Andy and Andre',

Today I decided to take some measurements between my three identical engine and bypass installations. Decided to do this before I run any tests; first because I don't have a usable fireX now and second, because I might pick up the reason for my problem on this particular install.

What do you know; a glaring difference between the three installations became very obvious.

After measuring my problem setup I found that the turbine exhaust nozzle was 15mm and 25mm closer to the thrust pipe than compared to my other two installations (both of which I have absolutely no problem with).

Maybe I am too close and therefor choking the turbine during spool up to full power, which in turn is then not allowing for a proper venturi effect to form around the turbine???

What do you think guys - I'm quite keen to move my turbine further forward (away from the thrust pipe) by at least 15mm.....

Again, thanks for your help.

Jan