Our quietest, most powerful and compact human power generator.

It’s the most efficient, easy to use, compact, and quietest Pedal Power generator we know of. We use it as one of the key pieces of gear in our Pedal Powered Stage.
The Electric FB Pro combines a Fender Blender Pro with a brushless generator wheel . The hefty front wheel has a flywheel effect that helps smooth out the peaks and valleys of Pedal Power, and because there’s nothing rubbing on the tire, there’s no loss of power to friction. The conversion of mechanical energy (i.e. muscle power / burrito power) to electrical potential happens in the middle of the wheel. With a committed pedaler, this one bike is more than capable of powering a music system at very impressive listening levels. One person pedaling can get 50 people dancing to high energy DJ music when the Electric FB Pro is paired with efficient loudspeakers.

The Electric Fender Blender Pro generates DC power. Most devices you’ll want to use require AC Power. Please see the video below to learn how this generator works in tandem with our Pedal Power Utility Box:
What can you power without additional gear? As is, the Electric Fender Blender Pro can directly power our LED Panels or long strings of LED lighting.
If you’re wondering about whether you can use Pedal Power for a particular device or appliance, start by checking the wattage rating on the label near its cord or in the product manual. A single pedaler on the Electric Fender Blender Pro is capable of producing up to 600 watts of DC power at peak moments. This wattage, of course, is dependent upon how strong your pedaler is! Most adults can produce 50-75 watts when pedaling at a social / around town / cruising pace.

Above: 2 Electric Fender Blender Pros generating power at the Bicycle Music Festival. The Electric Fender Blender Pro can be used with other generators as part of a team effort. Our Pedal Power Utility Box accepts power from up to 6 or more bikes, depending which version you buy.
The Fender Blender Pro frame fits a wide variety of riders, down to a 10 year old kid.

The Electric Fender Blender Pro is not a functioning transportation bicycle, but can be easily towed behind another bike with the optional trailer wheels.
We also offer custom branding for the FBPro, as well as the VitaMix upgrade for 2x the volume and 2x the blade size.
Price: $2,125
Rentable: Yes, with Pedal Power Stage
Rock the Bike is excited to announce that the custom plastic components of all the Fender Blenders are being made from 100% recycled or reused plastic. Historically, these parts have been made of virgin HDPE (high density poly ethylene), and now will be made from a recycled source of the same material – recycled milk jugs.
Rock The Bike has always sought to make products that help individuals tread lightly on the planet. Making sure that our products utilize as much recycled materials in the manufacturing process and contain as many recyclable components as possible is an exciting way to deepen our commitment to being a truly environmentally minded outfit.
This three minute video shows the three different types of bike blenders we make, in use.
The Fender Blender is available for rental for Bay Area events. Please contact us to pencil your date into our rental schedule.
We provide training and tips on recipes. Our Fender Blender also has removable wheels so that you can tow it to your event with another bicycle, and wheel it around your event.
If you’d prefer to pick up the Fender Blender with a vehicle, any station wagon or small SUV will be able to handle it. It can be disassembled to lay flat, then reassembled at your event location by tightening a few bolts.

If you’re interacting with the public at events, whether it be a trade show, a performance, a marathon, or a science faire, the Fender Blender can help build excitement at your booth. Kids are magnetically drawn to the simple red frame, and they can pedal their own smoothies, or just turn the pedals for fun.

Once people are gathered at your booth, what you do from there is your own choice. But having a natural, fun, guaranteed effective way to bring people in can’t hurt.

Your Fender Blender can be tricked out with your custom logos and colors. The large wheel covers are easy to customize with your company’s logos or graphics. Please find out more in our FAQ section: What do you offer for customizing the frame color and printing our design on the wheel and frame of the Fender Blender Pro?
Please call us at 1-888-354-BIKE to discuss options or get a quote.
![]()

The sleek brushed aluminum chain guard comes standard on all Fender Blenders. It keeps pants clean and prevents the chain from ever slipping off the gears of the bike.

