A biplane powered by a steam combustion rocket engine isn't too crazy is it?? This was a really fun MOC to build. I kick myself for not organizing my Legos before... building is so much more enjoyable when you're not hand surfing through a huge pile of all your black Legos.
I like the sleek look and you did a great job with the detailing. Also, amazing use of that gantry piece. A bit more flame coming out of the rocket engine would be nice, but I can see how that would be difficult to build. Awesome job.