What If There Is No Gear/Tooth In The Center And Inner Lobe Of Rotary Wankel Engine?

[Herbid]

Hi All.


Sorry for my English.

I wonder If There Is No Gear/Tooth In The Center And Inner Lobe Of Rotary Wankel Engine?

Ordinary one is like this.

And the gearless/toothless picture follows.


What is the worst scenario if there is no gear?

Is the friction will be less?


Thank you all.

 

[Herbid]