At 06:37 PM 7/10/2009, you wrote: >I am going to put my fuel in the wings. Larry Flesner says that I can get >10 gallons in each wing, which will give me my 20 gallons. I am going to >remove the header tank completely. Daniel R. Heath ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
You can get much more than 10 gallon in the outer wing panels but I wouldn't do it. I have a 12.5 gallon tank in each outer wing panel with no header tank. My tank is 10 inches horizontal behind the main spar and runs from the root 48 inch rib to the outer 36 inch rib in a stock KR2 RAF 48 wing. http://mysite.verizon.net/flesner/22.jpg The math prior to building indicated a 12.5 gallon tank. A later fill from a metered pump indicated 12.8 gallon so it was pretty close. By keeping the tank long and narrow you keep the bulk of the fuel very close to the C.G. so you get very little C.G. shift with fuel burn. If you eliminate the header tank make sure you do a good W&B to make sure everything stays in the C.G. envelope. I later found that with a tank in the out wing I needed to cut an access panel in the inboard wing so I could attach fuel lines, etc., when installing the outer wing panel. I cut the panel on the bottom side of the inboard wing, hinged it on the forward edge and hold it shut with two small screws on the trail edge. I think I settled on a 4"X 9" panel so I could get both hands inside the wing to make attachments. You may need a smaller or larger opening. 350 hours and no problems to date. Larry Flesner
