Cook bacon and ground beef well in a 12-inch Dutch oven. Use 24 coals all on the bottom to start, then separate and place the coals as noted earlier during the baking stage. Before removing excess oil, sauté diced onion, diced red bell pepper, and diced green bell pepper with the meats until the onions and peppers are soft. Drain off excess oil. Add pork and beans, brown sugar, Worcestershire sauce, and white vinegar. Stir well, place lid on oven, and cook with repositioned coals for 90 to 120 minutes.