I have 2 DA 50 one in the Carden Cuda and other in the YAK 54 EF.
I have many problems whit this engines.

The engine in the CUDA whe the plane is in inverted flat spin stop inmediatly, and I have more 40 dead stik landing. I have a friend is expert in walbro carbs, he put the needles just fine, the engine run great in the air and in land only in inverted flat spin stop in up ride flat spin the engine no stop. I use NX 23x8, amsoil and 87 octene gas. I put 6 holes in the fire wall of the Cuda and the engine stop.

The other engine never run fine in the first fly stop, in this case the carb was obstruction, clean, ajust the needels and now run fine, but stop in some violent blenders.

I change the engines the YAK for The CUDA and the Cuda Stop in inverted flat spin.

I put 5 or 6 mails to the DA and no response.

In the other hand I have a ZDZ 80 RV, in Lanier Laser 200 kit, this plane has 400 or more fligths, never, never stop, never a dead stik, and never I feel afraid whit this engine.

I need to know if whit a internal trumpet the problem fix, but DA no answer to me and I do not know where I can buy one.

Sorry for me spell

I never will buy a DA[:@][:@][:@][:@][:@][:@][:@]