kj66 upgrade

[jetflydemoteam]

Reading on this forum i decided to change the diffusor on old 1999 kj66
after failure..

soon test on stand

Jetflydemoteam - Home page

 

[jetflydemoteam]

today test on stand
first run on 1999 kj66.
i can to have fast accelleration than old diffuser

8,5 kg - 120.000 9,1kg - 123.000

video

-IEEvncnsrU[/media] (1999 year) with new diffuser after maintenance - YouTube

 

[frema]

yes i know
this diffusor is letting more air through
thats all
the flame likes air
if he gets it right , then the engine will realy like it.
good job

 

[Gerald Rutten]

Hi Christian, nice to see you here! Good looking diffuser you made there. I have a similar diffusor for the KJ66 drawn in autocad, not tried yet. Did you simply extend the existing original wedges or did you change geometry slightly? Curious on how you calculated outflow area.

Best regards,
Gerald

 

[jetflydemoteam]

ciao Gerald...

i simply extended the original wedges...like your drawing (the cnc radius is according to the tools available)
i added n.3 hole for bearing cooling.......an reworked the compressor cover to reduce gap
then all seem to be good..