I bought that download too. I’m sure it’ll be useful at some point. What is slightly aggravating is that the parts were obviously modeled in SolidWorks, so why not offer a SolidWorks or .stp download. I’d have paid a little more for that, but now I just have to model the parts all over again . . . in SolidWorks!
In the end I think the design of engine mounts are going to be driven by the type of AV Mount I select ( does anyone have any recommendations) and the spacing off the firewall, driven by the balance of the lighter engine. I’m still not sure if the effect of moving CofG a few points rearward would be a positive or a negative. I think negative as pilot, passenger and ‘luggage’ are all aft of the CofG, it may limit the max load capacity.
Then there is the question of the ‘thrust line’. I think I’d like to raise it (from the O-200 WL position) for better packaging, but I’m not certain yet. Would raising the thrust line 1”- 1.6” create handling issues? I don’t know what the aircraft vertical CofG height is, maybe it’s in some of the documentation . . .
Lots to figure out!