ORIGINAL: DenverJayhawk
opjose - thanks. With my old SK90 engine, i would have problems with a dead stick, similar to the person that posted the same issue with his Funtana 50. I cut and pasted your reply to my email for quick reference.
Basically, when i would go vertical, the engine would run fine. But when I throttled back from full to say mid throttle while the model was in vertical position, the engine would stall. I checked the tank and did a presure test and it was fine. But just in case, I ordered a new plug and stopper kit for the tank. I'll switch out all the fuel lines too.
Here is a problem I have had with one of my SK .91 in a scratch built plane. As soon as my fuel tank burns off about 1/4 the tank is so far away from the engine it wouldn't draw fuel due to lack of pressure. The tank is 8.5 inches away and mounted too low. Today I tried another engine in the plane, an OS .91FS, same thing. I'm going to try {no room} to get the fuel tank higher but I think I will be getting a fuel pump for my SK and just be done with fooling around. That OS you bought is outstanding!!!!