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.
There are individuals who claim to have lost considerable amounts of weight by using an electric bike. A recent prospective cohort study however found that people using e-bikes have a higher BMI. 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. 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. 
With most ebikes the choice of motor defines aspects of the frame geometry and to a lesser degree the suspension characteristics of the bike. Not with new Rock Mountain Altitude Powerplay. With its bespoke motor Rocky has been able to design an ebike that reflects the ride quality of a highly evolved 150mm trail bike. With instant power pickup, extended battery life and streamline proportions it’s not just the handling of the Rocky that will get you charged up for riding. It’s the best bike in this test by some margin, but we had an issue with the motor momentarily cutting and raising questions over it’s reliability.
Depending on local laws, many e-bikes (e.g., pedelecs) are legally classified as bicycles rather than mopeds or motorcycles. This exempts them from the more stringent laws regarding the certification and operation of more powerful two-wheelers which are often classed as electric motorcycles. E-bikes can also be defined separately and treated under distinct Electric bicycle laws.
More traction, more control, more fun—this is the philosophy behind the Ruze women's mountain bike. It pairs our 6Fattie wheel system with a design that makes climbing fast and efficient, while keeping things full-throttle on the descent. It's also tailored for women, with Women's Trail Geometry, a Body Geometry Myth saddle, and components that are specifically sized for women throughout the line. It's the ultimate trail hardtail.
Descents on such a heavy bike are less fun. Getting the rear wheel off the ground on short notice, or whipping it around turns is very hard. I like to use my rear tire and brakes to steer—locking the brakes in tight corners at speed, then letting off and pedaling out. On very loose and exposed trails, using that approach on the Turbo Levo doesn't work, once the rear starts to loose traction, it’s just all over. Perhaps this could be combated with lower rear tire pressures; we were running 20 PSI.
On the 8.0 specifically, Haibike sets you up with the brand new Yamaha PW-X motor. This motor comes standard with a 500 watt hour battery, Bluetooth connectivity, and 80 nm of torque out the gate. The PW-X also boasts the benefit of a dual chainring up front. This means you’ll save some battery if you’re willing to work a little harder and use those gears! Speaking of gears, you’ll get a Shimano Deore XT drivetrain. Pair that with Fox 34 Float Performance front suspension and a Fox Float DPS rear shock (150mm travel) and you’ve got a fully-capable, all-around ride.
Electric mountain bikes (eMTBs) are relatively new on the scene and mountain bikers are freaking out. “They shouldn’t be allowed on our trails.” “They are going to ruin the sport.” It reminds me of when the first mountain bikes started popping up on trails and hikers were panicking with visions of crazed bikers running them over. Well, their fears never materialized and mountain bikes have become popular tools for exploring the outdoors responsibly.
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
Last year, the Trek Powerfly 9 LT was one of the only ebikes with geometry and handling that came close to a modern enduro bike. For 2018, Trek has built on that winning formula with new frame. It’s lowered the battery in the downtube, while adding a stiffer Fox 36 fork, more powerful SRAM RE brakes and a stronger Bontrager wheelset. All welcome improvements to a really capable bike. The price has also crept up to reflect the changes. The biggest transformation however, is that Rocky Mountain has raised the ebike bar to a new high with the Altitude Powerplay.
Our twelve-person test team not only tested the most exciting eMTBs of the 2018 season in the cold German winter, but also took them to the south of France for two weeks (we will spare you the mandatory muddy photos at this point). We climbed to the top of peaks, rummaged through deep mud, rode over countless roots and ruts on the way up and even more on the way back down, laughed, cursed, lived through many unforgettable moments, and took the bikes – and sometimes ourselves – to the limit.
Pedelecs are much like conventional bicycles in use and function — the electric motor only provides assistance, for example, when the rider is climbing or struggling against a headwind. Pedelecs are therefore especially useful for people in hilly areas where riding a bike would prove too strenuous for many to consider taking up cycling as a daily means of transport. They are also useful for riders who more generally need some assistance, e.g. for people with heart, leg muscle or knee joint issues.