Controllers for brushed motors: Brushed motors are also used in e-bikes but are becoming less common due to their intrinsic lower efficiency. Controllers for brushed motors however are much simpler and cheaper due to the fact they don't require hall sensor feedback and are typically designed to be open-loop controllers. Some controllers can handle multiple voltages.
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.
There are individuals who claim to have lost considerable amounts of weight by using an electric bike.[62] A recent prospective cohort study however found that people using e-bikes have a higher BMI.[63] By making the biking terrain less of an issue, people who wouldn't otherwise consider biking can use the electric assistance when needed and otherwise pedal as they are able.[64] This means people of lower fitness levels or who haven't cycled in many years can start enjoying the many health benefits E-bikes have to offer. [1]
Ironically, not only would a US e-bike manufacturer need to import the raw materials for their frames, but they could still be subject to import tariffs that the Trump administration has placed on imported steel and aluminum from China. Thus, the e-bikes could end up even more expensive than just US-built e-bikes, as customers would also have to pay for the higher cost of the imported raw materials.
Featuring Bosch’s newest CX Drive motor, the Trekking has enormous torque (that equals acceleration) compared with the rest of the bikes on test. From a standing start the Haibike reaches the 15.5mph European speed limit in seconds. Pair this with mid-sized 27.5in wheels and laid-back mountain-bike geometry, and you have a grin-inducing almost motorbike-like riding experience. This is accentuated off-road, where a rider’s lower average speed is under the motor cut-off point for more of the time, so suddenly the hefty Trekking makes complete sense.
The way they work is pretty simple: The motor kicks in with extra assist when you pedal, and there are different levels of assistance. That's it. Just turn it on, pedal, and go! You can also turn the assist mode off and ride it like a regular bike. And e-bikes stop assisting at a certain speed (in the U.S., it's 20 mph or 28 mph depending on class) for safety, of course.

The F1-trained engineers at William Advanced Engineering assisted with the electrical parts and the result is a 250W motor that provides pedal assistance via the front hub – which is a highly unusual approach –  drawing power from a 300Wh battery pack that sits in a bag and goes on the front where the Brompton luggage rack would normally sit. You can also opt for a larger bag that holds both the battery and your spare suit or laptop or whatever. 

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.
Electric bikes are categorized by classes: Class 1 ebikes are pedal-assist cycles with a top speed of 20 mph. (Some localities have banned Class 2 and Class 3 ebikes, which are throttle on demand.) The trick to using a Class 1 bike is to, well, pedal. “If the pedals stop, the bike doesn’t go,” says Saltvold, who describes using an ebike as akin to running on a moving walkway in an airport terminal. Whitaker notes that customers say they switch off the pedal-assist to get more exercise, then turn it back on when going up a hill or wanting to increase their speed.
A Kalkhoff Pedelec is a lot more than simply bolting a motor onto a great bike. Their electric-assist bicycles utilize a brushless DC motor system that is lightweight, precisely-controlled, efficient, low-maintenance, and reliable. The Panasonic drive system is center drive, meaning that it's designed to be in the middle of the bike for a low center of gravity, stability and an easy integration with the drivetrain. The drive unit is more than just a motor; it also has a torque sensor and controller unit as well - all in the weatherproof casing, surrounding the motor. The torque sensor and the controller senses how hard you're pedaling and adjusts how much assistance the motor gives you through the drive sprocket.
