Cart Bike

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About: I like making things out of items that would have otherwise been discarded. Check out my other projects!

Intro: Cart Bike

Combine a derelict shopping cart with a bicycle for a ride with ample cargo capacity. This is a nice way to save a shopping cart and a bike that might otherwise end up in a landfill. It is quite the head turner but not a good corner turner.

Any mention of this project must provide a link to www.zieak.com with credit to Ryan McFarland.


Step 1: Gather Materials

You will need:

A bicycle
Shopping cart
Socket set
Hex key set
Dremel tool
Utility knife
Zip ties
Screwdriver

A note on shopping carts: Please don't steal them. This one happened to be floating around our downtown area for over a week before I grabbed it. The bicycle is almost ten years old and still works fine but I just bought the bike shop in town so suddenly have access to plenty of cycling materials.

Step 2: Remove the Handlebars and Shopping Cart Handle

Use the allen key set (probably number 6) to loosen the stem bolts on the bicycle. Use the socket set to remove the shopping cart handle. Ideally the diameter of the cart handle is close to the handlebar center. As you can see i was able to just bolt the handle right in as a replacement. Remove the front wheel. You also can remove the front brake.

Step 3: Install the Brakes

In order to attach the brake i had to cut off the plastic handle. I used a rotary tool to cut a line down to the metal and then used a chisel and utility knife to peel back and cut off the plastic handle. I then used a screwdriver to slightly pry open the brake lever and gear shifter enough to slide it on. I also slid the handle grip on since the end had already been cut off for the bar ends.

Step 4: Stabilize the Forks

The bike needs to articulate a little for the irregularities in the road. Leaving the forks hanging free makes the bike prone to leaning over when you turn. Just using a few zip ties to connect each fork to the shopping cart frame helps stabilize the bike and prevents it from falling over. I would like to find a more permanent solution. It needs to allow the fork to swing forward and back but prevent too much side to side sway.

Step 5: Test Ride

The front brake lever won't be useful unless the shifter is attached to it. I will modify the left handlebar for the shifter when i find one without a brake lever attached.

On test rides it does not corner well. Steering is very wide turns and sometimes the cart teeters on two of the wheels on one side. I'll definitely be playing around with the details. This will make a great rig to make trips to the post office for the bike shop. The cart bike will be a great addition to our town parades.

Please note that this is not the first cart bike. See some of my inspiration here and here.

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348 Discussions

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ntheisen

8 days ago on Step 5

The cart you procured was not free. It had a store name on it. They all do. You could have gone to the store more than likely a LOCAL store and ask if the wanted it back. Not nice... Also you know that the project is horrible for a front end. A simple rear attachment would be better. Any place that 'loses' carriages passes that back to the consumer. More money for you I hope.

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sethaitch

7 months ago

That is pretty sweet! I got me a shopping cart at aldi for only 25 cents!

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Gavbpr01

1 year ago

You can use the springs from an old washer!

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silm

1 year ago

very funny unique cart bike idea

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undanganpernikahan

1 year ago

Well, I need to roaming downtown area first, to find abandoned shopping carts.

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pattiemelt

2 years ago

Good idea, but using stolen parts is not a good idea. Even if you 'find' a shopping cart, the vast majority of them have identifying labels (i.e. handle wrap & seat flap) so they can be returned to the store. Using them is the same as stealing them off the lot yourself.

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JacobK41

2 years ago

I built one a few years back, but i didn't secure the front forks. I ended up face first in a shopping cart haha

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mdbuckley

2 years ago

I love the idea, but I'd only recommend this build if you like skin grafts and cincussion. The handlebars and are not designed to take the wight the front wheel carries. If the the forks were solidly connected to the shopping trolley it would be great

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Msfan59

3 years ago on Introduction

I think that if I were to make this I would modify the wheels to be a little bit larger like wheel barrow wheels that air up to help on the pot holes and the ease of movement. But other than that this is an AWESOME idea.

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aattura1

3 years ago on Introduction

Big Bad Baby Twinkle
<-- sez "This is a GREAT Kat Fud Transporter!"

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YaënD

3 years ago on Introduction

I have to do this to go shopping with my son Bat-Boy

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araiza444

3 years ago on Introduction

It seems to me that finding a cart that is not broke would be the toughest part of this build : ) I would totally go shopping with this thing...

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Doctor-X17

3 years ago on Introduction

I laughed pretty hard when I saw this XD but if you need to transport things, I'm sure this does the trick!

I'm curious, how is the ride with this? Is it smooth, or really bumpy since the cart has hard wheels?

A suggestion: You might get a better turning experience if you get a cart with free-turning wheels in the back, like at Ikea. I love those carts, they can go any direction, including sideways!

Oh, I love your furry assistant. I know my kitty is always very helpful :P