not while its attached to the hub, turning it while its a part of the hub will either loosen or tighten the bearing adjustment. I'm sure you could fashion a lever of some kind out of the brake arm itself though.
You can fix the lever arm to the front fork and use a cable and chain setup to rotate the sprocket to brake. I have seen pictures of bikes with this setup.
You can fix the lever arm to the front fork and use a cable and chain setup to rotate the sprocket to brake. I have seen pictures of bikes with this setup.
This has been done a few times on here using a coaster on the front, I believe theres a good example in one of the past build off threads from the past couple years. Just be careful not to lock it up and flip the bike :wink: