Category Archives: Pimp My Ride

Build Your Own Custom Mundo!

So you want to build up your own Yuba Mundo Cargo Bike?  

Here’s a post to help you cover the basics.  

Sweet Custom Tangerine Yuba Mundo Cargo Bike

Sweet Custom Tangerine Yuba Mundo Cargo Bike. (With Monkey Bars, Bread Basket, Stand Alone, etc.)


The foundation of your dream ride!

A custom Yuba Mundo is a great way to show off your personal riding style, from the look to the ride.  Here are some basic components to consider when building your Mundo:

– Yuba Mundo Frameset 

 – Rear Wheel – The Mundo’s rear drop-outs are 14mm, not 3/8″ (10mm).  So, you’ve got some options here:

  • Purchase a Yuba Mundo Rear cargo bike wheel.  This is the easiest and likely the cheapest way to go unless you already have a rear wheel.
  • Purchase a set of Yuba Axle Adapters.  These fit over the round axle and space a 3/8″ wheel in a Mundo dropout.
  • Find/Build your own wheel based on a BMX-style 14mm axle.  (You’re on your own here.)

    14mm to 10mm Axle Adapters

    14mm to 10mm Axle Adapters

Yuba Seat post (it’s an unusual size at 31.8mm x 500mm, so its easiest to get it from us)

You can purchase a seatpost from Yuba. Our seatposts are 500mm.  This is needed if you are over 6-feet tall.  Otherwise, you can purchase a 31.8 x 350-400mm from most bike shops.

Wheelskirts (if you ever are going to have children ride on the back, they’re required.)

We also strongly recommend these accessories:

– Utility deck  — You can make your own, but in case you’d rather not…

– Stand-Alone Kickstand — Nobody makes a stand like the “Stand-Alone”.  This kickstand ROCKS!

– Deflopilator — Keeps the front wheel straight when the bike is on the Stand Alone

And one more thing:
Mundo Chain (156 links!)

(Of course, there’s always the full line of Add-ons to trick out your new custom Mundo, such as the Bread Basket and the Go-Getter Bag.)

Custom Mundo FAQs

Rear Hub Spacing: 135 mm

Maximum Tire Clearance: 2.15 in (with standard drive train).


When you’re done, we’d love to see a picture of your Custom Mundo, either by email, @YubaBicycles on Twitter and Instagram, or Facebook.

Transporting Multiple Bikes by Mundo

Periodically we repost a tutorial or other useful content from Yuba riders. This tutorial, from Gray Harrison of the Me and the Mundo blog has some great ideas about how to transport multiple bikes by Mundo. Enjoy!

There has been a lot of interest in the posting about carrying bikes on the back of my Mundo, so I’ve decided to put up some more details and a “how to” on the process.

The original inspiration for trying this out was that the Fort Collins Bike Library needed to move about 65 bikes from their storage location to the downtown library kiosk.  New Belgium Brewery was hosting a meeting of folks from around the country to plan this summers’ Tour de Fat festivities, and all the visitors needed bikes.  The plan was to ride the bikes from storage to the library, and then walk back to the storage to pick up another bike.  Repeat until done.  I volunteered to help move the bikes, but not being a fan of walking I figured there had to be a better method, and thus the Mundo Multiple Bike Loading System was born.

In front of the Bike Library
Carrying 2 bikes at a time.

The basic idea was pretty easy: get a couple of v-shaped bike trays, such as those made by ThuleYakimaRocky Mounts, mount them to the Mundo’s outriggers, and start moving bikes!  Sounds easy, and as it turned out, it really was.  A few technical details needed to be worked out, as I will show you, but it didn’t take long to figure out.

Here are the things you’ll need:
(2) full length bike trays
(4) 1″ hex-head stainless steel machine screws with the same diameter and thread pitch as the ones that come mounted in the Mundo’s outriggers.  (The stock screws might not be long enough to go through the bike tray into the fitting).
A drill
A measuring tape (to measure exactly where to drill the holes in the trays).
Some old carpet or other material to protect the frames where they contact the Mundo in transit.
(2) Yuba 3 meter Cargo Straps (or similar).
(1) hour of time to do the first installation. (Note: once everything is measured and drilled, the process of removing or installing the racks takes less than 5 minutes).

