Originally Posted by
Yellowbeard
Other way around, but I'm referring to the interpretation given in The Bicycle Wheel; top spokes prestress the bottom spokes in order to GIVE them strength in compression, same way steel reinforcing bar can let concrete members take loads that are effectively tension loads. Only the bottom few spokes see significant changes in tension when the wheel is loaded. Either way, pretty sure it's a matter of semantics because it's the balance of forces that are important, and without the other 16 spokes the wheel isn't going to be a wheel.
There is no force being pushed down on the bottom spokes. the strength comes from the top and the shape of the rim.