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That tank is similar to all the Hayes tanks but not as reliable and true they do not lend themselves to three line systems. Indeed they as well as the Hayes should be used with the more reliable two line system just like every trainer out there and they are defueled in exactly the same way you defuel your trainer, through the carb feed line. A simple cut somewhere along the carb feed line with a short length of tank tubing is where you fuel and defuel from.


Cowling are no brainers just run that feed line out and back in a hole or slot in the cowl almost anywhere. This has the hugh advantage especially with two strokes by providing somewhere to tune to a pinch. Also with inverted installations provides a place for hemostats if needed.


I have posted many photo sets showing exactly how its done. It has fewer failure modes than any other fuel system. That means the most reliablity possible and fewer lost flying days due to than other systems various problems.

That RCU artical linked above is excellent except it summarily dismisses two line systems when cowlings are used and leaves the impression one must use a three line system or some other anytime a cowl is used and nothing could be further from the truth.

Even a two line system on a completly exposed engine when done the same with a simple split carb feed line and connector tube is a big advantage when you can,t reach back into the remote needle valve, The solution is not a third line its a 3/8 piece of tube and cut in the feed line.

John