My left crank arm came loose and seems to have damaged the square bottom bracket mount. I assumed the bottom bracket was just a standard square taper, but noticed it says “8fun” on it. However, I can’t seem to find an 8fun bottom bracket available online, so I can’t figure out what part I need—I suspect there is a something obvious that I’m missing. Any ideas to get me back on the road? Thanks all.
While GM and Tesla are getting their toes wet, or at least implying that they might, and Ducati is at the table with a serious range of electric bikes, Yamaha is the Japanese entrant to the market. But this isn’t new news. The company has sold over 2 million electric bicycles globally, as well as 4 million drive units. It is a big player in this space and has been since it started. As with Ducati, you can’t buy an electric motorcycle from the motorcycle-heavy brand, but you can power up hills on road and off with one of their motorized products.

There's no room for failure in DH. That's why our Demo 8 downhill mountain bikes get right down to business. They're designed to be the fastest bikes on the track, and with a World Cup overall, it's safe to say that we did it right. You'll find 200mm of our FSR suspension, aggressive S3 DH race geometry, asymmetrical frames, and 650b wheels. It's a machine primed to give you maximum control over the gnarliest terrain that the mountain can muster.


A 2008 market survey showed that the average distance traveled in the Netherlands by commuters on a standard bicycle is 6.3 kilometres (3.9 mi) while with an e-bike this distance increases to 9.8 kilometres (6.1 mi).[79] This survey also showed that e-bike ownership is particularly popular among people aged 65 and over, but limited among commuters. The e-bike is used in particular for recreational bicycle trips, shopping and errands.[79]
In a parallel hybrid motorized bicycle, such as the aforementioned 1897 invention by Hosea W. Libbey, human and motor inputs are mechanically coupled either in the bottom bracket, the rear wheel, or the front wheel, whereas in a (mechanical) series hybrid cycle, the human and motor inputs are coupled through differential gearing. In an (electronic) series hybrid cycle, human power is converted into electricity and is fed directly into the motor and mostly additional electricity is supplied from a battery.

While this set off some excitement among Tesla watchers who also love two-wheelers, it’s much more likely that any e-bike that emerges will be a limited production run, Tesla-branded bike built with one of many great e-bike companies in California. Like the Tesla carbon-fiber surfboard or the Boring Company Flamethrower, it would provide excellent press, be offered at a high price point, sell instantly and be even more good marketing for Tesla. It might be a folder designed for the Model S frunk or other niches on the Model 3 or X. On the other hand, e-bikes are becoming a high-volume, global business and Tesla is well positioned with global retail space, excellent access to batteries, and big factories to get around for its staff. There might be a permanent product in place. Regardless, a dozen e-bike manufacturer CEOs undoubtedly picked up their smart phones and tried to get through to Musk or his execs immediately to offer their services.


Shell Eco-Marathon Americas Competition 2015 1st and 2nd Place Winners Both Used an Electric Bike Technologies Hub Motor! The Mater Dei Supermileage 3 Team of Mater Dei High School, in Evansville, Ind., took the top spot in the Battery-Electric Prototype category. The team built a vehicle using an electric bike motor from Electric Bike Technologies USA and won the electric plug in class at the 2012, 2013, 2014 and 2015 Shell Eco-Marathon Americas. They...