From the gears, handlebars, and bearings on the blender, to the Oster blender blade and pitcher, you won’t have a problem finding and replacing any of the parts on your Fender Blender. Should your chain wear out (after thousands of smoothies, mind you!) Any bike shop should be able to service your bike blender.
Designed to fit riders from 7 years of age on. Just adjust the seat height for smaller or taller riders and let them loose. Designed for maximum rider participation and superb ease of use. Watch how easy it is below:

Simply bolt on the lateral feet with included hardware, tilt the handlebar into place, load your blender pitcher and get to work! Premium product designed for nearly instantaneous customer implementation. Ship to your tradeshow and have it up and running in fifteen minutes!
The curved steel frame is locally welded. The machined plastic parts are made of recycled plastic, and are dishwasher safe and virtually unbreakable. The square drive shaft is heat treated and hardened for maximum life. All hardware is stainless steel and will never rust. Frame is powder coated for long life/outdoor use. The Fender Blender uses a simple friction drive to spin the blender blade fast, while remaining simple and easy to service.Click here to view, download, or print the Fender Blender Pro manual.
Yes! Use this photo to identify which parts you need. Then email us or give us a call at 1-888-354-BIKE so we can get you bike blending again. Use the video (below) to see how to dissemble and reassemble your blending component.
Here’s a copy of a recent receipt from Trader Joe’s for a Bike Blending event that served 100 people. To serve the most people in the least time, here are the factors to consider: – Ingredients. This is the easiest. Ingredients cost $0.60 per 8 oz smoothie. Scale this to meet your crowd needs. [...]
Pedal Powered Spin Art is compatible with all models of Fender Blenders: Pro, Universale and Xtracycle. If your Fender Blender was purchased before 2011 chances are you will need a new spindle. The photo below shows the proper spindle. If your not sure, send a picture to us at customerservice@rockthebike.com
You can green your event by renting our Pedal Power gear, reducing your carbon footprint and inspiring people at your event. Check out all our great bikes for rent, and let’s start talking about your upcoming event. Equipment Overview Product Daily Fee Crew Size Set Up Additional Supplies Needed How Many Can Experience Hourly Space [...]
Yes. Rock the Bike offers 2 Fender Blender options for kids. We offer a Fender Blender Universale with an extra long roller and a Stationary Stand to reach 20″ wheels for kids approximately 6-10 years old. The FBU will include P-Clamps for your rack to attach to your 20″ wheel properly. Click here to read [...]
NOTE: The directions below are good to follow for the proportions, but not the order. Do not start with ice! The blade needs to get moving and a piece of ice can jam it. Start with something soft like chunks of banana! We’ll be updating this page with up to date photos. First, fill up [...]
Bike Blending in action at Longfellow Elementary’s Spring Carnival Our Nonprofit Discount Program grants refund awards of 15% off your purchase of Rock the Bike gear to a limited number of nonprofit or educational applicants per quarter and has a simple application process. Requirements: – Proof of nonprofit status (501c3) – Paragraph of who your [...]
Full Wheel Wrap, Flaming Saddle Upgrade, and modified handlebars. Custom branding on Fender Blender Pro We can produce custom logos with our printing partners and install them to our customers’ specification on the Fender Blender Pro. Customized Full Wheel Wrap, Custom Color, Frame Branding, and Vitamix Upgrade We provide a full service offering for [...]
It takes about 30 seconds of medium-hard pedaling to blend a smoothie with a Fender Blender.
The Fender Blender Pro has only one gear. The way to make it easier or harder is to change what you put in your blender pitcher. For example, smaller ice cubes are easier to crush than larger ones, and frozen fruit is easier to crush than fresh with ice added.
Hi, Friends, Wanted to let you know how much we love our new bike. Sending along a shot from one of its first outings. Thank you for making it possible! We’ll be rockin’ and blendin’….Nutrition Council
The events have been going great. I was really impressed with the quality of the bike. Thanks for all of your help. –Adam, Travaasa Travaasa is a interactive resort in Austin, Texas that provides guests with more than just a room. Their activities include guided adventures, cultural encounters, cooking classes, spa treatments, and fitness and [...]
We are just under two months of owning our new Fender Blender Pro + Vitamix, bicycle blender, and I am excited to say it is a hit! We already knew that bicycle blenders are a great resource to promote fitness and nutrition at our outreach events, and we are very pleased at the quality of [...]
Spinlister, a new framework for borrowing bikes in cities around the country, were headed to a recent Venture Capital funding conference and wanted to grab attention by offering Bike Blended Smoothies. Our favorite mobile chef Slam strapped one Fender Blender Pro and a cooler full of smoothie supplies to her cargo bike and dropped off [...]
Check out this great tweet from Whole Foods:
go vibrant is a nonprofit organization whose mission is to make an active, energetic lifestyle irresistible. Our efforts are focused around amplifying the efforts of other organizations/clubs/etc sharing a similar goal. We accomplish this in a variety of unique and irresistible ways. We heard of a stationary bike retro-fitted to include a blender powered [...]
Habits of Wellness The “New England Dairy & Food Council Fuel Up to Play 60″ grant helped us purchase a stationary bicycle blender. During our kick off event, we made over 400 fruit yogurts smoothies. Students signed a pledge to eat well and be active on a daily basis. It is great to see students [...]
We would like to thank Rock The Bike for allowing us to rent out smoothie bikes for this year’s FunFest at the SF Giants’ AT&T Park! We managed to serve over 2,200 smoothies and received more thanks and smiles than we could have ever asked for. This was a first for LIFT and you helped [...]
We have been enjoying our bike powered blender greatly. We used it on saturday for a Minnesota Campus Energy Challenge Retreat and it will be used again this Thursday for a end of the semester party for our campus bike coop.
-Miwa in Minnesota
“Rock the Bike team met the public at the Maker’s Faire in May 2007. The Fender Blender, as always was a great draw and a big smile machine for kids at our booth.”
Bay Area Venture Capitalist Steve Jurvetson blends a smoothie on Songbird’s Fender Blender
The technical needs of a Pedal Powered event vary greatly depending on things like audience size, venue, and power needs of musician’s devices. Over the past 6 years Rock The Bike has Pedal Powered events large and small. In this post we’ll try to help you arrive at what type of Pedal Power system would make the biggest impact for you.

