Prototype carrier turns a bike into a cargo trike


May 28, 2013

The S-cargo is a prototype carrier that converts a conventional bicycle into a cargo tricycle

The S-cargo is a prototype carrier that converts a conventional bicycle into a cargo tricycle

Image Gallery (3 images)

If you want to haul gear on your bicycle, but you don’t want to buy a whole dedicated cargo bike, then you might like Israeli industrial designer Ofir Yadan’s S-cargo carrier. The two-wheeled device replaces a conventional bike’s front wheel, temporarily converting it into a stuff-haulin’ tricycle.

The S-cargo (not to be confused with the Nissan van of the same name) was designed as Yadan’s graduation project at Jerusalem’s Bezalel Academy of Arts and Design.

In its current prototype form, it features a custom backpack-style compartment that can be stuffed with things like groceries. That pack, however, could be interchanged with other planned “add-ons” such as racks, boxes or even a child seat. Yadan has also suggested that a motor and battery could be swapped in, thus turning the bike into an ebike.

To put the S-cargo on the bike, you just remove the bicycle’s front wheel, install the carrier’s mounting system in the drop-outs, then slide in the carrier and lock it in place. You then just ride your bike more or less as per normal, although presumably without the benefit of a front brake.

When you get to your destination, the carrier can be quickly removed from the bike, and pulled along by its handle like a cargo dolly. Should you wish to set it aside, a spring-mounted kickstand can be used to prop it up. The parked bike remains upright, meanwhile, as a bar that's part of the mounting system swings down to act as a stand.

There’s no word on when or if we’ll ever see a commercial version of the S-cargo, although Ofir states that he is continuing to develop it. The prototype can be seen in use in the video below.

Source: Coroflot via Bicycle Design

About the Author
Ben Coxworth An experienced freelance writer, videographer and television producer, Ben's interest in all forms of innovation is particularly fanatical when it comes to human-powered transportation, film-making gear, environmentally-friendly technologies and anything that's designed to go underwater. He lives in Edmonton, Alberta, where he spends a lot of time going over the handlebars of his mountain bike, hanging out in off-leash parks, and wishing the Pacific Ocean wasn't so far away. All articles by Ben Coxworth

It looks adaptable for a golf bag and with ebike capability I can see myself on the course already.

Tim Riley

Picture 2 clearly shows it has twin disc brakes on the front.

Gary Bonney

It does show twin disks on the front, but what happens to your original disks? It's not easy to swap over brake lines, whether they're cable or hydro. Smart idea if he can work out the details.


Neat! A sort of upmarket - and modernised, thankfully - version of the old unstable bike shopkeepers used to send off with the delivery boy. Make it motorised from the start, the decreased groceries payload would be a good trade-off.

The Skud

You are going to kill a lot of rear rims riding that.


Gary - there are brake discs attached to the hubs, but no working brakes. It is missing calipers, cables and levers.

He has obviously used wheels from a recumbent and left the discs on either for looks or in hopes of one day integrating a braking system. I don't think it would be too hard to do really, maybe have a brake lever attach to the handlebar with a quick-release mechanism.

I think on the whole is it a very clever bit of design though.


I really like the thought that went into this.... I'd buy it.

Racqia Dvorak

This is over-engineered — with that size of rucksack it would be much easier (and cheaper) just to keep it on your back where it belongs, or investing in a nice big courier bag...

James Greig

Thank you all for your replays. I will try to answer some of your Q's,

this prototype was build as my graduation project, so the time frame was too short to complete the engineering development. the braking system was not competed at that time, but since then I've developed a solution for the braking, that will be able to disconnect in the same act of disconnecting the cart itself, it's not too complicated.

I found the steering and handling good at low- medium speed, and now I'm working on improving preferences and developing a child-seat configuration.

Thank you, Ofir Yadan.

Ofir Yadan

This could make a nice child carrier too.


+1. Looks like a very good idea for when we occasionally need to carry bulky stuff instead of renting a car.

Freyr Gunnar

What are the cetrifugal effects of having that much extra weight forward of the steering centerline?


Even if the front wheels weren't so removable it'd be a nice looking leaning trike conversion. Obviously you'd want to get the front brakes worked out, but once that's done it'd be a great mod to a bike for those of us that ride in crappy weather and want a little more traction.

Keith Lamb

Noomad in Spain already makes something very similar. Comes with brakes and the brake lever etc. - Ready to go.

Cora Muis

It's a great idea for those with balance limitations, too!

Cora Muis

The electric propulsion option would be a good idea . . . especially on a bike with no pedals! ;-)


Great Idea Ofir!,

Do not let the whiners bother you. Every new product has a starting point and this is a pretty good start. I would suggest a permanent conversion but with somewhat larger wheels, both with hub motors and probably best if independently sprung. An all year round E-Bike solution is well within sight here and probably at an attractive price point as an aftermarket modification.


This looks like an expensive solution to a problem that has been solved many times. I think a bike trailer would carry more, for about $2000 less than this would cost, plus you could easily detach the trailer for use as a handcart for making deliveries and pickups, and use the bike without the trailer.

Michael Crumpton
A large basket would work out better than a bag. Bags wear out all too easily. I use a bicycle trailer and normally haul about 50 lbs. of groceries at a time but am equipped to haul a bit over 100 lbs. if need be. Your design looks like it would be easier to pedal but I would leave it attached at all times and would not need the release feature at all. I also have a project with a bike steering neck with the forks removed and a piece of angle iron welded horizontally. It is designed in such a way that I could drop it on the rear edge of a grocery cart and strap it down and use the cart as a front end. The cost of doing that was the cost of a single piece of angle iron twenty inches long. If i got serious about that I would get rid of the grocery cart wheels and attach much better wheels to the cart. But if one only shops a few blocks away it is a super easy way to get by without spending money at all. Jim Sadler
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