I’m trying to sweep asymmetrical shapes along a circular axis. I’ve tried many things such as splitting my shape into 2 closed curves, many different rails and altering my shape slightly.
I’m struggling to find a fix and would appreciate any advice.
As you can see in the images above, the wheel rim remains planar on its edges but the curves leading up to said edges differ on each side, this is to create the assymetrical rim for maximum surface area for the spokes to rest upon. My problem is that to maintain the shape i need to use the two waved rails, leaving me with nothing to maintain the outer shape, (the outer shape follows the inner waved rails)
The white text inside the red background in the first image is BS. The bike spokes take less stress when they are mounted in the typical non-linear fashion, meaning they act as springs due to the slight bending of each spoke caused by the vertical heads coupled to the inclined spokes. The aforementioned bending generates a natural spring effect, which is crucial while riding on an uneven terrain. The spring effect greatly reduces the stress as the spokes will take the hits gradually. The design showed in the photo will directly pull the spoke which leads to much higher stress concentrated to the thread. It’s the spoke’s thread that fails 99% of the time. Broken spokes are rarity.
That’s actually really interesting. I’m assuming the change in angle isn’t great enough to nullify the spring effect. I don’t actually know all that much about bikes, I’m a prod student re-modelling an existing bike for a project and using the opportunity to learn. Thanks for the extra info its pretty cool.
The idea behind keeping the spokes slightly bent is to provide spring-effect that enables a certain amount of vertical and sideways flexing of the entire wheel, thus reducing the load taken by the spokes as the forces are spread out gradually. On the other hand, totally straight spokes will take the impact forces directly, which is why they must be thicker or made from a stronger (more expensive) material to be able to withstand the sudden pulling effect.