Above: Shake Your Peace! performs during the Bay Rising Tour on their Pedal Powered Stage crafted by Rock the Bike.
Please consider and answer these questions:
- Outdoor v. Indoor. Doing anything in an outdoor space requires more power, as there are no resounding walls. What are the spaces you wish to use as venues? Do you have a photo of one of the events you host?
- Will you be doing nighttime events? Is there always light available? Do you have a need for Pedal Powered Lighting?
- What is your main motivation for doing Pedal Power?
- Audience size. How many people are in the crowd at the events you envision Pedal Powering?
- Do you need to provide AC power? Examples of why you’d need this include: charging cell phones, charging laptops, powering a mixing board, powering a power tool as an example of Pedal Power.
- Stereo v Mono. A 1 Bike / 1 Speaker setup is awesome for demonstrating Pedal Power and for public speaking. But to have a proper concert, it helps to have two mains.
- Related… Do you want or need to be completely off the grid? Sometimes you just want to demonstrate Pedal Power but in places where there is wall power. Other times you need to be completely off the grid. Do you have devices that need to stay ON (such as laptop, projector), and is there a source of AC power (Wall Power) available for these devices? Or would you like to be completely ‘off the grid’ and have Pedal Power be the source for all your power needs?
- Subwoofers. You can’t use subwoofers without extra pedalers. Subs are great for dance music. Not essential but really appreciated. And you can Pedal Power them!
- Do you want to be able to bike it all there? If you want to ride with the gear to the venues, there is a need for cargo bikes or trailers.
- Do you have a crew? Who are the people who will set up the Pedal Power system? Who will be the technical lead on this project?
- Do you want to have kids be able to participate? If so you will need extra bikes, because they want to pedal but cannot contribute that much actual wattage. At around 12-14, kids are big enough to contribute real amounts of power. Younger than that, they care greatly but won’t make a difference (power wise) and may take seats away from bigger kids or adults who can.
If you could please provide some quick answers to these it will help me craft a recommendation.
The Fender Blender Pro is up to the task of ice crushing and quality blending. Check out all these great videos of it in action!

