location: Huskerland, USA
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The shape is not exactly rectangle, and the return line needs to be above the fuel level to prevent siphoning (that detail can be worked out latter). I doubt you could find an off the shelf tank with the fuel lines on the bottom, but I'll bet the manufacturer would be interested in building some for us if the quantities were there. Certainly, one could be built but at what cost? What would people be willing to pay? $200 .... $400?

Here are the general dimensions.... 23" x 17" x 12"
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Last edited by Geico266 : 10-25-2011 at 02:34 PM.
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  #67  
Old 10-25-2011, 11:49 AM
tim walter tim walter is offline
 
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Quote:
Originally Posted by Geico266 View Post
The shape is not exactly rectagle, and the return line needs to be above the fuel level to prevent syphoning (that detail can be worked out latter). I doubt you could find an off the shelf tank with the fuel lines on the bottom, but I'll bet the manufaturer wouyld be interested in building some for us if the quantities were there. Certainly, one could be built but at what cost? What would people be willing to pay? $200 .... $400?

Here are the general dimensions.... 23" x 17" x 12"
A quick cursory look at the ATL catalog shows this fuel cell:
gal part# Lbs L" W" H"
22 SUBA122B 21 25.13 16.75 13.75
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  #68  
Old 10-25-2011, 12:12 PM
sandpiper sandpiper is offline
 
Join Date: Nov 2009
Location: Independence, OR
Posts: 316
Default

I would be willing to pay alot if it meant the difference between being a crispy critter or not. But, my first preference would be for a Vans analysis and, if required, solution.
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  #69  
Old 10-25-2011, 12:38 PM
Mich48041 Mich48041 is offline
 
Join Date: Apr 2008
Location: Riley TWP MI
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Default

The RV-12 fuel tank has baffles to keep part of the fuel from moving to the aft of the tank during a climb, especially at takeoff. Suppose an RV-12 on a long cross-country trip arrives at the destination with 3 or 4 gallons of fuel left. It becomes necessary to go around for some reason. Without baffles, all of the remaining fuel falls to the back of the tank, possibly uncovering the outlet port. The outlet port of an alternate fuel tank should not be uncovered in any normal flight attitude when the fuel level is low. What good is a fuel reserve if it can not be used? There could be other requirements for the fuel tank that we might not be aware of.
Joe
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  #70  
Old 10-25-2011, 01:27 PM
E. D. Eliot E. D. Eliot is offline
 
Join Date: Dec 2005
Location: San Pedro
Posts: 1,013
Default Agree

with Larry and John - there either 'is' or 'can be' a spun glass/plastic fuel tank that some manufacturer has or can make to Van's specifications.

Hopefully, Van's is investigating these options. In my opinion, a safe fuel tank is paramount to the safety of the RV-12. After what we have learned about the current tank, I don't think that the fabricated aluminum tank is safe. I'm not an engineer of any kind - I just want a safe tank in back of my seat in my RV-12. I have pretty much decided to find and install a spun glass/plastic tank in my 12 after inspection. I really hope that Van's will offer a spun glass/plastic tank - maybe as an option as I am pretty sure that Van's can do a better job than I of picking my tank.
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