Step 14: Making a crank to run the rollers
I fashioned a handle for this crank using a piece of scrap wood that was laying around. On one end for the handle part I put a big 5/8" x 8" bolt through it (with some treadlocker to keep the nut on). I drilled a hole in the other end of the crank-board and put it onto one of the shafts that was sticking out farther than the other . I intentionally left one shaft longer than the other to keep one sprocket from hitting the other one when it was rotated. I attached the crank-board to the shaft with two nuts that I used to pinch the board tight.
I connected all of the bike sprockets with a bike chain that was sized to fit. The chain runs through the sprockets and around a tensioner (which is a bike sprocket on a spring) that was taken off the back of the 10-speed donor bike that contributed all the parts. The tensioner was just bolted to the side of the mash-box. With all these parts in place, my crank mechanism was ready for apple season.