ORIGINAL: builder jim
I have a high wing mono plane and need to place the tank very low and almost to the firewall sideways. it has the os160 twin and to be able to scale out the interior this is the arrangment I came up with, but the question is three lines from the tank. one is vent top one the other is to carb the lowest one the other for the fill cap. both the carb and the fill lines are clunked, can the carb line be only half way back? this leaves me to believe that on banked turn the fuel at half full will run to the turning side and eng will starve or guit , I think I need some help here... PLEASE builder jim
With the carb line only 1/2 way back you are going to have problems, especially once you get below 1/2 tank. Any manuver (except straight and level flight) is liable to move the fuel away from the clunk.
When I do my 3 line tanks I do them as follows:
One line to the vent/pressure tube (from the muffler)
The other 2 lines are clunked and all the way to the back of the tank. I have not had any problems with the lines tangling or falling forward (even with an "unscheduled" landing
)
This way, as long as I know which is my vent/pressure line, it makes no difference which of the other lines go where. FWIW, I also use 3 different colors for my lines, one for each function.