Bike Wagon Takes Form
Posted: May 16th, 2010 | Author: admin | Filed under: accessories | 10 Comments »As I’ve mentioned in a previous post, there seems to be a need for a practical bike canopy. My first efforts have been to develop a passenger-only canopy for Xtracycles. [Instructions for the finished canopy are now online in a later post.] My design goals:
- protects an adult or child passenger from wind and rain and temperatures above freezing while giving them some visibility
- can be set up in less than a minute
- fits any Xtracycle
- costs less than $100 for parts
- is easy to build without special tools or parts
- is easy to enter and exit
- adjusts for differently-sized passengers from baby to adult
- adjusts for different weather conditions
- provides a platform for flexible solar panels
- should weigh less than 10 lbs.
- does not require modifying the bike
- not necessarily aerodynamic
- retains the Xtracycle Freeloader cargo capacity
- presents a snappy appearance
Last February Thea and I constructed and tested a rough prototype. I am pleased to announce that after trying out many design variations and solving several engineering challenges, we’ve created a very pleasing and useful design as shown. Later this spring I intend to post detailed instructions so that anyone can create their own canopy. A historian writing about conestoga wagons wrote the following, which I hope also applies to my Bike Wagon canopy:
All chronicles agree that a fully equipped Conestoga wagon in the days when those wagons were in their prime was a truly pleasing sight, giving one that sense of satisfaction which ever comes from the regard of any object, especially a piece of mechanism, which is perfectly fitted for the object it is designed to attain.
Solar Power
I’m currently testing flexible solar panels mounted on top of the canopy. The solar panels should be able to double the range of my bike. And it may be possible that I can just park my bike outside and never have to connect it to an outlet again! A solar-powered stoked Xtracycle may very well be one of the most practical solar vehicles available, if you measure practical in terms of being relatively inexpensive, having spare parts readily available, and being street legal. It’s not speedy or futuristic-looking, but it’s here now.
My Next Canopy Project: The Micro Car
I plan a second canopy development effort in the fall. This second canopy design will be for both driver and rider. I intend for it to be mainly for winter use as a way to replace a car during that most difficult of biking seasons. I hope that people will think of it as a very small but practical car: a micro car if you will. As computer sizes fell from mainframe to mini to micro in the eighties, so I hope that car sizes will fall from the grossly gross SUV to full-size to mid-size to compact to mini to the delightful micro car. Here are my design criteria:
- protects the driver from rain while giving full ventilation
- protects the driver’s hands from wind and temperatures 10 degrees and above
- gives the driver full visibility
- insulated (perhaps with Aerogel batting) to keep an adult or child passenger comfortable at temperatures 10 degrees and above while giving them some visibility
- only needs to be set up and removed at the beginning and end of the cold season
- fits any Xtracycle
- costs less than $1000 for parts
- may require special tools (such as a welder) or special parts
- is easy to enter and exit
- adjusts for differently-sized passengers from baby to adult
- can weigh up to 30 lbs.
- may require modifying the bike
- may have electrical features such as a sound system and lighting
- may be somewhat aerodynamic
- retains the Xtracycle Freeloader cargo capacity
- presents an appearance that inspires confidence in the project
I’ve attached some sketches and photos of my Bike Wagon and Micro Car prototypes below, from past to present.
- The original prototype from last February.
- A Micro Car non-functional prototype using fiberglass poles. We subsequently chose aluminum tent poles because they are stiffer and stronger than fiberglass.
- Side view of the Micro Car prototype showing the central block with spreaders.
- It’s a tight squeeze without the spreaders.
- Kinda pretty, like a biplane’s tail fin!
- Three quarter view of the passenger section.
- I made this prototype from pup tent parts.
- The pup tent frame.
- I considered many tent pole configurations.
- Road tests to determine what’s better: side by side or front and back hoops?
- The side-by-side frame.
- The front and back hoops. We felt this geometry gave the best interior space.
- Front and back hoops on the road! Also covers the driver a bit!
- Road tests are fun.
- Thea sewing the canopy cover out of lightweight rip-stop nylon. We chose a rectangular cover so that sewing it would be easy. Also a rectangular cover can adjust to different pole configurations and is most suitable for supporting solar panels.
- I attached the canopy to a garden cart for transportation of several young ladies at Thea’s Laura-Ingalls-themed 10th birthday party.
- The penultimate prototype, front view.
- The penultimate prototype, rear view.
- The biggest design challenge was coming up with a strong three-way tent pole joint. This wooden version cracked…
- …this plywood version was okay but ripped the cover…
- …but this version, which has the hoop elbow embedded in a larger pole, performed well.
- I like to sketch an idea before building it.
- I used a 7/8″ dowel for the base. 3/4″ electrical metal tubing also works.
- The basically finished canopy rear view.
- The basically finished canopy front view.
- Canopy on the Commons.
- Solar-powered bike wagon.





























[...] I’ve been doing a little research on bicycle canopies. There are surprisingly few examples out there. Here are a few that come up on the top of a web search. (Update: check out my own canopy design.) [...]
[...] about DIY. Larry, ofBikeForth.org, details his Xtracycle canopy, Conastoga-style solar panel roof and future micro-car project. Very [...]
Hi Larry: My name is Jason Crane. I started RocBike.com and on June 1 will be the executive director of the New York Bicycling Coalition (nybc.net). I’ve been an Xtracycle rider for several years, and I love your canopy design. I’ll be in Ithaca sometime in June to meet with an NYBC board member. Any chance I could get to see the canopy in person? All the best, Jason.
[...] An Xtracycle canopy. Learn more. [...]
Any chance you’ll post the pattern and DIY instructions?!
[...] outlined my design criteria for an Xtracycle microcar canopy in a previous post. Here are more general microcar design criteria with some ideas about how they might be satisfied. [...]
Ditto the request for a pattern and DIY instructions…very nice setup!!!
[...] recently needed to add guy wires to my Bike Wagon canopy design because when I put my solar panels on top of the canopy, the added weight made the canopy wobbly. A [...]
Inspiring.
[...] a previous post I described a canopy that Thea and I made for our Xtracycle to protect her from wind and rain. It [...]