RE: HK90mm viper mw44 conversion she Snaps!
It is worth having a look at the videos of several EDF HK Viperjets crashing. This one has a 90 deg snap after takeoff.
[youtube]http://www.youtube.com/watch?v=Z7Lu4E21alQ[/youtube]
Maybe the plane is just not a very nice flyer, but looks great. The size is a bit marginal for a MW44 especially if the rib profiles are not correctly chosen.
John