Above, two Mundo 500 generators in use at the Eugene Bicycle Music Festival. The rear wheel is elevated off the ground so that you can pedal in place and generate power.
| Number of Pedalers | Estimated Crowd Size Possible in an Outdoor Location |
| 1 | 200-500 (with One Bike / One Speaker) |
| 4 | 500 |
| 8 | 500-1000 |
| 12 | 1000-2000 |
| 20 | 2000+ We haven’t had enough chances to test at these power levels. |

The Electric Fender Blender Pro, our most compact, efficient generator.
What kind of generator?
The most effective generators are hub generators. They are efficient, quiet, and can convert a huge flow of power if the pedaler is cranking hard. The less effective ones are friction generators (tire rubbers). We recommend only hub generators, though for people on a long-distance bike tour, the extra weight is a drawback. Using efficient, quiet generators is better because it makes Pedal Power feel more impressive, which makes people want to pedal more, which in turn makes them want to ride bikes well after your event. Check out this page to see all of our generator options: the Mundo 500 (electric version of our favorite cargo bike), the Electric Fender Blender Pro (towable bike blender and generator), and generator wheels to turn any bike into a generator.

What kind?
Do not bother with Hi-Fi equipment (including home theater, bookshelf speakers, and computer speakers) or car audio gear. Neither of these were designed for large spaces and large crowds. If your goal is to produce an outdoor music event, you need to use “Pro Sound” equipment that was designed to reach larch crowds at events.
We sell Modified JBL PRX Loudspeakers. We modify and sell the full line of JBL PRX speakers, from the smallest wedge monitor (the PRX 612) to the 1000-watt subwoofer, the PRX 618. The ‘modified’ part means that we hack the circuit boards to allow them to run on DC power, bypassing the need for AC power (wall power). Since the conversion of Pedal Power from DC to AC and then back to DC inside the amplifier is wasteful, our Modified JBL PRX loudspeakers run 43% more efficiently than in AC mode. PRX loudspeakers are already some of the most efficient powered speakers commercially available, thanks to their Crown digital amplifier, so the additional power savings in DC mode makes them (quite possibly) the most efficient Pro Sound loudspeakers in the world! They make Pedal Power feel truly impressive. Pedalers have a big smile on their face when they hear how much powerful, crisp sound results from their good clean Pedal Power. This is a Rock The Bike exclusive offering.
PRX speakers are made of high quality plywood and have a durable coating. Although they’re heavier than some plastic speakers, they are relatively lightweight for Pro Audio gear, making them manageable to get to and from events by bike.
What ever loudspeakers you use, don’t forget the importance of proper elevation and positioning of the loudspeakers. Pro-sound speakers like the ones we sell at Rock The Bike have scientifically calculated dispersion cones that help the sound spread out to the sides. In order for these dispersion cones to do their work, your speakers have to be up in the air on a speaker stand.
How Many?
Generally you need at least two mains to do an event. But we know from experience that with 1 speaker, good music, and Pedal Power, people will dance. Generally speaking, divide the anticipated size of the audience by 100 to get the correct number of mains. This is only applicable for events up to 500 people. Beyond 500 people, using speakers on stands is not going to cut it. You need to start thinking about elevating the speakers even further, using subwoofers, and considering a Line Array configuration.

What about monitor speakers?
Monitor speakers are how the bands hears themselves during performances. Very few musicians can perform at their best without monitors. Generally you need 1 monitor for every 2 bandmembers of a full band. At least 2 for most bands. For public speaking events like a press conference, you can do without them. We sell the Modified JBL PRX 612 wedge monitor.
What about the speakers you already have?
You may already own certain Pro-sound gear or have musician friends who have gear. Can you just plug that in and roll with it? Basically, the answer is yes, but you may pay a significant penalty in both weight and efficiency with older PA gear. Many newer powered speakers have digital amplifiers. These generate less heat and therefore require less power/fewer pedalers. How can you tell if your speaker has a digital amplifier? Look up the model number online, or measure the wattage of your speaker using a Kill-A-Watt.
Can bands still use their own amplifiers?
Musicians are used to playing their guitar, bass, and sometimes keyboard through a specific amplifier. The amp is part of their instrument, part of their sound. Unfortunately, their amp increases your overhead. Ideally you will have enough bicycle generators that the extra wattage of their amplifier doesn’t matter. Asking a musician not to use their own amp is an unusual request. However in our experience, we get great results asking bass players to ‘go direct’ or play through the PA. This means that the bass player leaves her amp at home, and plugs the bass into a channel on our mixer, just like the lead singer. There’s still plenty of bass but there are fewer devices ON and therefore lower overhead. If you have a small Pedal Powered Stage with, say, 3-5 pedalers, you may not have enough raw power to keep additional devices on besides the bare essentials (the mains, a monitor, and the mixer). Fortunately, the bass players we’ve worked with are very happy with the sound they get at our events.


