RE: goldberg obsession 3-d??
I just noticed what Tower was selling it for a couple days ago, and have been researching it ever since. I agree with you...It does look like a pretty good deal for a plane of that size. I also hate the mess, and cost of glow fuel too! [:'(]
I have a MVVS 2.15 & a MVVS 1.60 sitting around that are both in need of a home, but I'm leaning toward putting the MVVS 1.60 with a tuned pipe in the Obsession. I originally bought the 1.60 to put in a OMP 80" Edge, but changed my mind, and decided to go with the 2.15 in that plane. So I've been looking for a plane for the 1.60 ever since.
From everything I've read so far, it seems like an O.S. 1.60 with a pitts style muffler has more than enough power for the Obsession. (although this is based purely on what I've read, and not from my own experience). The MVVS 1.60 with a tuned pipe puts out as much, if not more, power than the O.S. with a pitts (the O.S. 1.60 is a little stronger on a tuned pipe though). So my only concerns are whether you can mount a tuned pipe on this plane, and how difficult will it be to balance the model with the extra weight up front? I've heard that the fuse is pretty narrow, and some are having trouble balancing it with even glow engines! So I don't know if you could fit anything much bigger than the 1.60 in the nose. The MVVS 2.15 is quite a bit bigger, and a lot heavier. I didn't believe it until somebody told me, but the MVVS 2.15 weighs almost as much as a DA-50! [X(]
We still got a little time left to make our decision before the $25 off deal expires, but I'm real interested (as are you) to hear from anybody that has any experience with this plane. I'd especially love to see some videos, but I haven't seen any of those around yet.
Mark
P.S. - I heard that ground clearance becomes an issue with anything over an 18" prop too.