For 3D and pattern, what is the right length of the clunk-tube inside fuel-tank. In other words, clunk near back-end of the tank or near tank-center.

always near the back in my opinion

If near back, howabout when diving nose down?

I was told that the clunk has to be placed near the back of the tank. When you dive you normally close the throttle to idle so the engine doesn't use much fuel. This never caused any problems to me

barto is correct


I prefer to have my engine without fuel in nose down attitudes than in nose high attitudes.........