Detail 3
Here’s what the final installation looked like.  The trays are different styles only because they were the only 2 available at the time.

The most expensive part of this project were the 4 stainless steel machine screws, as the used bike trays were donated by the Fort Collins Bike Co-op.  Getting a tray or 2 for a project like this could be a bit of a stumbling block, but if you keep your eyes open you can probably find one on craigslist, your local community bike shop, or even at a metal recycling center.

Although the original inspiration for the project was a short-term job, my long-term objective was to have a way to easily carry one or more bikes with the Mundo.  I have tried towing bikes, and it is not an ideal way to transport more than one bike, or even one bike over longer distances.  This setup with the trays allows me to, for instance, carry my mountain bike to the trailhead (about 10 miles) using the Mundo instead of a car.  It’s a great way to get to and from the trails without having to ride my mountain bike on the street for a fairly long distance.  The Mundo’s electric assist makes it super-easy to get up to the foothills quickly where I can then enjoy the amazing Colorado singletrack.

In Action 1
carrying the mountain bike to the mountains.

Here are some more detailed pictures of the installation process for the trays, and for those of you who might need to transport 3 bikes, I think there is a way of mounting a 3rd, short tray on the top of the cargo rack.  You’d have to have the kind where you remove the front wheel, otherwise the bike would stick out too far and you might have a problem with too much weight hanging off the back of the rack.

Detail 5
The outrigger with one screw removed in the front and rear to allow the rack to be installed.
Detail 9
Detail showing the extra-long machine screw needed due to the extra thickness of the rack.


Detail 7
Lining up the hole drilled in the rack with the outriggers’ screw hole.  Note the slot in my wood deck for the Go-Getter bags’ strap to go through.
Detail 10
Here is the tray on the other side showing the holes drilled to match up with the existing screw holes in the outrigger.
Detail 11
A view from the top, the rear screw is in, the front has not been attached yet.  Also note the piece of old carpet around the top rack to protect the bike being carried from rubbing against the steel of the Mundo.
Detail 15
As long as the tray is mounted at the correct angle you should have plenty of room to pedal.  The exact placement of the tray, and where to drill the holes was the most critical measurement during the installation.
Detail 19
Here’s the mountain bike mounted on the Mundo for transport to the trailhead.
Detail 23
Here’s a closeup of how to strap the upper part of the bike to the rack of the Mundo.
Detail 21
Another view of the strap holding the bike up.
Detail 22
Using the wheel straps that come with the bike tray to hold the wheels in place.
In Action 2
And hey, I’m off to the mountains!

Thanks for taking a look, and feel free to contact me if you have any questions about carrying bikes on your Mundo.  Once the system is in place it’s easy to put on or take off as needed, and as you might expect, it gets a lot of comments as you ride through town.  And if you want to see a short video of the bike carrying a bike, go to my vine page.  If you need to carry even more bikes, you could always build a custom trailer such as this one I recently saw at the Bike Library, built to carry 5 bikes!


Making a Trailer for a Boda Boda

 Occasionally, we host a guest blog post about how to do something terribly interesting or useful with our bikes. This guest post is from Tim Schaeffer, a dog-lovin’ Boda Boda rider in Colorado,  teaches us how to repurpose a kid trailer for hauling cargo, and how to attached the trailer to a Boda Boda.

Although I have managed to haul a respectful amount of gear on my Yuba bicycle alone, I wanted to have the option to haul even more when necessary.

My goal was to complete the project with respect to the following:
·         a small budget
·         recycled materials (when possible)
·         make it strong, safe, and reliable
·         make no modifications to the bicycle
·         hopefully make it visually appealing.

I started by searching for a used trailer at yard sales and on Craig’s List, and found a stinky (it really was) old double child trailer.

The newer ones look nicer and have cooler wheels, but I went for an older, less expensive one with bad wheel bearings.

It also had worn out, flat tires and was missing the top.

trailer_instructable01I stripped the top frame and nylon parts off, cleaned the frame, and replaced the wheel bearings and bearing cones myself.

I also found a great deal on a pair of new “Big Apple” tires & bought 2 tubes on sale.

I used some citrus-based cleaner to remove some old decals and other crud that soap and water couldn’t.

