ORIGINAL: acam37
You have answered my question. And the answer is to give this plane back to my dad and let him put a motor on it. I will stick with .40 size planes and helicopters. Going back to glow fuel for a big plane in not an option for me. The nearest hobby shop with fuel is 90 miles away. As for the OS 160 ,I tried power master and byrons 5% and 15%, numerous glow plugs, on board glow system, closing off one of the pitts stacks and anything else the "expurts" suggested. It would always lean out in the air and die. I think I just had a dud. Anyway I sold the Ultimate and the engine went with it. Of course I let the new owner know of the problem before he bought it.
We weren't trying to discourage you, just point out you needed to look in another direction for power. I could tell early you didn't really want to spend a lot of cash on this thing. But that big gasser would spell disaster and misery on a massive scale.
You know if you look on that same site there is another option, but it's not exactly cheap either.....electric. But then you're opening a whole new can of worms if you're not already set up with chargers and support equipment. And no matter how you slice it, packs aren't cheap, although from that site you can get a pack set for about $200...if they don't puff on you
It does indeed sound like you had a serious problem with that 160....or a ghost in the fuel system. I have unfortunately heard of a few others that did exactly the same thing....and never did figure out why either. The ones I had were stupid easy to run. Set, fuel, backflip and fly all day long. But it can be really frustrating if you have a problem and can't find it. A YS can be the same way, I chased my tail all day long recently until I found a split in my fuel line that was so small, so insignificant, that I just found it by accident taking the plane apart. The engine would run fine until it stayed at full power for a second or 3, then it would lean out. I was thinking it was worn out (It only has I dunno, maybe 150 gallons through it LOL) and what it turned out to be was it wouldn't suck air unless it was really sucking hard...then there was a delay from there until the air bubbles hit the engine, then it would go nuts. While taking the plane apart I just happened to be standing there talking to someone while I was defueling and fiddling with the fuel filter, and felt what I thought was wetness where it shouldn't be....so I changed a 1" piece of fuel line, cranked the engine and it ran fine from then on. But I was about 2 seconds from chalking it up as worn out. And it's not even close....
Chuck is right though, if you can figure it out you will love that plane. Not much flies like a 2 meter pattern plane. Even the crappy ones fly pretty darned good. Don't give up yet, keep looking.
-Mike