Can you store the energy created?
The circuit also includes whatever storage method you are planning to use. We use 30V Ultracapacitor ‘bricks’, which hold just enough power for a few minutes of music.
Why do I need protection circuitry and what type do I need?
The microprocessor brain in our Pedal Power Utility Boxes monitors the key system voltages and triggers relays that disconnect the pedalers from the system to prevent overheating and damaging the devices you’re running, or the Ultracapacitors. In addition to overvoltage protection, you also need fuses in case of short circuits. The input cables that connect the bikes to the system are long and are often subject to harsh conditions: people walking on them, tripping over them. Of course, you should tie these down as well as you can with reuasable Velcro ties. But you should also install fuses that prevent a bad yank from causing a meltdown. The circuit itself needs to be protected. We use Tupperware inside the box to prevent our microprocessor brain touching anything else and accidentally shorting. Your circuitry can’t be out in the open where it can be damaged in transit or where a metal wrench can be set down on it, causing a short circuit.
In a bicycle based system, any wire can be tugged or rub against a tire and degrade from wear. They need to be ‘strain reliefed’ and insulated. Connections from bikes to the circuit need to be both quick-connect for ease of setup and robust. We use Neutrik connectors, the industry standard for Live Sound.
Our current pricing structure is that most of your wiring is built in to the price of the other components. For example, if you buy a generator, you get an input cable. If you buy a speaker, you get a speaker power cable. We use only 14AWG gauge wiring for power cables that will see the outside world.

You will need a way to show Pedalers how hard to pedal. Otherwise they may drift off in their thoughts (and power output) or overpedal your system.

Our latest LED Pedalometer, shown above, is visible across a wide area, day or night. It’s controlled by a microprocessor that continuously monitors system voltage.

Our original Pedalometer (2oo7) involved a fan blowing air into a tube perforated with holes. The higher the system voltage, the harder the fan would blow and the higher the beer can would rise in the tube. It was quite motivating.
The ideal Pedalometer is the classic thermometer style, because it’s intuitive, making it possible for pedalers to get lost in the music while still providing the exact amount of Pedal Power needed. The pedalometer uses color-coding to show the pedalers when they need to pedal harder and when they need to slow down. Just keep it in the green.
The voltage information shown on the Pedalometer is also important to the sound guy/girl, who can raise and lower the overall listening levels and the bass levels according to the available system power. The Pedalometer also engages the audience in the Pedal Power experience. Even the bands get involved. When they see power levels dipping, they may make a funny comment about it between songs to help pedalers boost it back up.
Pedalers need to be coached. There are two essential aspects to doing this: the human touch, and accurate, up-to-the-second information about the system voltage.


Additional load-carrying gear to get to events by bike. This can include Bikes At Work trailers, Xtracycles, Mundos.



Let us bring our years of experience with Pedal Powered lighting to craft something special for your event. For fun or for education (or both!), the possibilities are endless!

The sLEDgehammer, an interactive Pedal Powered lighting rig. More LEDs light up when you pedal harder, converting your peak power output on an efficient bicycle generator to beautiful light. Click here to watch the video!
The sLEDgehammer’s display can be customized for your event, like a courtyard installaton (above).


Above: Lines of light come from the generator bike, extending further (up to 300 feet) the harder you pedal.

Above: More lines of light on our 18′ tall Bamboo Tripod.

Above: Pedal Powered Stage LED lighting: 1 pedaler per panel.