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Looking for electric mountain bikes? Propel has you covered. We carry many different types, most of which have a center drive motor since they perform best on the trail and they’re great for climbing. Our bikes have motor systems from leading manufacturers including, Bosch, Shimano, Brose and Yamaha. Most electric mountain bikes or EMTB’s are limited to 20 mph, but some do go up to 28 mph. We carry many different types listed by category below. We have full suspension, hardtail, fat tire, carbon fiber eMTB.
But if you’re coming back from injury, looking to ride more miles in a shorter period of time, or just ride further without getting exhausted, then the Turbo Levo is just amazing. This bike is the great equalizer. Some may see that as a negative, lowering the sport’s barrier to entry, but we think more people on bikes can only be a good thing. It will make returning to mountain biking after the birth of a child, an injury, or a stressful period at work much easier. Life happens, the electric assist bikes like this Turbo Levo will help more people ride more often. 
Sure, you train hard and eat right, but there’s just one thing missing—an edge. The Amira gives you two. First, there’s the performance edge you get from its FACT carbon frame and tapered head tube. The combination results in responsive handling and true get-up-and-go accelerations. Then comes the psychological edge. The feeling that, when teamed up with a lightweight, high-performance machine, there’s no limit to what you can achieve together.
Our job is to make sure you enjoy your EVELO for many years to come. That’s why they are backed by a 4-year/20,000-mile warranty – double the industry average. If a problem comes up, you are just one call away from our U.S.-based customer service. Combined with our network of partner bike shops around the country for on-the-ground support, you are covered for anything a bike path can throw at you.
This is a question the designers and engineers of the FOCUS and BULLS bikes of this group test asked themselves. Instead of speccing them with the standard 500 Wh batteries, both have developed a sophisticated alternative. The idea: instead of riding around with unnecessarily large batteries and unnecessary weight on short tours, they integrated a smaller 375 Wh or 378 Wh battery into the bike. If you don’t have enough power for long loops, you can double the range of both bikes with an additional battery for up to a full 750 Wh. While the second battery is mounted in the front triangle of the FOCUS, it disappears sideways in the downtube of the BULLS. In practice, you’ll need the second battery relatively often with both bikes, and in either case, you should consider the additional € 499 investment in a second battery pack when you buy the bike.

As a serious,but aging cyclist, have been considering the purchase of an electric assist bike for some years. My primary concern was that the bike needed to provide enough power to assist me to tackle some very steep hills and my weight is near 220 lbs. Having no experience with electric assist, I anticipated the 500 watt motor rating of this ... full review
Here is your experience amplifier: Spectral:ON gives you more trails per hour. The RockShox Yari RC suspension fork offers the steering precision and rigidity you need for e-biking with its 35 mm thick stanchions, the RockShox Deluxe R shock absorbs at the rear of any obstacle. For the wheels you can rely on the DT Swiss H1900 Spline wheels with reinforced hubs, freewheel bodies, spokes and rims, specially developed for the E-MTB. Schwalbe tires combine top traction with low rolling resistance. Magura's MT Trail Sport brakes with 203mm front and rear rotors will stop you when you need to. With Spectral:ON 6.0, your greatest adventures are yet to come.
Weight isn’t anything like a critical as one would assume. Weight distribution however is a different matter and this is where geometry, specifically the ratio of the front centre measurement to the chain stay length really comes into play. Battery placement is important too, and smaller batteries give an edge in the handling stakes while robbing the bike of range.
Fat E-Trike from Sun and E-BikeKit™ at Interbike 2014 Fat bikes and electric bikes were all the rage this year at interbike in Las Vegas. It seemed almost every bike vendor at the show has at least one fat bike model in their booth this year. On top of the fats were the electric bikes. And I think it goes without saying that nobody wants to actually pedal a fat...

Alec wants your wheels to be strong and true when they leave our doors, and a well-built wheel will stay that way for years.  Alec would rather be outdoors, but he comes in to E-BikeKit each day to make sure that you’ve got what you need to make your own outdoor adventures happen. A day when Alec can keep you rolling down the road and enjoying your bike is a...
The three bikes we tested all use a different e-bike motor system, and the controls, the primary user interface, are an important element that we rated but didn't weight as heavily as some of the others. Each motor system and their associated controls are different. Our primary interest is in how user-friendly is it to interact with the system, how intuitive and ergonomic are the shifters, how good and easy to read is the display, and how easy is it to charge the battery? Each drive system also has a smartphone app that is intended to allow the user to fine-tune the motor's support settings, create custom settings, monitor battery charge and health, and a whole lot more. While we don't feel the apps are necessary for the use of any of these e-MTB's, those with an affinity for technology or personalizing your ride may be inclined to use them.

