Hi Jon,
In Australia my X-Air MTOW is 490kg my aircraft empty weight is 260kg
I actually purchased a 912 I wanted to install in it rather than the 582... not sure yet as it seems hard to get a 912 engine mount grrr
with a chute added I know the weight here can be more,?
the ones I seen have a mount to clamp the external bullet looking chute to the main boom then has the straps bolted to the frame... I'm sure a google search will find some extra info but if not look at the assembly manual as it shows the BRS mounting :)?
I would be very keen to see some close up pictures of your 912 mounting
a mate of mine just purchased a X-Air with a jabiru 2200 and a BRS fitted.. I will get a pic or two and show you his one, I dont think you will need to bother covering the fuel tanks as the rocket is above and outside the aircraft frame..
cheers Pete?