I had 15 gallons in the header and 5 in each stub wing behind the spar. I think that is fairly close to the ideal amount of fuel for a KR with a 2180 VW. I could not really tell any difference in pitch no matter what my fuel situation was with me and my 75 pound son or just me. I did notice that my cruise speed would go up a few knots if I let the header burn down half way and kept the wings full.
I did notice a big change in controlability once when I was doing initial testing with 150 pounds of ballast in the front seat with me and my transfer pump rufused to prime while my header was getting low. ---------- Original Message ---------------------------------- From: [email protected] Reply-To: KRnet <[email protected]> List-Post: [email protected] Date: Thu, 11 Mar 2004 19:23:43 EST >I have a header tank only and i cant see any changes in pitch that i have >noticed after a long flight i think i may add 6 gals and that's it you don't >need >it with vw. read below by dan deal > >You have probably already decided to install wing tanks since most of the KRs >now built do have them. However, I have found in many hours of KR flying and >many cross country trips that about three hours is all I can stand to sit in a >KR. Since most of the VW engines burn between 4 to 5 gallons per hour, this >indicates that 16 gallons would easily go the 3 hours and have some reserve. >Therefore, it is my opinion that if you have around 15 to 16 gallons in the >main >tank, that is enough and would not warrant the trouble of installing wing >tanks. My own N4DD has only 13 > >5. >gallons in the nose. I found that I would often run about 30 minutes short of >where I wanted to go. When I installed the wing skins on N4DD, I installed >the tank from the front spar to the rear spar and between the first two ribs. >This gave me 15 gallons per side; this is not needed. Since I usually only put >6 >to 8 gallons in these tanks, the constant sloshing from front to rear is >continually changing the C.G. and requires constant attention. Please donât >make >the same mistake I did. >mac n1055a >_______________________________________ >to UNsubscribe from KRnet, send a message to [email protected] >please see other KRnet info at http://www.krnet.org/info.html >
