This is the engine. It's possible that the guy fiddling with it at our field just had a early model that had bugs in it. The ratings on the Horizen website look good. It is around a .91 size reguular four stroke motor in size and weighs around the same. Should be good if they worked the bugs out of it. Same price as there Saito .91 4 stroke glow engine. It would be nice to find out if this engine can give you some power like a TT .91 or the YS 110FZ I run on glow fuel.

That video you have with the bubbles on the 9cc motor looks alot like what was happening with the JBA 15cc motor I had. Except that engine never really started except for 30 seconds and then never again. The DLE 20 with a larger than average .60 size plane worked good for me as the smallest reliable gas powered setup I don't know about these conversions they seem up and down in reliability and drill a hole in your head with how noisy they are. Just guessing but it might have something to do with the gasoline carb not working to good with a small glow frame or that small spark plug having to ignite that gasoline /oil mixture that gunks up easily. Bigger conversions don't have alot of these problems possibly becasuse the gasoline/oil mix gets in and burns easier. Who knows they might have worked these problems out with this engine hope so!!! $200 is way too expensive for this engine especially if you get a Lemon. When there shown to be reliable and around $100 tha's when I'll get one.