Two spars do not make a wing. Now we need some ribs – and quite a lot of them. The very first wing rib has just been positioned between the spars. Unlike the wing ribs of the N-20.1, which were cut from 10 mm thick Okoumé plywood sheets, the ribs of the N-20.2 are made from a plywood web with laminated spruce caps. The first step is to make the spruce caps. For this, a stack of 5 mm thick spruce boards is glued together with Aerodux and then cut to the required dimensions. Me

For the first time, all the components manufactured to date have been assembled together. The fuselage, complete with the vertical stabiliser, is mounted in the assembly jig, and both wing spars have been successfully inserted into the fuselage. Reaching this important milestone was only possible thanks to the perseverance of a dedicated team. As is often the case with projects of this nature, not everything went according to plan. It was only during assembly that we discover

Transport der Holme Today marked another major milestone in the project: the two wing spars were transported from the original workshop in Bleienbach to the new workshop in Nesselnbach. For this exceptional move, a truck and low-bed trailer were used, generously made available by Hanspeter Meyer from the Giezendanner Collection. Despite the impressive size of the trailer, the two 7.6-metre-long spars occupied almost the entire loading deck – a truly impressive sight. Once

During one final, highly focused work session, the closing plywood skinning was fitted to both wing spars. At 8 mm thick, these plywood strips proved considerably less cooperative than their thinner predecessors. The centre section therefore had to be pre-bent on the original spar form while damp and then allowed to dry completely before installation. The surfaces of all internal cavities were carefully sealed with varnish by experienced hands beforehand. The same applied to

At long last, work on the wing spars is moving forward again. The investigations and approvals required for the use of an epoxy adhesive were extensive and ultimately resulted in a 26-page report. Anyone interested in the finer details is welcome to download and study it using the link below. Last week, we received positive signals from Bern on our report, allowing the suspended work to resume. Naturally, we were already waiting in the wings. The individual plywood panels f

At the moment, I’m spending most of my time doing calculations, building test specimens and test rigs, and running tests — you know, the fun stuff. The pilot harness attachment has now passed its ultimate load test (finally). It’s bonded to the fuselage structure and, just in case that wasn’t enough, also bolted on. The calculations already showed that either the bonding or the bolts alone would be perfectly capable of taking the expected loads. But obviously, that wasn’t qui