Firefox Adventron 27.5 Electric Bike: ChooseMyBicycle.com Expert Review

The Firefox Adventron is built on a full Alloy frame. This is the first and currently only available Electric Bicycle in the Firefox range. The frame geometry was standard with a downward slanting top tube which gave the rider that extra bit of standover clearance and the overall shape of the frame helped with having an upright posture which was perfect for fitness rides and commutes. The Suntour front suspension fork comes with an impressive 100mm travel which is more than enough to tackle the bumps and speed breakers on city roads. The suspension lock-out feature on this E-Bicycle helped in riding faster on flatter surfaces.

The Adventron which I test rode came in a full Black primary colour on the frame with Yellow, Red and Silver as the secondary colours for the graphics. The suspension fork was Black in colour which was a good match to the full Black frame colour. The matte finish paint job was of great quality with a smooth premium finish to it. The semi-integrated battery is the best design feature on the Adventron. The seamless designed battery sits in the carved down tube and merges with it, without any outside protrusions. The front LED lights had a simple and neat design and useful safety additions on this E-Bicycle. This front LED light is powered by the E-Bicycle’s battery.

This Electric Bicycle comes with a 1x7-Speed drivetrain with a Shimano Altus rear derailleur. Whilst it is not a compulsion to have gears on an Electric Bicycle, it is useful when wanting to match the electric speed of the E-Bicycle with the pedalling cadence. It also helps when you run out of battery power during a ride as the gears help in controlling the pressure you want to put into pedalling. The 7-Speed Shimano Altus rear derailleur was smooth in shifting during the test ride. This Altus rear derailleur is controlled by Shimano’s SIS 7-Speed shifter.

The Firefox Adventron Electric Bicycle runs on a rear hub BLDC 36V 250W rear hub motor. This motor is powered by an 8.7Ah Lithium-Ion battery. The battery is semi-integrated on the frame, on a carved bottom tube which makes it easy to install and remove. The Throttle on the right grip was easy to use and also brought out the fun factor on this E-bicycle. The 3 level Pedal Assist termed Low, Medium and High give three different levels of power assist from the battery for each pedal. The LCD controller on the left side of the handlebar bar has the On/Off button, Pedal Assist level change and a USB port on the side for charging your mobile phone. The maximum speed using battery power is 25Km/hr.

With 1 full charge this battery is capable of giving up to 50kms in Pedal Assist mode and 30-35kms if used only in Throttle mode. These mileages may differ with varied riding conditions, and rider weight. This battery takes 4.5-5 hours to charge from 0 to 100% with any normal Indian plug point. The charging point is on the battery pack itself and is easy to charge as this is a detachable battery.

This Electric Bicycle’s stopping power is controlled by Tektro branded Mechanical Disc brakes at the front and rear. Both these brakes were powerful enough to get the bicycle to stop safely and quickly at 20-25 Km/hr.

The Alloy riser handlebar on this E-Bicycle along with an adjustable stem made it perfect for the rider to get a comfortable riding posture. The grip throttle on the right was smooth and easy to accelerate.

The 27.5” x 2.1” MTB tires on the Adventron were fast rolling on smooth and rough urban roads and were perfectly suited for an Electric Bicycle when riding at 25km/hr. The width and treads were perfect to give good traction on wet roads.

The Saddle has seen a considerable upgrade from Firefox’s non Electric Bicycles with this one having a padded cushion which makes it as good as having an external gel/foam seat cover. Rest assured there will be no saddle soreness with the Adventron.