Whirwind reel loading mechanism (Patreon)

When I saw the reel weird hub, I really wondered what kind of holding mechanism worked with that on the original drive. We asked the CHM archives to let us inspect the Raytheon drive we have. Little did I expect this triangle hub and clever locking bar! Like many data recorders, the drive has the two reels mounted on top of each other. Here we have already removed the bottom reel, and I demonstrate unloading and reloading the top reel.