- Jan 13, 2011
- United States
I'm speaking from a US perspective.What do you do of you don't have access for AN Bolts reasonably priced?!
I think the answers (for Europe and elsewhere) are inherent in the homebuilts that one sees at the RSA and LAA rallies. More wood, for instance. Perhaps more rivets? Gesipa for example seems to have production in Belgium and Greece, but in my view pulled rivets are not a good solution for the relatively heavy sections the Affordaplane uses. Gusseted thin wall aluminum tube will drive up your parts count, but may better suit your supply situation.
I'm curious what all the Russian and Ukainian trikes use for hardware...the nice thing about AN hardware is it's mix of strength and toughness and overall quality (lack of forging defects, good dimensional accuracy). Other common fasteners available in the US (most of which comes from the Far East) lack this "value", you either get soft crap that is resistant at least to fatigue and shock, or brittle as glass crap of high strength. That's why you often hear in US homebuilding "Only use AN hardware". Perhaps ISO or BS or DIN metric fasteners of suitable strength and toughness ARE available and affordable? And thus an AN4 becomes a grade 10.9 or 12.9 M6x 1?
One dodge sometimes used in automobile racing when AN hardware is not available is to use socket head cap screws. They TEND to be of higher quality and mechanical properties that run of the mill Hex Head fasteners.