[quote=jonathan162][quote=rungi]I do not agree that is has no strength in the fore aft direction. otherwise a windy day would be dangerous.
but pulling it from a certain positions could damage it. I am not sure.
It would be interesting experiment to lift the entire boat from various places on the dolphin striker rod after all the nacra 5.7 weighs 360 pounds should be able to easily support that load. if not the rod should be thicker in my opinion and is an easily correctable engineering mistake.
If one hang weights from rods, which is common, how much weight is actually required to bend the rod from the center point. It is an interesting question. and can be proved experimentally and most likely well known by any metal manufacturing company.[/quote]
This is an extremely dumb argument. Edchris177 is 100% correct in describing this as a truss. Anyone who's ever taken a first year statics course understands that trusses are defined and designed in two dimensions, and pulling on it in the third dimension (in this case, fore/aft) is an attempt to rely on a material strength that that element is not characterized for. On any day, windy or otherwise, that element is in compression - end of story. Subject it to a bending moment and you're on your own. It's of the diameter and strength that it needs to be, otherwise you'd hear [i]thousands[/i] of stories about them collapsing (folding) in normal use. Fatten it up all you want, and all you'll be doing is engaging in a poorly-considered hack of the sort that just leads to [i]something else[/i] failing when you yank on it.
You're getting considered and experienced opinions here. If you're just going to blow them off, perhaps it's better not to ask the question, because that's kind of insulting.<!-- editby --><em>Edited by jonathan162 on Oct 25, 2021 - 04:22 AM.</em><!-- end editby --> [/quote]
No HTML tags allowed (except inside [code][/code] tags)
