ORIGINAL: zac137
ARUP- do you make your own bladder? Do you still have the vent line in the bladder? How do you go about setting it up? sounds pretty interesting.
Go to the Pylon Racing forum and I'm sure there is info there to direct you. I have used bladders (balloons, surgical tubing, etc.) in CL speed/ combat airplanes but never raced RC or used these tanks. However, I know those type of tanks exist. The fuel is drawn from the bladder that is inside the tank. The vent/pressure line goes into the tank but is not routed into the bladder. Excess castor/ lubricant gradually builds up inside tank (but outside the bladder) and has to be drained out from time to time.