Crabs are decapods and use 8 of these legs to walk so imho they are hard to compare to a tripedal. It could walk like a cangaroo, but with the current torso to leg ratio it seems like it would topple over if it tries that. It would need bendable joints and bigger legs. So a step could start by shifting the weight to the hindleg, then taking a step with the front legs. Depending on leg design this could be leaps instead of steps.
Thank you for sharing this. I think it is a very interesting walking apparatus. Especially because it is so rare. There are no tripedal animals known to us and most people just stick to what they know and don't trigger such excitment in the people that are looking at their art.
All valid points and I agree the upper legs/core area could use more parts to show that they could articulate in more directions. When it comes down to it I often have to sacrifice some practicality for a certain look. If his legs were significantly bigger he'd lose the top heavy V shape, and if I added a bunch of torso articulation there'd be nowhere to show the engine. Also depends what kind of style I'm going for, if it's more on the realistic side then practicality is more important. I don't go for that as much because there's less room make something unique.
I'm glad you found it exciting and thanks for the comments.