Hi All,

Finally I can make a JJ-1400 run so good and realiable that I flew my Yellow Aircraft Stingray two time. My engine has a lot of thrust and is able to unlimited vertical performance just after takeoff.

This is what my engine need to runs ok:

1.- Check fuel injector
2.- Remove the rear bearing oring
3.- change the Preload Spring so it has a pressure of 4kg at working leng
4.- Change the old very restrictive lubrication pipe for a new one that Joe just send me

I am using the old no inconel combustion chamber, the engine has 10 cycles and 20 liters of kerosene with this configuration and is running very good.

Most of my problem was with rear bearing and preload, what I have learned is that most important thing here is lubrication. My engine run for about 20 minutes with 2 liters before I changed the lubrication pipe, but I have always problem with the rear bearing. Now my engine run just for 11 minutes with 2 liters but the bearing are wet and cool.

Just my two cents,