Mike, thats an interesting point, I have made a new range of UAT's called CAT's (composite air traps) Olivier is testing them all and will publish finding in Jetpower magasine, also RCJI are doing a piece to by Colin Strauss.

I will see if its something that can be looked at, I certainly have been very keen to make the fittings and all tube, bores as large as possible within the designs so restrictions etc are minimised.

The three items being tested....

marcs