Before I describe the problem I would just like to say that I'm no engineer this is my hobby, all I know is from google or if someone told me or from books. Something obvious to you may not be obvious to me. Thanks
I want to move a gear with the shaft like they were one in one moment and in the other I want to stop the gear using clutch brake while continuing to rotate the shaft.
One way to achieve this is using air bearings which would be the perfect solution if they weren't so impractical because of the required compressor and other parts.
Second solution would be to use two clutches. One to connect the gear to shaft and another clutch to brake the gear when the first one is not connected but I don't want to use more than one clutch pack because they are expensive.
Third solution is to use sync cone but that is much slower than clutch and that is why I don't want to use it.
Fourth solution which I found is using a shaft mounted brake to lock the gear with the shaft but I'm not sure if this would count as a clutch brake and if it would lower the efficiency of the system as whole.
So my question would be is there a way to achieve the problem described without using more breaks or clutches (if shaft mounted brake wouldn't count as a break then that is also OK)? The perfect solution would be a bearing which I could "turn off" and let it rotate with the shaft but I'm not sure if something like that exists.