Above: The large light-up Wattage Display shows the instantaneous power use of our Pedal Powered Stage. It averages readings to show you the power use over the last 5 seconds

Above: Sir Richard Branson pedaling the Light Bike comparison station at the Virgin Mobile Festival in Baltimore, 2008.
Switching back and forth allows the pedaler to feel the energy savings of CCFL bulbs over traditional incandescent bulbs.
We have integrated Pedal Powered Lighting into several of our custom Soul Cycle rigs, including El Arbol, the Bike Tree:

The Blue Whale:

and The Choprical Fish:

If you’re looking for applications to use Pedal Power, there are two main types: Mechanical and Electrical.
Mechanical applications generally have the advantage of being simpler, cheaper, and with simpler maintenance. They include Bike Blending and Spin Art.
Electrical applications are more limitless. The options include, but are not limited to, audio amplifiers, AC Power, and light.
The Fender Blender Pro is up to the task of ice crushing and quality blending. Check out all these great videos of it in action!
NPR’s Jennifer Sharpe interviewed Rock The Bike in August, and also attended the California Academy of Sciences Night Life event the night Rock The Bike brought the Pedal Powered Stage.

In the shop on the day of her visit we were finishing up a build of a new hybrid Electric Mundo that we used at Nightlife as one of our generators.

Sharpe also interviewed David Butcher, a pedal power afficionado based in the Mountain View, who seems to get younger as the years pass.

And she visited Lonnie Green in Grass Valley who came up with a Pedal Powered earth mover.
Transcript excerpt:
(Soundbite of song, “Sending Out”)
Mr. FOSSIL FOOL (The Bike Rapper; Founder, Rock the Bike): (Singing) You got to leave your Prius outside the club. You got to leave your Hummer outside the club.
SHARPE: Pedal-powered bike rapper Fossil Fool, also known as Paul Freedman, is out on the steps of San Francisco’s Academy of Sciences. Seeing human power as a tool for community building, his company: Rock the Bike, sells what might make a good mascot for the human power movement: A pedal-powered bike blender called the Fender Blender.
Mr. FOSSIL FOOL: Almost everyone that buys it, the first thing that they want to do with it is they want to take it out into their community and share a sweet, thick, bike-blended smoothie.
(Soundbite of a blender)
This past weekend, Habana Outpost celebrated its season opening with an Earth Day Expo, featuring kids’ activities, outdoor film screenings, an eco fashion show, workshops, local vendor booths and live music. We arrived promptly at noon on Saturday, hoping to beat the crowd (which on this first warm day of the year could be nothing but insane). We did, and were the first to make use of the smoothie “bike blender”, a stationary bike with a blender attached to it — pedal and receive $1 off your smoothie, seems like a deal too good to pass up. Even though it may not be the most efficient eco-feature, because of its crowd appeal it is probably the one that gets the most attention.
Sean Meenan opened NoLita’s Cafe Habana and Habana To Go in 1998, with a mission to serve home-style Latin food with unique Cuban and Central Mexican accents. Habana Outpost, located in the Fort Greene neighborhood of Brooklyn, is the third member of this culinary family. Besides being a fun place to spend a sunny day, Habana Outpost is NYC’s first eco-eatery, aiming to reduce wasteful consumption and promote sustainable solutions by using earth-friendly practices in the design, construction, and day-to-day operations.

Fender Blender Universale in Sierra
It takes just a minute to whip a morning smoothie or an after-work margarita with a pedal-powered blender from Rock the Bike.

Sierra Magazine cover
![]()
Illuminate their imaginations. What is a concert without stage lighting? With our new LED panels you can run lights directly off Pedal Power with no circuitry. Allow your audience to control the feel of the show by controlling the lights. The harder they pedal, the brighter the lights will be. Get kids excited to see [...]
The sLEDgehammer is an interactive light challenge that harkens back to the classic carnival Sledgehammer game. But here, the aim is to convert your peak power output to a beautiful light display. The sLEDgehammer can be installed in several ways. Our favorite method is doing large custom installs like the ones shown on this page. [...]
Rock The Bike’s Pedal Power Utility Box in use at an event. This handy utility box has puts all the essential circuitry needed for Pedal Powered events safely beneath a polycarbonate panel, so wires don’t get yanked, then displays current power levels to pedalers on the 4-Line LED output. Dealing with wiring is often the [...]