Getting an e-bike can dramatically increase how often you ride, according to a recent survey of nearly 1,800 e-bike owners in North America. Beforehand, 55 percent of respondents said they rode daily or weekly. After buying an e-bike, that number soared to 91 percent. It makes sense: Even if you’re super fit, you still get tired (likely from training or racing) and remounting your bike can feel like a chore. If you have an e-bike, you can continue riding while giving your knackered legs a bit of a break. You can also go faster, which makes biking for longer trips more attractive, even when you’re pressed for time.
In full-electric mode, the Pedego City Commuter Classic Electric Bike is capable of moving at up to 20 mph for anywhere from 15 to 30 miles. There are two further options: power-assisted pedaling or fully "unplugged” riding. Renowned Shimano gears are easy to select. Seldom do we come across a product so universally praised by owners. It's not cheap, but comments like "Everything I hoped for!" and "Outstanding!" tell us that it's money well spent.

On mine I got the Topeak front and SKS rear mud guards, an Axiom rear rack, front and rear lights. They didn’t have a headlamp with the lumens I wanted, so Tommy the owner went ahead and ordered one for me! He was always available for any question I may have had through his mobile phone, and updated me with pictures showing me different possible setups to see if I would like it.


25 Mile 36V 250W Swytch eBike kit - for standard front forks (100mm). Instantly turn your regular bicycle into a state-of-the-art eBike with the Swytch conversion kit. Simply replace your regular front wheel with our compact and lightweight 1.5kg hub motor wheel. The handlebar-mounted power pack weighs just 2.5kg and can be attached instantly providing power assistance up to top speeds of 15mph (EU) or 20mph (USA). Also includes easy-fit pedal and brake sensors - simply start pedalling to receive motor assistance, and pull your brakes to for instant motor cut-off. Battery includes a UK/USA/EU charger depending on your region.
A stealthy, long travel, all-mountain electric bike with longer wheel base and adjustable seat stay hardware to optimize geometry for climbing and descending, proprietary "Active Braking Pivot" rear suspension reduces skipping, Knock Block headset and Hartzell Hug impact-absorbing downtube bumpers allow for straight downtube. Trek-invented Boost hub spacing improves spoke bracing angle and support for larger plus sized tires,…...

Powered by a 250-watt Brose Centerdrive system, the Redux is capable of reaching speeds of up to 28 mph, which comes in handy when dodging traffic. Its 36-volt lithium-ion battery provides enough juice to give the bike a range of up to 80 miles between recharges, making it a great option for daily commuters. Raleigh even outfitted the bike with wide tires which provide stability and traction, even when the road gets wet. Other key features include a 10-speed Shimano crankset and shifters and a built-in LCD screen that displays all the usual information.

This Saturday, Oct. 7, Tim Sway will showcase his “UpTriCycle” at the Greater Hartford Mini Maker Faire. Sway calls the UpTricycle an “off grid, electric, solar charging mobile maker space and carrier for upcycling makers.” He uses minimal tools and footprints in his creation for unlimited potential. On his YouTube page, Sway made a comparison video between a gas-powered trike and an electric trike. He purchased a gas-powered trike first,...

Back Alibi Allez Allez Junior Amira Ariel AWOL Camber Chisel Crossroads Crosstrail CruX Demo Diverge Dolce Enduro Epic Hardtail Epic Fatboy Kids' Fat Bikes Fuse Hotrock Langster Pitch P.Series Riprock Rockhopper Roll Roubaix Ruby Ruze Sequoia Shiv Sirrus Stumpjumper Shiv TT Tarmac Turbo Como Turbo Kenevo Turbo Levo FSR Turbo Kenevo Turbo Vado Venge


Power delivery is smooth and easy to predict, once you get the hang of it. We’re not sure if integration is better on the Turbo road bike, or if the slow, technical nature of trail riding just highlights some quirks. The motor shuts off less than a second after you stop pedaling, and the onset of power delivery is momentarily delayed once you begin pedaling. And this did mean we had to adapt our riding style a little bit to deal with that slight lag. 

