We'd love to use all Ti plate and tube, but C & A might balk at the materials bill! So instead we've used the 1.5 x 1.5 extrusion in the past. There is a considerable weight penalty once you add all the hardware to put the frames together. I like how the Huskie Brigade designed this years bot. Using the shape of the Huskie as the primary structure. I also likes the Killer Bees chasis. Standing .156 plate on edge, connecting the plate with tube is strong and light. And as their leader says "some chasis flex helps keep the wheels on the floor.." Working with sheetmatal most of the time, I appreciate Wildstang's bot as work of art. It is amazing how strong thin sheets of aluminum become once you start putting bends and beads in them. The benfit of the extrusion is the rapid build and ease of maintenance once the bot is together. The trick now, is to use the modular concept for ease of assembly and modification, making the components durable enough for the application, but light as possible....I still want an all Ti bot....
