fuel tank question

Sometimes the carb line isn't accessable for filling. Then you use a third line for filling.

Dr.1 Driver "There's a Hun in the sun!"

Fuel Dots.

A third line isn't necessary. Some installations make it difficult to get to the carb line for filling and emptying the tank so a third line is added for that purpose. The third line needs to go to the bottom of the tank somewhere if you are going to empty the tank through it.

A cleaner installation uses Fuel Dots ("T" between the carb and tank. Look at

Bend the third line to the top of the tank, just like the muffler line. To defuel turn the plane upside-down.

Larry

...or stand it on its nose...

I like having 3 lines. I bend the vent line to the top of the tank, and bend the fill line to the bottom front of the tank. Usually I just attach a legnth of fuel tubing to the fill line, put a plug in the end and let it hang out under the plane. Several of my planes have fuel pumps and a third line is necessary for filling the tank. Fuel goes in the fill line and air is displaced out the vent line. The carb (or clunk) line is closed off by the pump and air cant get out that way. A third line is more work initially but I find it to be very reliable. It also makes filling and draining the tank easy.

Peter

I hate haveing to take 'special' steps to defuel a plane as I have always found the extra 'hold your mouth right' steps to be a pain.

However in the case where the plane has a fuel pump (my gassers), I put a "T" in the supply line and just use it . . .

Or route it to the bottom of the tank and spare the model the indignity of being turned over. It's worked that way for me for years.

Why not do it the easy way and bend it down to the bottom?

Anyone else found this to be an effective way of flooding your engine? I tried it a couple of times but then resorted to disconnecting the line from the carb and plugging it to avoid filling the engine with fuel, or is there another way?

and that is good for tightly

Close the throttle all the way before fueling. I leave mine in the shut off position when I turn off the plane so I don't forget.

Or reach in with a pair of hemostats