We're adamant believers that the best way to mix up your fitness routine is found on two wheels. And with a lightweight frame for hard workouts, and a fit born from Body Geometry science that makes the bike feel like an extension of your body, the Men's Sirrus must be considered a key player on your fitness team. Go ahead and crank that intensity dial to 11—the Sirrus is ready to help you get fitter, stronger, and to become the better version of you.

For those who know the brand, Ducati makes lust-inspiring road motorcycles, covering the range from scramblers to naked bikes to sport bikes. They’ve topped podiums globally, appeared in too many movies to name, and in some cases have ended on display in art galleries. But like everyone in the motorcycle business, the company is challenged by global changes and is looking to capitalize on its valuable brand. Likely it was challenged to by its corporate overlords, as the Ducati company was acquired by Audi and hence VW in 2012.
Alright guys and gals, it’s 2018 and there are more choices for electric mountain bikes than ever before. Nearly every major brand has significantly expanded their lineups. This means that you’ll get better bikes at better price points. Still not sure if you should upgrade to an electric mountain bike? It’s the 21st century people! As the crew at Bulls says, “it’s not cheating, it’s just more fun.” The point of these bikes is not ruin other people’s fun by going at unsafe speeds, it’s to make your ride easier and your day last longer! Check out our top 10 electric mountain bikes for 2018 to see which bikes will get you out on the trails for thousands of miles.

