Do keep in mind, that where the inverted fork will tend to flex is side to side, fore and aft on them is actually typically stiffer than traditional style fork assemblies. I cant wait to try out that fork next year!
A steel bar,likely would have succumb to plastic deformation, versus the elastic deformation undergone by the aluminum. meaning; A steel bar would have remained bent downwards after the initial force applied. I love engineering!
I guess the point I was trying to make was that had he been running a steel bar his hands would have been down by his f. axle vs. where they did end up, unless he's running a Renthal mx bar,he likely exceeded that bar's expected yield by 10x
oh ya for sure. i've see aluminum shear though. that is pretty rad photo. i wonder how close he was to snapping them from a physical properties sort of standpoint.
For sure,To "find" a steel bar with comparable strength, it would probably have to be a solid bar(boat anchor!) or some kind of hardened tool steel,making it no longer cost effective. I suspect in the next 5-10 years however, we may start to see more steel components with the advent of "nano" technology, seeing how aluminum is extremely expensive to produce and there seems to be tons and tons of steel out there already., Keep shreddin' bro!
Never the less, rampage seems to be a exceptional proving grounds for components and riders alike. Again, Congrats to Cam Zink, and all other riders for putting it all on the line!
@MattHoffman how may a steel bar need to be solid to equal the strength of an aluminum bar, being steel a material with a yield strength higher than aluminum?? your right that it will be heavier, BUT, a steel of the same dimensions of an aluminum one will be far more strong. Your talking out of your ass about something you dont really know.
Do the math buddy, just because you can use a drill press does not mean anything, oh and if you ran a good fork in the first place you wouldn't need to change everything, get bent!
Steel and high grade aerospace aluminum both have a very similar yield strength. it's the tensile strength on steel that is a bit higher. Which means a steel and aluminum bar would've both bent.