E-bikes can be a useful part of cardiac rehabilitation programmes, since health professionals will often recommend a stationary bike be used in the early stages of these. Exercise-based cardiac rehabilitation programmes can reduce deaths in people with coronary heart disease by around 27%;[55] and a patient may feel safer progressing from stationary bikes to e-bikes.[56] They require less cardiac exertion for those who have experienced heart problems.[57]
We're gald to announce that we finally released the new 1500W BEST system. The new motor has been possible thanks to the manual winding which offer enhanced performance. With a top speed of 60km/h on a standard 27.5" mountain bike, a torque of 150Nm, and a maximum power of 2200W ( with the 48V battery) the BEST 1500 sets new standards for high performance ebikes. It's possible to buy just the motor and controller, and combine them with a custom battery up to 72V for a maximum power of over 2800W. In addition to that, the system has the full connectivity with the Smartbox module: by your smartphone you can change the motor settings to match your daily needs.  Beyond the Limits.

The other thing to consider is that this is a Kickstarter project, so you aren’t directly purchasing from the company, but rather “backing the project” in exchange for a bike. Technically, Stark Drive, or any Kickstarter creator, could cut and run with the money, leaving their backers without legal recourse. In this case though, Stark Drive has already run a successful crowdfunding campaign for their previous bike and demonstrated their ability to deliver, so this is probably at least somewhat safer than a brand new Kickstarter start-up.

There are two main types of motor to suit different riding styles. The durable, "heavy duty" Direct-Drive motor, and the lightweight, efficient and fast "performance" geared motor. Electric Bike Motors, hub motors in particular, and electric bike batteries are what make electric bicycles go. Using a hand throttle you control the flow of electric current from the battery to the brushless motor. With an intelligent 20 Amp controller regulating the...
“Even if you deal with the tubing supply chain and consumer retail price tolerance, there is no supply chain here for the cables, shifters, crank sets, chains, saddles, and every other part. It would take decades to set all of this up, but you would first have to get consumers to the point where they will pay $1,800 for the bike that they could get for $400.”
Although ebikes are easier to use in some instances, such as climbing hills, there are safety concerns. Because the bikes are heavier than traditional bikes, balance can be a problem. And, of course, ebikes allow people to cycle at higher speeds than usual. “A normal rider will average between 12 to 15 mph, where an ebike rider will average between 15 to 20 mph,” Abadie says. An increase in the number of deaths of elderly male ebike riders in the Netherlands has been attributed to their overconfidence in being able to ride at high speeds and to mount and dismount the bikes.
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]
This bike is designed for quick handling and high speeds, and not for comfort per se. The Focus is all about form following function. This is both good and bad: you have a bike that is sleek, powerful and nimble, but you also are going to be crouched over the front wheel for better control, gripping no-nonsense grips and riding a saddle meant for performance, not cruising.
The Nuvinci hub system is the best geared hub that I have ever used. There is literally no maintenance to be done on this drivetrain. I’d recommend buying it with the Gates Carbon belt because you’ll never run into issues like the chain falling off. You operate the Nuvinci system with a grip shifter and can of course shift even when you’re not moving.
Because e-bikes are capable of greater speeds for longer periods of time than standard bikes, you want extra control. Wider tires provide traction and some bump absorption with little penalty. You also want strong brakes to slow you (and all that extra weight) easily. It's worth looking at the quality of the brakes and investing in bikes with better ones if you can.