Here I present an online program I have written for generating loops out of Lego elbow pieces. Elbow pieces (part #25214) are used in many Lego Technic models as a decorative part to create tube like structures. With this program you can search for loops within different sized spaces and set the number of elbow pieces to be used. It supports both loops and dual axle mounted solutions. You can download your solution as an .ldr file. Can you find a record number of elbows to fit into a space?
To try the program go to (desktop browsers only): https://technicbrickpower.com/tools/technic_elbow_art