One spoke vs. many spokes...

[exnihiloest]

Try wind-power- It definitely works, and are for free

The (very big) problem is: it needs wind! 

[Low-Q]

A rather bigger problem is that all generators need energy input, not only from the wind - if you happens to be in an area with wind.
The biggest problem is that a wheel we are discussing here will never work:)

[iacob alex]

.....or many spokes ( wheel ) vs. one spoke , if we start with a " dilemmatic " test  of a wheel concept :
     https://youtu.be/Rgp6gcSaF2Y
.....but we play two opposite (variable ) spokes . of the same arrangement , as a common lever ...or a single variable spoke/arm as a proposal of :
     www.geocities.ws/iacob_alex/Some_Drafts/text028.JPG
     Al_ex