Originally Posted by
Symox
What has led to stiffer rims - double wall construction, carbon, eyelets?
Mainly depth and alloys. Area moment of inertia... think "I Beam instead of solid beam" - same general thinking.
Double wall was around a long time ago. It's an improvement for sure but not everything. Eyelets were really ways to give harder seats in rims that were really thin. We have moved past eyelets in most all applications. Carbon is carbon but it's not what led to the changes.
Rim depths in the 25-30mm depth range are what really started to push the industry. The depth gave you strength and pushing to lose weight helped develop better alloys to be used.