Rediscovering the Handcart

Image: The handcart, equipped with a sail. Photo by Kris De Decker. View original image View dithered image The human-powered handcart is the oldest of vehicles, and it will likely be the last one around in the future. Of all vehicles, it’s the cheapest and least complex to build and use. It offers a large advantage over carrying a load on your back or dragging it over the ground - the even older concept of the sled. On the other hand, the handcart is cheaper and easier to use than the animal-powered cart. Oxen and donkeys eat more than humans, and they have their own will, which can work against the driver.Like any other wheeled vehicle, the handcart requires roads to drive on. This infrastructure has not always been available anywhere or at any time in history. For example, in medieval Europe, porters and pack animals were more common than handcarts because of poor roads. 1 In the West, the handcart only reached its heyday during the first decades of the Industrial Revolution, when it connected fast-growing cities to train stations and harbors. In China, on the other hand, the handcart was the backbone of the transport network for millennia. 2 Of all vehicles, the handcart is the cheapest and least complex to build and use. There are still many human-powered carts in modern society: strollers, grocery carts, roller suitcases, and various utility and folding carts. However, these modern carts are to their predecessors what birds are to dinosaurs. They are small, often with very small wheels, and we use them for very short distances, usually inside buildings. In contrast, old-fashioned handcarts were often large and had big wheels, and they were pushed or pulled on roads and over longer distances. Many crafts and professions had their own type of handcart. Image: Low-tech Magazine’s handcart.

Photo by Kris De Decker. View original image View dithered image Why I need a handcartPeople still use large handcarts in so-called “developing countries”. However, they can be just as useful again in the large cities of the industrialized world, as I can testify after using one for a couple of months. Last autumn, I received an internship application from Kozimo, who studies at the Design Academy Eindhoven. In his application, Kozimo sent a video of a large handcart he made, which he was driving on the streets of Rotterdam, the Netherlands.I have always dreamt of a handcart. I have never owned a car, and the only times I miss one are when I have to move stuff, something which has become increasingly common lately. Consequently, I proposed to Kozimo to build a handcart for me.Now, I can no longer imagine living without it. I have used the vehicle to move houses and offices, pick up materials and objects I bought online, new or second-hand, and transport workshop and event materials (bike generators, solar panels, solar ovens, books, sound systems). I have done the same for friends. During these trips, I often took home materials, furniture, or objects that I found for free on the streets of Barcelona. Image: Kozimo and Kris De Decker with Low-tech Magazine’s handcart, halfway through a 30 km trip along the coast of Spain. Photo by Linda Osusky. View original image View dithered image Unlike a van or a car, my handcart doesn’t need gasoline, electricity, or batteries, making it entirely independent from energy infrastructures. Neither do I need to pay taxes and insurance. The handcart is a very democratic vehicle. It allows anyone to carry a load wherever they want, while older, less affordable cars and vans are no longer allowed to enter city centers due to the installation of Low Emission Zones. A handcart doesn’t need gasoline, electricity, or batteries, making it entirely independent from energy infrastructures.

It would make a lot of sense to offer vehicles like this at community centers, where they are available for all neighbors to use when needed. Few people would need a handcart each day, and communal use would solve the parking problem. Although our handcart can also be parked vertically, it won’t fit in most apartments.Description of the handcartThis article will not explain in detail how to build a handcart. We want to do that another time with a simpler handcart model, because the vehicle we present in this article is not one that most people can make themselves. You need good woodworking and metalworking skills, and in fact, two people made the handcart.Kozimo designed and built the whole structure from wood, while Guilhem Senges - visual artist and one of my neighbors - designed and made several essential reinforcements from metal; the wheels, the brakes, and the handlebars are all connected to the wood structure with custom-made iron parts. Image: The underside of the handcart. Photo by Kris De Decker. View original image View dithered image Images: The front and back of the handcart. Photos by Kris De Decker. View original image View dithered image Image: The lights are mounted in coconuts. Photo by Kris De Decker. View original image View dithered image Load weight and volumeLow-tech Magazine’s handcart is 250 cm long and 100 cm wide, while the platform itself measures 210 by 85 cm. Assuming a load height of 50 cm, the cargo volume is roughly 1.55 m3 (37 cubic feet or 1050 liters). That’s two to four times the typical trunk space in a European car.

