Hi ,

Can anyone give me some info , concerning "uniflow" tank operation ?
I've never used one before and I would like to know the subtleties involved with setting up , how it operates and plumbing this type of fuel tank .
I'd like to build a Brodak "Nobler" with a uniflow . Does Brodak sell uniflow tanks and what part number would be suitable for this kit ?

Thank a million

The idea of a uniflow tank is that it has only one vent (the "uni-") whose end is immersed in the fuel at the outboard side of the tank, just like the pickup.  It's supposed to minimize the fuel flow fluctuation (say that 3 times fast) from a full tank to nearly empty; also gives a definite "out of fuel" warning when the fuel level drops below the vent, by changing the draw significantly.  Brilliant and simple, as most brilliant things are...I've used the system in three 1/2A models (3 different tanks--shape and size) so far and it works well.  Strangely enough, it produces run characteristics very similar to my "floppy balloon" (no pressure) unvented tanks!

--Ray