Yesterday was materially non-productive but a fundamental decision was made; the bottom engine frame/tray will be removable. It allows running tubes as needed to produce a strong structure without compromising them to get the engine in and out. The tray will bolt across the base of the main roll hoop and to the rear down tubes – just like Kimini. This stuff is the hardest part of the project, where all the decisions will come back to bite me if they aren’t thought through very carefully. Everything that comes after this is icing on the cake!