{{Projects infobox
|image           = Cargo-trailer.png
|designers       = [[User:Tim|Timothy Schmidt]]
|date            = 2021
|vitamins        = 
|materials       = 
|transformations = 
|lifecycles      = 
|tools           = [[Wrenches]]
|parts           = [[Frames]], [[Nuts]], [[Bolts]], [[End caps]], [[Plates]], [[Wheels]], [[Axial bearings]], [[Keyed shafts]], [[Wheel hubs]], [[Shaft collars]]
|techniques      = [[Tri joints]], [[Shelf joints]], [[Wheels and axles]]
|git             = 
|files           = 
|suppliers       = 
}}

[[Category:Projects]]
[[Category:Transportation]]

=Introduction=
A bicycle trailer is a motorless wheeled frame with a hitch system for transporting cargo by bicycle. It can greatly increase a bike's cargo capacity, allowing point-to-point haulage of objects up to 4 cubic yards (3 cubic metres) in volume that weigh as much as half a ton. 

=Challenges=

=Approaches=
==Cycle trailer==
<gallery>
Cycle cargo trailer.jpg|Cycle cargo trailer
Wheel adapters.jpg|Wheel adapters
Rear wheel assembly.jpg|Rear wheel mockup
</gallery>
* side bike attachment w/ [https://www.amazon.com/Sydien-Bearing-M8X1-25-Economy-Lubricating/dp/B07YXM56MM/ Right Hand Rod End Bearing M8X1.25 Female Thread]
* bolt-on pneumatic utility tires @ below deck level for true flat bed loading
* expanded mesh bottom w/ tiled coroplast for all weather drainage and easy strapping
* plastic fencing + coroplast sides
* central beam, braces at front, rear, wheels.  corner posts w/ pvc flag pole
* modular totes

==Truck trailer==
<gallery>
Truck cargo trailer.jpg|
Front spindle.jpg|Front spindles
</gallery>

==Tractor trailer==

=References=
* [https://en.wikipedia.org/wiki/Trailer_(vehicle) Wikipedia: Trailer]
* [https://en.wikipedia.org/wiki/Bicycle_trailer Wikipedia: Bicycle trailer]
* [https://www.donkeytrailers.com/ Donkey Trailers]