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Haibike ships the HardNine with 29-inch tires, 180-millimeter hydraulic disc brakes, a 100-millimeter front suspension fork, and a nine-speed Shimano shifting system. The bike’s LCD readout is affixed to the handlebars and displays the current speed, level of charge, remaining range, and current pedal assist mode. The company says the battery can be completely recharged in just four hours, minimizing downtime between rides.
No day or ride is the same. Monday could be morning park laps, while Saturday might mean a day in the woods. If this is familiar, you need a bike like the CrossTrail. It has a responsive, durable aluminum frame, while our Body Geometry Fit science and a Multi-Circuit Damping fork ensure comfort over any terrain. Put it all together, and you have a bike that's just as versatile as yourself.
Merida has done an amazing job with the EOne-Sixty 900E. It has a fun, playfully ride quality that few ebikes can match, and the price is simply unbeatable. It’s also the only sub 50lb bike in this test, and that’s without a single strand of carbon. It could be even better though. With a two degree slacker head angle and a little more power from the Shimano motor the EOne-Sixty would be able to keep up on the climbs, only to drop the competition on every descent. The biggest issue though, is actually getting hold of one.
Over several months, our team of four professional mountain bike testers rode each of the electric mountain bikes in our test selection on a variety of trails and terrain in a range of weather conditions. We had each tester ride each of the bikes numerous times, often riding the different models back to back for the sake of comparison. We didn't go easy on them. Instead, we treated them all as if they were our own, putting them all through the wringer to identify their strengths and weaknesses. We scrutinized every aspect of each e-bike's performance and scored them all on several rating metrics, e-bike controls, downhill performance, uphill performance, power output, and distance range. Each metric are described in greater detail below. It is important to note that during our testing our impressions of these e-bikes changed dramatically. Our first impressions didn't exactly stick. It was essential for us to test the different models head-to-head and make direct comparisons to flush out the differences. For example, everyone was initially a little underwhelmed with the Specialized's power and more excited about the Haibike, but after hundreds of miles of testing our impressions changed. We go into more detail on this below.
Stop and go with care. Because you’re heavier and faster, it will take longer to slow down and stop. Squeeze your brakes well ahead of intersections. Remember that the bike will accelerate faster than normal, so don’t start pulling out into traffic until it’s fully clear. Also, because the bike has some heft, you may feel wobbly the first few times you get going or slow to a stop. Practice mounting, dismounting, and stopping in safe places before hitting heavily trafficked roads.
The distance range of an electric mountain bike refers to the distance you can travel on a single battery charge given a specific set of circumstances. All of the e-bikes we tested have roughly the same battery storage capacity, but outside variables like rider weight, pedaling input, terrain, trail conditions, and weather conditions may all affect the length of time or distance that a battery charge will last. To compare the distance range of the four models in our test we took the bikes out in their highest support setting and did out and back laps on the same trail until the batteries ran down from fully charged to completely dead. When we finished we recorded the distance and vertical gain that each model was able to complete and easily and objectively determined our winner.
BattleBots legend Christian Carlberg and his company C2 Robotics are using Electric Bike Technologies direct drive hub motors to power 'OverDrive', their latest BattleBot on ABC!   Team C2 Robotics is set to battle again tonight at 9pm EST on ABC! For the past two decades Christian Carlberg and the C2 Robotics Team have been making remote control mobile platforms for commercial, military and the entertainment industries. With the advance of brushless...
The removable 460 Wh battery is hidden in the downtube, and the custom-built-for-Specialized Brose motor is integrated around the bottom bracket, and develops 250 watts of power. A torque sensor detects when you’re applying pressure to the pedals, and provides assistance when you need it. Aside from the glowing green LEDs indicating charge levels and output settings, there is little indicating this Turbo is anything but a typical mountain bike. 
Haibike ships the HardNine with 29-inch tires, 180-millimeter hydraulic disc brakes, a 100-millimeter front suspension fork, and a nine-speed Shimano shifting system. The bike’s LCD readout is affixed to the handlebars and displays the current speed, level of charge, remaining range, and current pedal assist mode. The company says the battery can be completely recharged in just four hours, minimizing downtime between rides.
Mountain electric bikes can even be used for commuting to work or going to the grocery store.  When choosing a mountain eBike, make sure that you pick one that has at least 500 to 750 watts of power. Having a powerful motor to assist you on the trail will keep your legs from being sore at the end of the day. This will ensure that you get the most out of your bike and be able to drive across rocks and logs with ease. 
The Espin is powered by a 350-watt motor that’s rated for trips up to 50 miles (depending on the terrain and assist level). Once depleted, the battery fully charges in roughly five hours. Thankfully, Espin makes it easy to remove the battery, allowing you to quickly recharge it at home or in the office between trips. A backlit LCD control hub displays your basic metrics and battery life while in transit and LED headlights add a touch of light when needed.
Bicycles featuring pedal power were developed during the subsequent decades of the 19th century, with the most emblematic example being the bicycle we know today as the Penny-Farthing. The bike was named based on the substantial difference in its wheel size resembling the larger and smaller Penny and Farthing coins, respectively. These bicycles were wildly popular among the well heeled upper classes of Europe and America despite their penchant for launching riders head first over the large wheel, not to mention their relative difficulty to mount and dismount.
Whether you need to fly uphill with ease, rip downhill terrain at speed, or your rides simply demand all of the above, we've designed and engineered every mountain bike in our line to be the best performing machines for the way that you ride. From ultra-lightweight XC hardtails to our World-Championship-proven FSR suspension designs found on our trail and downhill bikes, you'll find the ideal setup for your riding style.
While the first functional battery was developed in the year 1800 by Italian physicist Alessandro Volta, a practical battery would not be seen for several decades yet. By the end of the 19th century, practical and portable batteries were more widely available, this finally freeing the electric motor to be used in a wide new array of applications. It might come as a surprise, but the electric motor, battery, and a bicycle were first paired as far back as the 1890s. It would be approximately 100 years later that electric bicycle development finally entered the mainstream, but the technology and concept behind the electric bike were all in place generations ago.
As electric bike options continue to expand, more brands are integrating the battery more seamlessly. That makes them look sleeker (and more like a real bike). Batteries are expensive, so make sure there's a good way lock the battery to your bike if you'll be keeping it outside. Overall weight is important. Some battery and motors can add 15 pounds or more to the bike. With assist, you won't feel that much when you're riding, but you will if you have to carry your bike up stairs or lift it onto a bike rack.
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