Table of Contents
The Vyron Cumulus Pro electric bike comes with high-value components that could provide enough comfort for commuting. What else could it offer?
EBA Note
This commuter e-bicycle was reviewed for free. There is no affiliation with the bike store where it was sourced from. I welcome any amendments or corrections to my review; please do so by posting a comment at the end of the article.
Thank You!
Specs Summary
MOTOR & TOP SPEED
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BATTERY & RANGE
Range with pedal assist (PAS):
Range with throttle:
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CONTROLLER & RIDING MODES
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FRAME
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DRIVETRAIN SYSTEM
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BRAKING SYSTEM
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OVERALL WEIGHT & CARRYING CAPACITY
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| TYRES AND SUSPENSION
Tyres
Suspension
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FEATURES
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Riding the Vyron Cumulus Pro
Motor experience
– The 500 W rear hub Bafang motor seems to have a very high power output, enough to provide the assistance level required, even when using PAS 1.
– The power of PAS 1 was higher than I expected, even when compared with what I tested in the XDS E-Cruz electric bike.
– I was amazed by the PAS 5 level. It was easy to take off and reach 25 km/h (maximum regulated) in less than five (5) seconds.
– Not much of a surprise when testing the highest level of assistance, PAS 9. As expected, it delivered a high power output after the first wheel spin. Even though I felt more power was provided, it was not too different compared to PAS 5.
– I believe the combination of the high power output and the torque (80Nm) rating of the motor will provide enough help to the rider when the e-bike is fully loaded.
– If you care about the noise of an electric bike motor, then Cumulus Pro could be annoying. I noticed the motor was slightly noisy, which is not a dealbreaker for me.
Learn More: Electric Bike Motor Guide 2024
Battery component
– The Samsung series was not bulky or too heavy. One interesting feature is the possibility of using its power to connect an external device like a smartphone.
– The battery range can be questionable. It was not easy to find out how far I could ride, no matter the assistance feature used. I would suggest sticking to the desired PAS level and playing with the gear system.
– Based on the battery specifications (48v, 17.5Ah), the maximum range could be approx. 80 km if using PAS1, whereas it could only be around 50 km if using throttle. These numbers are estimates. Many factors play a role in defining the maximum range, where the most important one is how much weight you carry.
Read More: eBike Batteries – The 2024 Beginner’s Guide.
Pedal assist and throttle experience
– Compared to the ANCHEER 20 Fat Tire Folding e-bike, the thumb control was effortless to operate and sensitive. I liked the degree of power the motor gradually delivered when pushing the device.
– I liked the possibility of using the throttle without the need to pedal. This, of course, must be carefully considered as it would not be within the Australian electric bike regulations.
Learn more: Electric Bike Regulations
– As expected, the motor assist is activated after the first wheel rotation. Thereafter, the motor gradually provides the push based on the watts output defined by the user.
The Display
– The Key-Disp LCD screen was less intuitive than the Bafang model installed in the XDS e-Spresso S2. I recommend looking at its operational manual as it offers many more features (voltage and motor output, maximum cut-off speed, power delivered per PAS, etc.).
– Even though the controller was not super intuitive, I think the screen was easy to read, considering the brightness of the day I reviewed this commuter electric bike.
– The step-thru alloy frame, which was designed for people between 150 and 185 cm tall, didn’t have anything special in terms of design. To me, it looked a bit squared and like any other standard bike frame, which in the end, is okay.
Other features
– In terms of the rear rack, it looked nice and sturdy. It was nice to see that you can attach a kid’s seat.
– In my review, I mentioned that this model was designed for commuting purposes but also pointed out that you can adapt other elements to make it like a cargo electric bike. This is a good advantage compared to other similar brand models, such as the Avento Pace 500, which didn’t have the frame design to do so.
– As for comfort, the SunTour XCM 30 provided more than enough shock absorption when riding on uneven ground and speed bumps.
– On the maneuverability side, the handlebar and grips felt easy to reach, even for a person with relatively short arms like me. I also believe the 27′ x 2′ CST all-terrain tyres made their part with the grip and comfort.
– Something I haven’t seen in many e-bikes is the steel bar that protects the drivetrain derailleur.
Safety devices
– On the safety side, this Vyron model comes with a front and rear light powered by the Samsung battery.
– Another safety feature is the brake sensor. I think this is an essential element to have, considering the throttle could be accidentally activated when riding, as it is sitting close to your thumb. The sensor will cut the motor assistance when pressing the brake levers.
– The Shimano eight-speed gear system is not the highest in quality from the brand, but it was responsive with smooth transitions.
– I was not too satisfied with the overall weight (~23 kg) of the Cumulus Pro. When doing the first pedal before the motor was activated, it felt heavier than I thought. Something to consider when doing lifting (tip: remove the battery if needed).
Responsiveness
– Something I pointed out to the brand was the sensitivity of the Bafang motor. I experienced the motor getting activated despite not pedalling or using the throttle. I don’t think the motor was faulty, possibly too sensitive to the movement of my legs bouncing on uneven terrain.
Is It A Good E-Bike To Look At?
– There are many commuter electric bikes in the market that are offering good value for money. I believe this step-thru commuter elected bicycle lands on this range.
Pros
– The power of the rear hub Bafang motor was impressive, and I was very content with how easy it was to pedal.
– I liked how the battery was placed in the downtube of the alloy frame. It makes it look reasonable and not ordinary.
– The cargo capability was impressive, with the rear rack rated 25 kg, which would be more than enough for a small child to be transported at the back.
– The comfort is acceptable, not only because of the front suspension’s quality but also the CST tyres’ thickness.
– The controller is as simple as you can get. As I mentioned, I advise you to look at the manual first to adjust the settings that best meet your purposes.
– The throttle device was responsive and provided the leisure of taking off from 0 to 6 km/h in less than two (2) seconds. If this doesn’t happen, be aware you could be fined.
Cons
– One thing to keep an eye on is the sensitivity of the motor activation. As I mentioned, it was getting activated without pedal or throttle use. Luckily, you have a brake sensor that will disengage the motor when pressing the levers.
– Considering the overall weight of 23 kg, it could be a hassle when adding extra elements like a front rack.
Overall, I think the quality of the components used in the Vyron Cumulus Pro electric bike makes it a competitive alternative if you are looking for a budget model.
