Andre’s chopper bike – Brazil

“Hello! My name is Andre, I live in Sao Paulo, Brazil. I would like share my chopper bike.

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Homemade recumbent from Hungary – Atomic Zombie builders gallery

“Hey. This is my new 16” wheeler front-wheel drive SWB fun recumbent – Pycikli. A home made comfy wooden seat. Great fun to ride, easy with no hands!

Here’s a short summary video about making this bike and riding for the first time

More pics and vids in my blog at

Thanks for sharing!  ~ Motyoo, Budapest, Hungary”

Oregon recumbent trike – Atomic Zombie builders gallery

“I built a lowracer but quickly didn’t decided to build a trike. With my other plans for a trike I combined both bikes and this is the final recumbent.I love it and and so far put on about 60 miles.”  ~ Don from Central Oregon

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Butch’s Motorized Tadpole Warrior – Atomic Zombie builders gallery

“This is my latest winter project that I just finished. I had to make the frame about 12 inches longer than the original plans to accommodate the 49cc Honda 4 stroke motor and EZM Q-Matic transmission.”

bicycles, bike plans, bikes, DeltaWolf, diy, homebuilt, italy, kyoto, overkill, quadcycles, recumbents, spincycle, StreetFighter, streetfox, tadpole trike, tandem, velomobiles, warrior, welding

Three Piece Bottom Brackets – HELP!

“Okay, I’ve got the remains of over 12 mountain bikes, BMX bikes, and road bikes sitting waiting to be chopped up for my Delta Wolf project, and others. And every one of them has a lousy, large, ugly one-piece crank set. Unbelievable!”

Read more and join the discussion:  Three Piece Bottom Brackets – HELP!



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G’day from Australia – Atomic Zombie builders forum

“Hello all, I just joined, Brisbane, Bicycle Hacker Chopper Modifier Etc, Ex Boilermaker Retired.  Love my Hobby. Hope to Learn more.”

Read more and join the discussion:  G’day from Austraila

6 DIY bike plans for under


LWB recumbent from Sweden – AtomicZombie builders gallery

“Hi! I have to send a picture of my first bike! I’m doing one more soon. Thank you for loads of inspiration!!
~ Oscar,  Sweden”


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Quadcycles by Roger – AtomicZombie builders gallery

“Here’s two new ones. I built the small one for my wife and I and the orange one for my Mom & Dad. One uses Kyoto influence and the other is just a cheap throw together of old parts. Both are a blast to ride! 🙂 ” Roger

Kyoto Cruiser Recumbent Social Trike  – 15.8MB PDF Plan

The Kyoto Cruiser Recumbent Trike is designed to be a real alternative to the automobile for many short trips, errands and leisure rides. The trike has a very sturdy frame and wheels, and since seats are placed side-by-side rather than inline, you can enjoy a sociable cycling experience with a partner. The Kyoto Cruiser is very comfortable thanks to its recumbent seat design, but it also has a seat height typical to many small cars to aid visibility and navigation in traffic.

The Kyoto Cruiser Recumbent Trike is loaded with unique features, including a full range of gears and 20 inch wheels for extreme hill climbing capabilities, and independent front and rear shifting systems so that each rider can pedal at his or her own pace and comfort level. Handling is very smooth with the ability to turn tight circles and stop efficiently using dual rear disc brakes. The unique sliding bottom bracket system can be easily adjusted to suit any rider size so that youngsters and adults alike can enjoy the experience. With gas prices shrinking our wallets and our hectic lives leaving us with limited time to reduce expanding waistlines, the Kyoto Cruiser may be the answer to many of our daily problems!

With a few days of hard work you will have a very sturdy and sporty looking trike that not only performs as good as it looks, but is a true joy to ride on short and long hauls. Most of the parts can be easily found at bicycle shops, thrift stores, hardware stores, or from scrap bicycle parts. Like all Atomic Zombie designs, we aim to keep things as simple and effective as possible, requiring only common parts and basic tools. Of course, there is always room for experimentation and alternative designs based on your own style or needs.

Take a look at our Builder’s Gallery to see other KyotoCruiser Recumbent Trike examples, including many creative modifications to the plan. Our international builders community ranges from students to retired engineers, but they all have one thing in common – the desire to build their own stuff!

StreetFighter Recumbent Quad Cycle  – 16.3MB PDF Plan

The StreetFighter Recumbent Quad Cycle is a one-of-a-kind, four-wheeled racing machine that  can best be described as half Indy car, half exercise bicycle! The  ultra low and laid back recumbent riding position gives you a race car  like feel, allowing you to push hard into the corners without fear of a  rollover, and to deliver as much power as your legs can output directly  into the cranks. If building an extremely cool looking, high quality  and fast recumbent cycle is your idea of fun, then the StreetFighter is  the perfect choice.

The StreetFighter is made mostly of standard  bicycle components and square steel tubing, with only two small parts  that need to be machined. If you own a welder and an angle grinder,  then you have all you need to build your own racing quad in your  garage. Because of the unique "hubless" rear wheel design and use of  standard BMX rims, you will not have to spend a fortune on custom  bicycle wheels. The StreetFighter also features dual disc brakes and an  adjustable bottom bracket so riders of any height can enjoy the ride.

The StreetFighter is a great way to experiment with human power, and is  a perfect candidate for a full body, allowing much higher speeds. There  is plenty of room for your own customization due to the simplicity of  the square tube frame. The unique transmission system can be easily  adapted to many other types of vehicles. The StreetFighter is also  robust enough to carry heavy riders.

Take a look at our Builder’s Gallery to see other StreetFighter Recumbent Quad Cycle examples, including many creative modifications to the plan. Our  international builders community ranges from students to retired  engineers, but they all have one thing in common – the desire to build  their own stuff!

All of Atomic Zombie Extreme Machines plans are downloadable PDF format. Multiple discounts, free tutorials, videos, gallery, newsletters, blog and more.

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Handmade short wheel base recumbent from Hungary – AtomicZombie builders gallery

Hello! My name is Csongor from Hungary and I made this bike 🙂

Nice bike, Csongor!

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Barry’s no weld recumbent bike – builders gallery

“Hi  AZ. Attached is a pic of my no-weld =-O recumbent trike. Also the complete build details and video are at: .

Thanks for your plans (inspired by the DeltaRunner plans I bought from you).  Happy 2011.  ~ Barry”

From Barry’s blog:

Overall project statistics

  • Cost: less than $250  Canadian
  • Took less than a month to build  (I spent longer because I did lots of thinking and working stuff out).  Started in April, 2010, rideable 5 June, 2010.)
  • Needed Tools: Hacksaw, wrenches, electric drill, jigsaw, rotary tool (like a Dremel), bicycle multi tool (Crank Brothers Multi-17 Multi Tool, about $27 at Mountain Equipment Coop; Multi-17 has a reliable chain tool for breaking and re-connecting chains), bicycle crank tool (Filzer Crank Multi Wrench from Mountain Equipment $17).
  • Optional Tools: Angle Grinder, Drill Press
  • Experience with bikes: used to ride, no bike mechanics experience; on June 6, 2010, I changed my first bicycle tire (AFTER building the trike)
  • Uses parts from three salvaged bicycles
  • LOTS of thought and anxiety about how things will fit or work or fail
  • Approximate Dimensions:  WIDTH 94cm (37inches). LENGTH 211cm (83 inches).  WEIGHT (I don’t know).
  • Gearing: 18 speeds


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