Plans for Building a Bicycle Trailer

Written by phillip woolgar
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Plans for Building a Bicycle Trailer
A trailer can be attached to the back of a bicycle. (bicycle image by david harding from

Riding your bike can be an efficient and cost-effective way to get around while giving you a great workout at the same time. But it's often hard to lug items around on your bike while also trying to keep your balance. By constructing your own trailer to attach to the rear of your bike, you'll soon be able to bring groceries home, haul your backpack to school, or perform any other "heavy lifting" that's eluded you in the past. A basic trailer can be designed to be a cost-effective way to meet your hauling needs.

Skill level:

Things you need

  • Four four-foot pieces of lumber, about two inches squared
  • Two three-foot pieces of lumber, about two inches squared
  • Four four-inch pieces of lumber, about two inches squared
  • Four 38-inch pieces of lumber
  • 36-inch-by-four-foot piece of plywood
  • Hammer
  • Nails
  • Two 16-inch wheels
  • Four electric box cover plates
  • Screws
  • Screwdriver
  • Two 2.5-inch tire axles
  • Two-foot trailer hitch
  • Wrench
  • Three U-clamps with screws
  • Electric drill
  • 10 eye screws

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  1. 1

    Construct a ladder frame by nailing two of the four-foot pieces of wood to two of the three-foot pieces of wood to form a rectangle.

  2. 2

    Hammer the two remaining four-foot pieces of lumber approximately four inches inside the longest part of the rectangle.

  3. 3

    Hammer your four four-inch pieces of wood, connecting two four-foot pieces of lumber on each side. Connect these pieces about one foot from the back of your rectangle and leave 18 inches between each of the four-inch pieces. Your 16-inch wheels will occupy that space.

  4. 4

    Hammer on your four remaining 38-inch pieces of lumber, evenly spaced through the centre of the frame. These will reinforce your trailer.

  5. 5

    Wrap the electric box cover plates around the outer four-foot pieces of lumber between the 18-inch space where the wheels will go. Make them centre. Place the wheels between the four-inch pieces of wood.

  6. 6

    Weld each axle onto each tire and bolt them into the electric box cover plates. Some tires will come with their own axles, in which case you can bolt them directly to the box plate, without the requirement for welding.

  7. 7

    Attach a metal trailer arm to the bicycle frame near where it meets the wheel. Weld the arm onto the box cover, or bolt it in with an electic drill. Clamp the overhanging part of the electrical box cover with a wrench, or cut it off.

  8. 8

    Bolt the arm to the front of your trailer with two u-clamps.

  9. 9

    Screw the plywood onto the frame. Add eye screws to the edges to keep your cargo in place.

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