We have transported cargo that is wider or longer than the cart: a large heated table measuring 140x140cm, and several loads of wooden beams, each three meters long.The load weight is limited by the wheels, which come from a wheelchair. They can support up to 150 kg. 3 The cart itself weighs 32 kg, so the practical maximum cargo weight is about 120 kg. The loading platform consists of slats with gaps between them, making it easy to secure various types of cargo.It drives itself!Over the past few months, we’ve learned that people have many misconceptions about handcarts. For example, you may think that pushing a handcart takes a lot of effort, perhaps based on your experience pushing supermarket carts through parking lots or pulling heavy suitcases through city centers (which is how I moved stuff before I had a handcart).However, using the handcart can be so effortless - even when it’s heavily loaded - that it feels like you are not pushing at all. Once in motion, you can often guide it with one hand, and it sometimes feels like the cart is pulling you forward. It’s no exaggeration to say that pushing the handcart with a 100 kg load is more comfortable than walking while carrying a 10 kg heavy backpack. Using the handcart can be so effortless - even when it’s heavily loaded - that it feels like you are not pushing at all. There are several reasons for this light operation, rooted in physics. Each vehicle has to overcome three forces: rolling resistance, air resistance, and gravity. Air resistance is negligible at walking speed, meaning that a handcart user on flat terrain mainly needs to overcome rolling resistance. That’s the friction between wheels and road surface, a factor that’s largely independent of speed.In contrast, air resistance increases with the square of speed. A cyclist, going at 15-20 km/h, already spends more effort overcoming air resistance than overcoming rolling resistance, which is the same in both cases because both vehicles have similar wheels. In short, the handcart’s low speed minimizes air resistance, while its narrow wheels minimize rolling resistance. Image: Driving the handcart.

Photo by Linda Osusky. View original image View dithered image Second, accelerating a vehicle requires more energy than maintaining a constant speed. You only need to sustain momentum, not build it. Our handcart is pushed by a person walking, so the effort to accelerate lasts no longer than one or two seconds. In contrast, a cyclist takes much longer to reach cruise speed, and because of the higher air resistance, it takes more effort to sustain that speed. If the handcart is heavily loaded, it also gains significant kinetic energy, even at low speed. That explains why it sometimes feels like the cart is pulling you forward - because it actually is.Finally, our wheels are much larger than those used on modern pushcarts. That makes for comfortable driving on asphalt and sidewalks, which are not as smooth as airport or supermarket floors. Large wheels increase air resistance, but because of our low speed, that doesn’t matter.Handcarts and gravityHowever, an effortless ride requires two conditions: flat terrain and a well-balanced load. Both involve the third force any vehicle must overcome: gravity.Balancing the handcart: distributing the loadA two-wheeled cart becomes heavy and difficult to use when too much weight is placed on the front or back. Consequently, you need to load the vehicle so that the weight is equal on both sides of the wheels. That’s easy to check: the cart should remain in a horizontal position for several seconds without you touching it. If there’s just one piece of cargo, place it above the center of the wheels. If there are more things to carry, the total weight should be divided equally over the two sides. Finetuning the balance often involves moving a backpack from the front to the back of the cart, or vice versa. You need to load the vehicle so that the weight is equal on both sides of the wheels. A two-wheeled cart also needs additional support to keep it horizontal when parked, for instance, when loading or unloading cargo. Otherwise, the cart may suddenly flip to the other side. Our handcart carries four support beams, two on each side. When the cart is moving, they are in a horizontal position. When the cart is parked, we remove one or more beams and place them in a vertical position.