I’m not claiming to be a scientist, but I don’t get why people don’t understand this. Listening to people act like Carbon Fiber has this spring like characteristic is just goofy. Have you picked one of these shoes up and tried to bend it? I mean...really? You can’t! If you do get it to bend you have a very serious chance of cracking the plate. The adios pro doesn’t even really use a plate where bending would occur and is stiffer than hell with the rods. Those rods do not move at all.
I’ve said this before on here, there is a reason carbon fiber is used in auto and plane applications. It’s due to its rigidity and weight. In other words it’s really really stiff and light as a feather in comparison to steel. Don’t think I’m telling you the truth? Just look at the mustang GT500 alternate wheel package. You can actually buy carbon fiber wheels/rims that save a ton of unsprung weight and have superior stiffness to “normal” wheels. These wheels are part of a carbon fiber package that cost 18.5 grand. So to look at these shoes and ask why they are “expensive” really shows ignorance of carbon fiber in general. Also the fact that Ford and Ferrari are using carbon fiber as material to make wheels/rims is proof to its rigidity.
Like stated before, carbon fiber is used to give the foam a certain form and stiffness. It’s a combination of the two (plate and foam) that make these shoes so effective. So many manufactures got the formula wrong when trying to match Nike initially. Heck Nike got it wrong with the Zoom Fly (SP) in my opinion on the initial outset of designing these shoes. Those shoes are super stiff and the foam isn’t responsive enough to make the shoe work correctly for many people. The cushlon foam just didn’t work right with a plate.
Anyone that continues to argue this angle really isn’t looking deep enough into it. In fact they are doing the exact opposite and just spewing short sighted nonsense to be completely honest.