{"id":466985713703,"title":"SONDORS Original (In-Stock US\/Canada Only)","handle":"sondors-original-us-canada-only","description":"\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eWith its spectacular, knobby, all-terrain tires, SONDORS Original provides all-around comfort and sturdy confidence. Whether you’re commuting to work, meeting friends, or out exploring nature, SONDORS Original steals the show. This eye-catching versatility matched with the lowest price tag in the industry has led SONDORS Original to become the best-selling electric bike in the United States. \u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cb\u003eORIGINAL FRAME\u003c\/b\u003e\u003cbr\u003e\n\u003cp\u003eSONDORS Original durable steel, 17.75” frame is one-size-fits-most.\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL BATTERY AND UPGRADE OPTION\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003eSONDORS Original includes a 36V 8.7 Ah lithium-ion battery and charger. SONDORS Original is also available with an optional 36V 12.8 Ah lithium-ion battery upgrade. This upgrade offers a more powerful version of the SONDORS Original by extending your ride with a 20-30% increase in range, and greater torque to further enhance your hill-climbing, acceleration, and towing capacity*. \u003c\/p\u003e\n\u003cp\u003e*Both range and power increase estimates are contingent upon rider and towing weight, wind speed and terrain.\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL MOTOR\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eSONDORS Original totes a 350W motor, providing more than enough to power your daily commute, a cruise on the beach, or a meander along your favorite trail. And with speeds up to 20 mph, SONDORS Original will get you there swiftly.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL TIRES\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eSONDORS Original is a showstopper - and its legendary, all-terrain tires are more than the reason. Measuring in at a chunky 26 x 4.9 inches, SONDORS Original tires keep it sturdy and versatile while conquering pavement, sand, dirt or snow.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eORIGINAL FRONT SUSPENSION UPGRADE OPTION\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eA high-performance, shock-absorbing, non-adjustable, front suspension fork can be yours to take your SONDORS Original riding comfort to the next level. You can expect better handling, improved cornering capabilities, and an overall smoother riding experience. (*Please note: adding suspension fork can increase overall weight by approximately 10lbs.) \u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL LCD SCREEN UPGRADE INCLUDED\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003eThe 2018 SONDORS Original comes standard with LCD screen upgrade - this feature supplies five levels of electric pedal assist plus added torque for increased hill-climbing power, greater range, and improved towing capacity. In addition, the LCD screen provides a digital display offering accurate battery level and distance traveled.\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL RANGE\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003eWith the use of the included SONDORS Original 36V 8.7 Ah lithium-ion battery along with electric pedal assist, many riders can experience a varied battery range of up to 25-40 miles*. When using straight electric power (without pedaling), the range can fluctuate to up to 20 miles*. \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSONDORS Original, 36V 12.8 Ah battery upgrade provides an approximate increase in range of up to 30 miles* straight electric and up to 58 miles* using electric pedal assist.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e*Both range estimates are contingent upon rider and towing weight, riding style, wind speed and terrain. \u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL WEIGHT\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eSONDORS Original is built with endurance and adaptability in mind. It means business with its all-steel frame, all-terrain tires, and readiness to vanquish nearly any landscape. SONDORS Original has been known to inspire confidence as it rolls in with conviction at a total approximate weight of 60 pounds (depending on configuration*).\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL SHIPPING AND DELIVERY\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003eYou can rest assured, each component of your new SONDORS is carefully wrapped in heavy-duty protective materials and packed with love in our famous SONDORS ultra-thick, 7-layered \"motorcycle-grade\" box. The purchase of your new SONDORS includes hand delivery to your door via U.P.S. ground shipping for oversized packages within the contiguous United States.\u003c\/p\u003e\n\u003cp\u003ePLEASE NOTE: Shipments to Alaska, Hawaii and Canada will incur an extended area surcharge at checkout. 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Whether you’re commuting to work, meeting friends, or out exploring nature, SONDORS Original steals the show. This eye-catching versatility matched with the lowest price tag in the industry has led SONDORS Original to become the best-selling electric bike in the United States. \u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cb\u003eORIGINAL FRAME\u003c\/b\u003e\u003cbr\u003e\n\u003cp\u003eSONDORS Original durable steel, 17.75” frame is one-size-fits-most.\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL BATTERY AND UPGRADE OPTION\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003eSONDORS Original includes a 36V 8.7 Ah lithium-ion battery and charger. SONDORS Original is also available with an optional 36V 12.8 Ah lithium-ion battery upgrade. This upgrade offers a more powerful version of the SONDORS Original by extending your ride with a 20-30% increase in range, and greater torque to further enhance your hill-climbing, acceleration, and towing capacity*. \u003c\/p\u003e\n\u003cp\u003e*Both range and power increase estimates are contingent upon rider and towing weight, wind speed and terrain.