Question

Can you explain in more detail how the wheels are attached?

Community Answer

The wheels are attached to those metal plates by sticking the axle through a hole in the plate (which you have to drill). They are then secured with the nuts that come with the wheel. Then the plates are screwed or bolted onto the wooden frame. Because of the confined space where the wheel sits, this may being really awkward. So my plan is to cut a slot in the plates so the axle can slide in/out (on a bike, these are called "dropouts"). I also plan to use quick-release "skewers", since I also foresee having to load this trailer into the car, and I'd prefer to be able to remove the trailer wheels easily.