Method to create a simple bike trolley, using up-cycled materials. Easily fixated to every bike (adult size). Holes on the board help attach any kind of cargo. It’s made out of wood and simple hand tools, no welding required! Dimensions are detailed and can easily be adapted to the material available. (price depends of what materials you use, of course!).
—> Here, we build a wooden bike trolley. After some research, I wasn’t convinced by the trolley tutorials I found: either welding is required, either a lot of things are required, or the design seems clumsy.
I tried to create a trolley, which can replace the car to go to the market / grocery shopping. It needs to be built in the garden, using hand tools. No need to transport heavy cargo, but big objects (cardboard boxes, crates, wood, etc.) - Therefore it needs to be easily adaptable, with the option to fix a crate on the board. + Priority goes to second-hand materials!
—> constraints :
Here, we collect materials before adapting the plan to what we find.
At the local charity store, I found a bunch of single bed slates and a wooden board - 9€
I talked with someone who fixes second-hand bikes and sold me 2 kid front wheels - 5€
For hardware, we used whatever we had at home and headed to the hardware store to complete our set - spent around 13€
All dimensions were adjusted to the board, to avoid cutting it. Best is to adapt them according to your needs and what you have gathered.
Dimensions (length x width x thickness ) in mm/
x1 Board (740 x 400 x12 )
x 5 vertical cleat ( 708 x 16 x 45 ) (left on the drawing)
x 2 horizontal cleat (785 x 16 x 45 ) (right on the drawing)
Length was determined to match the board length, width was determined according to the wheel’s axle length ( depends for each wheel! ).
To fix the wheels, we use a similar technique than is done on bikes - using metal brackets. I bought 4 mounting brackets, which had an existing 10 mm hole ( which fits the bike axle)
To easily screw and unscrew the wheels - if you need to change the inner tube - we create a slot in the beams surrounding the wheels, allowing to access the axle (see picture)
I decided to make a grid of holes on the trolley board. It bears several functions - but is optional.
the holes allow to remove some materials - making the structure lighter. It also allows to create modular fixation systems, which adapt to the trolley’s cargo. It is also an aesthetic choice, which create coherency.
Frame is ready for assembly.
Now that the frame is done, we need to attach it to the bike.
We used a bike wheel fixation: it uses less material than fixing it to the saddle and adapts to bike which have a rear bike-rack.
Let’s start by the part on the bike. I used a piece of wood, secured by a bolt and a metal ring to the frame. (ring comes from on old bell, see picture). Some piece of inner tube serve as a buffer. The 8 mm hole with a wing nut will attach the trolley arm.
To keep in mind:
In order to make sure that the trolley stays straight when pulled, we need to raise the trolley arm to match the bike wheel axle’s height.
The trolley is done!
Make sure to tighten the nuts, to prevent vibrations.
In the future, I would like to add a small wooden stand and paint the frame to make it last!
**stay tuned for updates**
Checkout my design practice, centered around low-tech questions and awareness + accessibility concerning technology, on my instagram and my website. Get in touch at email@example.com !