Glider Shuttles

The p216 gun uses a variety of different p24-glider interactions, but there is one more 180-degree turn that I didn't use. Here is a period-120 shuttle that shows it off:

p120 shuttle

One can also base shuttles on reflections from other oscillators; Dean found this family of period 24+30n shuttles based on a p3 turn.

p24,p54,p84 shuttles

B35/S236 -- Cellular Automata -- D. Eppstein -- UCI Inf. & Comp. Sci.