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  #11  
Old 10-31-2020, 04:49 PM
MElstien MElstien is offline
 
Join Date: Jan 2013
Location: Kinnelon NJ
Posts: 181
Default Extra Fuel RV-10

I have cut sheet metal for a tank that fits in the baggage compartment snug up against the rear seats and does not impinge much on the door opening. It will hold a little over 16 gallons if my math is correct.

I plan to plumb it into a T fitting in the left wing root on the return fuel line of my FLY EFII system and to put a check valve in the line to the rear tank.

My plan is that after flying 1+ hours on the left tank, switch to the right tank, pump from rear tank to left tank Fly-EFII return line. One end of the return line goes to the Andair duplex fuel valve which will act as a block when turned to right tank feed. The other end of the return line feeds into the left tank. This is where the fuel will exit. Evidence of filling can be seen on the left fuel gauge. I could add evidence of tank depletion by adding a float to the extra tank and feeding it to the EFIS.

I may put the pump on an automatic timer and switch.

I like evidence of the left tank filling because that is really what you want to see.

The tank will be removeable and probably only used on flights that may push normal IFR reserves for added safety and longer VFR flights.

It keeps the weight off the wing and is centered.

Concerns:
  • Added weight in baggage compartment of the fuel. Under 100 pounds.
  • Impacts CG, which may be a positive on a RV-10
  • Fuel in the cabin.
  • Pumping into a full tank and spilling out the vent line.

I know of one other that has done this 2 times and it has worked out well.
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  #12  
Old 10-31-2020, 04:59 PM
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rv6rick rv6rick is offline
 
Join Date: Apr 2005
Location: Chesapeake Bay
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I installed the Hotel Whiskey ER tanks in my Slider Fastback 8 with the AVEO zip tips and hinged mount. Wasn’t a big deal to make it all fit. If I wasn’t on my phone I’d post a pic.
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  #13  
Old 10-31-2020, 05:07 PM
TS Flightlines TS Flightlines is offline
 
Join Date: Apr 2010
Location: Ridgeland, SC
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The pic I posed was from a RECENT RV10 build---still under construction. I think he has the Aeroleds-----and there was NO WAY the tanks were going in. I havent seen the insides of the Zip Tips, but I do know the tank pretty much fills up the tip. Hench the 45* angled from of the tank to clear the light housing.

Tom
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  #14  
Old 10-31-2020, 06:38 PM
bnovak1220 bnovak1220 is offline
 
Join Date: Jan 2016
Location: Lynchburg, VA
Posts: 19
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Great feed back everyone! Gives me a bit more to think about -
Thank you !
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  #15  
Old 11-01-2020, 04:36 AM
sailvi767 sailvi767 is offline
 
Join Date: Sep 2010
Location: Charlotte NC
Posts: 1,290
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Keep in mind from a weight standpoint fuel in the wings is better than fuel in the fuselage. In addition all aircraft I have flown burn the fuselage fuel first then the wing fuel. I am not sure there is a easy way to plumb that however and in the quantity we are discussing probably not that important.
G.
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Last edited by sailvi767 : 11-01-2020 at 04:39 AM.
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  #16  
Old 11-01-2020, 05:58 AM
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Bill.Peyton Bill.Peyton is offline
 
Join Date: Sep 2009
Location: St. Louis, MO
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I might add that I plumbed at "T" in the pump output line of each of the HW tanks and added a low pressure switch that is connected to the G3X Display which indicates that fuel is actually flowing through the line. Light extinguishes when HW tank is empty. It's just a little added confirmation that fuel is actually being pumped into the mains.
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  #17  
Old 11-01-2020, 07:59 AM
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1001001 1001001 is offline
 
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Quote:
Originally Posted by TS Flightlines View Post
The pic I posed was from a RECENT RV10 build---still under construction. I think he has the Aeroleds-----and there was NO WAY the tanks were going in. I havent seen the insides of the Zip Tips, but I do know the tank pretty much fills up the tip. Hench the 45* angled from of the tank to clear the light housing.

Tom
I have RV-10 ZipTips and a friend has the HW tanks in his RV-10. Unfortunately, they are incompatible, as you have said. Even with that 45 deg angle, I don't believe they would fit.
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