I think that is the 52cc Chinese engine I purchased because it was so cheap I actually bought two of them. The first I mounted up in an Aeroworks Yak 54. The engine whch I operated for perhaps a year and maybe 25 flights was difficult to start and the only successful way to start it was with a starter (which by the wa are starters that are expensive).

Beyond the starting problem in the air the engine was totally reliable and I never had a flame out of any kind.

The power however was very disappointing and was more like a thirty cc engine. The airplane is a delight to fly even with that engine so I discarded the engine and replaced it with an OS 55cc gassor and the difference was hugh and the airplane now can be flown to both its and my limits.

So now I have mostly stuck with OS gassers adding a 33CC OS in my giant old timer (124 inchs). I am thinking about one of the newer small gassors also, Perhaps DLE

John