Wanted: Bmx wheels for trailer build.

Its undoubtedly a better design for distances, however I am not shore that the one wheeled trailer is a better load bearing design though.

Also because i am going for two wheeled design i need a single arm because the twin arm does not accommodate for the twist motion that a two wheeled trailer will have.

You have totally misunderstoof what I was trying to say.

I meant a two wheel trailer, pretty much the same as your picture. But joined with a two arm connection to the bike. The "pivot" or "hinge" part will be the same as with the bob. It bends where the twin connecting arm joins the trailer part.