The Blix Vika+ is a folding e-bike with a utilitarian execution: At nearly 50 pounds, it’s heavy for its size, and the folding mechanism isn’t as slick as other folding bikes we’ve tested. That said, it does fold into a small package and feels sturdy enough for riding between errands. The geared hub motor is adequately powerful and an included throttle makes it easier to get off the line. A rear rack, front and rear lights, and a kickstand come with the bike—it’s everything you need for zippy urban commuting.
It is a great e-bike which has a PAS feature. This means, that the bike is secure enough for riding for beginners and the motor is adjustable to your needs. It is a lightweight and simple e-bike.  The price is really astonishing for normal size electric bicycle. Another thing to mention Jasscol has disc brakes which are not so common on cheap bicycles. Read the full review here.
One of the primary purposes of an e-bike is transferring power from the motor to the drivetrain to "support" your regular pedal stroke. All of the different drive units do this in relatively the same way, although subtle differences in their power output make them all feel slightly different. It is important to note that all of these systems work pretty well; the differences between them are relatively subtle but noticeable. We tested this metric primarily based on feel, as opposed to any sort of scientific measurement, and our testers could all notice the differences between the various models. All of the e-bikes we tested have several support modes offering varying levels of pedal assist support.
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.

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