\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL MOTOR\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eSONDORS Original totes a 350W motor, providing more than enough to power your daily commute, a cruise on the beach, or a meander along your favorite trail. And with speeds up to 20 mph, SONDORS Original will get you there swiftly.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL TIRES\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eSONDORS Original is a showstopper - and its legendary, all-terrain tires are more than the reason. Measuring in at a chunky 26 x 4.9 inches, SONDORS Original tires keep it sturdy and versatile while conquering pavement, sand, dirt or snow.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eORIGINAL FRONT SUSPENSION UPGRADE OPTION\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eA high-performance, shock-absorbing, non-adjustable, front suspension fork can be yours to take your SONDORS Original riding comfort to the next level. You can expect better handling, improved cornering capabilities, and an overall smoother riding experience. (*Please note: adding suspension fork can increase overall weight by approximately 10lbs.) \u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL LCD SCREEN UPGRADE INCLUDED\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003eThe 2018 SONDORS Original comes standard with LCD screen upgrade - this feature supplies five levels of electric pedal assist plus added torque for increased hill-climbing power, greater range, and improved towing capacity. In addition, the LCD screen provides a digital display offering accurate battery level and distance traveled.\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL RANGE\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003eWith the use of the included SONDORS Original 36V 8.7 Ah lithium-ion battery along with electric pedal assist, many riders can experience a varied battery range of up to 25-40 miles*. When using straight electric power (without pedaling), the range can fluctuate to up to 20 miles*. \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSONDORS Original, 36V 12.8 Ah battery upgrade provides an approximate increase in range of up to 30 miles* straight electric and up to 58 miles* using electric pedal assist.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e*Both range estimates are contingent upon rider and towing weight, riding style, wind speed and terrain. \u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL WEIGHT\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eSONDORS Original is built with endurance and adaptability in mind. It means business with its all-steel frame, all-terrain tires, and readiness to vanquish nearly any landscape. SONDORS Original has been known to inspire confidence as it rolls in with conviction at a total approximate weight of 60 pounds (depending on configuration*).\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eORIGINAL SHIPPING AND DELIVERY\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003eYou can rest assured, each component of your new SONDORS is carefully wrapped in heavy-duty protective materials and packed with love in our famous SONDORS ultra-thick, 7-layered \"motorcycle-grade\" box. The purchase of your new SONDORS includes hand delivery to your door via U.P.S. ground shipping for oversized packages within the contiguous United States.\u003c\/p\u003e\n\u003cp\u003ePLEASE NOTE: Shipments to Alaska, Hawaii and Canada will incur an extended area surcharge at checkout. (Alaska and Hawaii: $59.00 \/ \u003cspan\u003eCanada: $99.00 USD)\u003c\/span\u003e\u003c\/p\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cspan style=\"color: #990000;\"\u003e\u003cstrong\u003eIMPORTANT:\u003c\/strong\u003e All SONDORS shown here are available for delivery in \u003cstrong\u003eU.S. and Canada ONLY. \u003c\/strong\u003e\u003cspan color=\"#c92323\"\u003eFor SONDORS available in E.U., Norway and Switzerland, visit \u003c\/span\u003e\u003cstrong\u003e\u003cspan color=\"#c92323\"\u003e\u003ca href=\"https:\/\/sondors.com\/collections\/europe\" style=\"color: #990000;\"\u003eSONDORS Europe Collection\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e"}

Riding position: You also may wish to check out an e-bike’s riding position before investing in it. For short trips, the riding position might not make much difference, but for long journeys, the upright "Dutch" style with pulled-back handlebars is very comfortable – particularly for tall riders. The same goes for mountain bike styles, though these bikes are not often designed to actually go off-road.


This bike is named the GSD because with it you can Get Stuff Done. Twenty-inch wheels keep the center of gravity low so heavy payloads—it's rated up to 400lbs—are easy to balance and a short (for a cargo bike) 70-inch wheelbase, similar to a standard single bike, make the GSD easy to maneuver. Designed with the urban commuter in mind, the bike can easily break down to 60 percent of its original size to fit into the back of a car and the rear rack doubles as a stand that allows it to stand upright to minimize space inside tight apartments. Put two child seats on the back and take the family along, or drop the seat and let you kid take the bike out himself—anyone from 4'10" to 6'5" can ride this bike. Last but not least, the GSD gives you the option of adding a second battery to extend your range up to about 150 miles on a single charge.
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