This made me think that it might be worth trying to construct a (13,1)c/31 caterpillar once again.Ivan Fomichev wrote:A more serious obstacle, in my opinion, is that there is still no known way to adjust tracks arbitrarily -- ironically, for (13,1)c/31 it's trivial.
You can find many (possibly all) known components here.
Good luck! I really hope somebody will synthesize the helix and build the spaceship!