I am getting ready for my winter project and I had a question. I hope to build a Balsa USA Eindecker .90 size. What engine have most put on it. I know it calls for 40-60 2 stroke or 60-90 4 stroke.

Well did you want to go 2 or 4 cycle?

I've had REALLY good luck with the SuperTigre 2 cycle engines. I now have the G-51 in three .40 sized planes and have had NO issues with them at all. Easy break-in, easy to adjust, LOTS of power. I have one in my H9 F-22 and it screams with it, as well as a small FW 190D9

Put a 1.00 Saito in it, and use a large diameter, low pitch prop (16-4 Zinger comes to mind). It isn't a fast plane, no need to put a high winding engine in it. The 1.00 will spin a large diameter prop fast enough to let you putt-putt around and sound as good as you look. A .91 will work also, I used this size prop on a DR-I with a .91, but a 1.00 will give you a little more oomph.

It will sound better with a four stroke, most vintage aircraft sound great with a four stroke in general but a little over sized and propped large they really take on a new character compared to a screaming 2 stroke. I'd use at least the 91 FS if not larger engine and as another poster mentioned use a larger prop with low pitch.

For a two stroke I'd use the 60 and build a custom muffler for it or it will sound terrible.

David

I would choose a heavy motor as the Eindecker looks to be short nose coupled. Look at the OS 91 four stroke. I think it can turn a big prop also.

Carl

That plane is hollarin for a putt-putt in a 4-stroke engine. I would agree with the saito 1.00. Throttle back and it would look and sound great in the air. That engine could also be used later on if need be.
Edwin

Thanks guys, I am hoping to put a 4 stroker on it. I was wondering if anyone has put a gasser on it. I saw a few threads about that while doing some research but they where old threads.

been flying mine for 3 yrs with os120 4stroke plus lead to balance , I'm going to a g26 gasser for next season , more wt and about the same power.

happy landings charlie

I am in the process of building the .90 size Eindecker and plan on installing the new Zenoah G20.
It is going to need the nose weight.

4 strokes are nice for warbirds in my opinion because they have smaller swivel type mufflers.

Take it from me, get the OS 91 four-stroke & you won't be disappointed. Mine's been running great on the Eindecker for 8 seasons. It is a trouble-free motor & sounds really neat on this warbird.