There are various kinds and classifications of electric bikes on the market, but the most common type is the Class 1, or pedal assist, bikes which have motor units that are activated by pedaling and are limited to lower speeds. In the US, Class 1 electric bikes, the type tested and reviewed here, are limited to a top speed of 20 mph, and their motors are designed with a speed governor to regulate this. These types of e-bikes resemble modern mountain bikes, but they have significant battery packs, and small motor units integrated onto and into the frame design. The e-MTB pedal-assist motor is typically built around the bottom bracket and provides varying levels of pedaling "support" directly into the drivetrain while the cranks are turning. Most drive unit systems offer several support settings that provide pedal assistance between 25% and 100% of the user's pedaling input.
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.
The Ultra Mid Drive Bafang motor is the best motor there is and due to it’s high cost most other brands have not adopted it yet. The ‘Ultra’ has torque sensors built in so it knows how much power to give you based on how much pressure you are applying to the pedals, so it intelligently gives you the right amount of power when you need it most and not a predetermined power regardless of what terrain you’re tackling, so you have more control.
The 13amh battery is nestled at the down tube frame on a battery bracket, which you can remove quickly if required. The battery is powerful enough to provide life juice to the bike for a long distance. The trip distance is 25 miles in full electric mode and 50 miles on the assist pedal. The battery comes with a 48V 2.0A charger and it survives more than 500 times of recharge cycles.
100% Down with this Ebike Movement, May 30, 2017 I had a massive heart attack 7 miles into a 15 mile... ride on my Stache 9.6 (love that bike). I had to be rescued by the Sherif's department and rushed to the ER. My heart was in bad shape and I thought I was finished riding bikes. 6 months later I am riding averaging 6- 10 miles a day thanks to my e-bike.Trek Powerfly 5. I will buy another Ebike and love the fact that you guys are covering this great addition to the bicycle Community. See More