I want to build one too! Have you thought of the truck rear type? I would like to find a fork truck "rear" (narrow & HD) and mount a little bake master cly & lever to operate the brake on the std brake drum, with a cable drum fabbed up & mounted on the "other end" This is a way around the clutching mechanism that is on the store bought logging winches. This way when you let off the brake, the "dummy" drum would spin vs. the drum. I would think that you could "feather" your winch line in this way also.The other idea I has was to use a modern rear that has disc brakes & possible making it a dual drum, but you'd need 2 brake set ups. There is a bunch of stuff like this on u tube. The main frame/pullys/butt blate/blade is the easy part, it's the clutching action that hangs me up. Worm drive (tow truck) type winches are 2 slow for a logging winch IMHO & it seems that you have to be very careful in how you let your wire spool onto the wide drum to not pinch the cable. This is an aspect of the "store bought" winches that I don't understand how they avoid this situation. Narrow drum?