While I’m admittedly a slow builder who likes to take his time and doesn’t too often jump in with immediate solutions to specific problems when people ask on forums, occasionally it still happens when something is pretty obvious and I can exploit my limited experience in these matters.
Such was the case a while ago when someone had bought commercial MOC instructions that just didn’t live up to the expected standard. I believe it was some sort of Star Wars TIE Fighter and as some those vehicles so often do, it used a triangular/ hexagonal arrangement of the wings/ cooling panels. This was done very flimsily (which to me proves that the original creator never actually had built a physical copy and only relied on digital creation or else he’d have noticed this easily) and needed some serious changes. The person asking had come up with an own solution that didn’t work that well either, so I spent an evening figuring things out using a mix of Technic pieces and conventional stud-based construction.
I’m not claiming it’s perfect and by all means it’s more an exploration of specific construction techniques, but it should meet the following criteria:
- It’s perhaps as narrow in diameter as it can get under these circumstances.
- It’s relatively stable compared to stud-only methods.
- It’s expandable by inserting more elements and swapping out the axles, so you can in theory create some pretty long segments just by repeating bits.
There are some downsides, too, of course, with the biggest likely being the extensive use of the half-width Technic liftarms. They tend to be more expensive on Bricklink as they are simply not found in as large numbers in commercial sets. I was just lucky to have them in my repository. Anyway, check out the small instruction booklet and make up your own mind. This will also be linked via my Rebrickable page, so you should be able to conveniently access the inventory. The crazy colors are just for distinction. Use whatever fits your type of model or whatever you have at hand on your own projects.