Our friend Bob, sent over some great detail shots of his seatpost hitches as well as other details of his trailers. A seatpost hitch must rotate both horizontally and vertically to function properly. There are a variety of ways that this can be accomplished through rotating parts or through flexing parts as is done with the Burley Travoy‘s seatpost mounted hitch.
Bob has also previously sent in some photos of his DIY dog and cargo trailers.
Keep those cycling photos rolling in!