A friend trued the wheels for me in exchange for some excellent, locally brewed craft beer.


I considered several hitch options, but the Boda “Love Handles” present interference issues with most.

As I said earlier, I did not want to drill, tap, or otherwise permanently modify the bicycle frame, nor did I want to attach any clamps that could damage or mar the frame.

So I scrounged the internet for the best deal I could find on a Burley Forged Hitch & round-tube Flex Adapter kit.


It is impossible to mount the trailer (as Burley intended) to the Boda with just these items, so I utilized some scrap 6061 aluminum flat bar I had in my garage workshop.

The shorter piece is 3/16” aluminum that I bored holes in using my old drill press.

The top hole is for the wheel axle, the bottom one is where I mounted the Burley Forged Hitch.

I used a very strong bolt to mount the hitch to the aluminum flat bar and torqued it very tightly using a vise and breaker bar.


I finished the aluminum using a belt sander, a Scotch Brite pad and elbow grease.

The narrow bar is 1/8” aluminum, and is used as a “torque strut”, absorbing any twisting or forward moment from the hitch mount.

This keeps the hitch mount from pivoting forward (heavy breaking) or backward.

The torque arm has small bends in both ends to keep it flush with the mounting points.


Once I mounted my homemade hitch brackets and the hitch mount to the bicycle and then hooked up the trailer, I noticed that the trailer was offset about 6” to the left of center.

Dang!   This I didn’t care for, but it wasn’t because of anything that I had done.

So I measured precisely and cut off part of the trailer tongue so the trailer would be centered behind the rear wheel. All this while knowing full well that it would reduce the distance between the rear wheel of the bicycle and the front edge of the trailer.  Below you can see how tight the clearance is (about 1”), but the trailer is centered precisely  behind the rear wheel!  When the trailer pivoted, the clearance would diminish slightly, but still did not contact the rear tire.


I wanted a bigger safety margin and the ability to hang stuff off the front of the trailer a bit.  So the next step was to reuse that piece of tubing to extend the trailer arm, thereby increasing the wheel-to-trailer gap to a safer distance.

One quick cut, two nice welds and viola’, I have my extended trailer tongue.


I forgot to take photos while I was building the bamboo deck for the trailer, sorry.

Suffice to say that I used a package of bamboo flooring that had been damaged slightly during shipping and was marked down in price.

It was tongue and groove style flooring, so I used my table saw and radial arm saw to cut the bamboo to size.

All of the mounting hardware is stainless steel from the local hardware store.

The paint is Testor’s model paint that I found at the local hobby shop.

Below is the mount & trailer connected to the bicycle.  Notice the larger gap between the rear tire and the front of the trailer.

These photos show the original 1/8” thick hitch mount, I later made a new one out of 3/16” aluminum to eliminate a minor wiggle.







Enjoy your Fourth of July holiday!  I know that I will using my new rig to go to the picnic and concert in the park.

Boda Boda Beyond Thunderdome

Some of our customers really exemplify the Yuba spirit; they put a lot of effort into helping others put the fun into bicycles and really having a ball on their Yubas. We’ve shown you pictures of Tim’s Pimped Out Boda Boda Before – but have you seen it dressed up as a autogyro from Mad Max? No, neither had we. 



I’m a both a Ride Leader and Chain Guard (safety) member of both the Denver Bike Night and the Denver Cruiser Ride. Last week our theme was “Mad Max, Beyond Thunderdome”, so I dressed up both myself and the bike as the Auto-Gyro Pilot. I had a great time and so did Max & Lu.


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Petr’s Fat Mundo

Petr, from the Czech Republic, just sent us pictures of his fat Mundo. He lokked out the bike with a NuVinci 360 hub, Surly Endomorph tires and sweet wheelskirts.

Needless to say, his kids think it’s dope.

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Pimp my Ride: Tim Lu Max

Tim Lu Max has been slowly pimping his Boda Boda. Here’s two in-progress pictures of the bike with a custom Soft Spot, a custom Bread Basket liner made to match the standard Baguette. Can you spot the components he powder coated to match?

He’s also swapped the handlebars for swept-back cruiser bars, platform pedals, and added a water bottle from S’well. Coming up next are new grips, fenders and lights.

Looking good, Tim!