lml@lancaironline.net Mailing List Archive

Adding to Steve's comments, if you can't see something obvious perhaps look elsewhere. A great summary on bends and restrictions was on the list some years ago. Hot fuel can get tripped in vapor much easier on restriction, clog, tight turn, reducing diameter or whatever. Another thought was the discussion recently on venting. A partial vacuum can trip the fuel into vapor easier when hot. All of these things can be checked on the ground with some work. It is a puzzle and you really need to find the answer to this on the ground in case it is an impending failure of something. Good luck and remember pressure means nothing if the fuel isn't flowing.

Paul

On 2012-05-24, at 10:43, "Steve Colwell" <mcmess1919@yahoo.com> wrote:

Berni,

I would encourage you to do the testing on the ground not in the air. Fuel problems are the #1 cause of engine failure in homebuilts. Think Experimental as a derivative of “experiment”, which implies it may fly or it may not.

None of our planes are identical, but fuel system modifications combined with known problems should be reviewed by an expert (like Don at Airflow Performance). Even certified planes can have designed in fuel stoppage issues. I know, I owned one.

Steve

As soon as I receive it I will install, cowl up and make a flight followed by a shutdown and see if either or both of my changes have improved performance.

Thanks!

Berni