JayH
Registered User
NE Iowa
Hi Folks,
This greenhorn needs some expert advise. The Smith cub fuel system does not call for header tanks (24 gal per side with forward and aft fuel pick ups) I see that the Airframes Inc 24 gal tanks also say "headerless". My understanding of header tanks for the most part is to maintain fuel supply to the engine in sustained pitch up/down (unusual attitude) somewhat like a header tank in an aerobatic environment. My question is: with just a left/right section fuel valve, could you still starve the engine of fuel in a sustained right or left turn. Example: running off right tank and down about 1/2. In a sustained right turn, would the fuel fall away from the pick ups to the point you would get fuel starvation. Question #2: If this is the case, would a right/left/both fuel vale cure the problem in a headerless system. I'm thinking both fuel caps vented. I guess my Cessna ran this way but don't see a lot of Cubs set up with a "both" selection. Also, I think Cessna ran a crossfeed setup......? Insight on this would greatly expand my education in this homebuild adventure. Thanks, Jay (building a Smith Cub)
This greenhorn needs some expert advise. The Smith cub fuel system does not call for header tanks (24 gal per side with forward and aft fuel pick ups) I see that the Airframes Inc 24 gal tanks also say "headerless". My understanding of header tanks for the most part is to maintain fuel supply to the engine in sustained pitch up/down (unusual attitude) somewhat like a header tank in an aerobatic environment. My question is: with just a left/right section fuel valve, could you still starve the engine of fuel in a sustained right or left turn. Example: running off right tank and down about 1/2. In a sustained right turn, would the fuel fall away from the pick ups to the point you would get fuel starvation. Question #2: If this is the case, would a right/left/both fuel vale cure the problem in a headerless system. I'm thinking both fuel caps vented. I guess my Cessna ran this way but don't see a lot of Cubs set up with a "both" selection. Also, I think Cessna ran a crossfeed setup......? Insight on this would greatly expand my education in this homebuild adventure. Thanks, Jay (building a Smith Cub)