Wisper City and Trekking Bike Specification Options
Our standard e-bikes use a market leading cadence sensor that measures the speed that the pedals are being turned, providing responsive application of power. Cadence sensors switch the power on when pedals are being turned forward and off when pedaling stops. We also offer a torque sensor upgrade.
Torque Sensor Performance Pack upgrade
Cadence Sensor upgraded to BB Torque Sensor
Standard Controller upgraded to Sine Wave controller
Metallised “Torque” badge
More efficient power use
Quieter and smoother motor function
More natural riding experience
Immediate power, as soon as the pedals are pushed down
Up to 30% longer range
Instant power, especially useful on hills and pulling away from stand still
Better hill climbing
Very little or no motor noise
Innovative software Torque Power Pack cleverly combines information taken from the bike’s sensors to provide a seamless and natural riding experience. The benefit of the Wisper Torque Power Pack upgrade can be best experienced when setting off – especially on an incline. The moment you put pressure onto either pedal, the bike will react by gently engaging the motor. The more pressure you put onto the pedals, the more assistance you will receive from the motor.
Once the bike is underway the power assistance will gradually reduce until it’s needed again – such as when cycling up hills, entering strong head winds or if you need to accelerate. The efficiency of the Torque system increases the Wisper’s range by up to 30% when compared to the standard cadence sensor.
All Wisper bikes are fitted with a twist throttle that is limited to a 4mph walk assist mode whilst the bike is not being pedaled. However, as soon as you start to turn the pedals forward the throttle becomes active, by twisting the throttle you can achieve up to 15.5mph without the need to increase pedal effort.
Despite it’s superb hill climbing ability, our torque drive system is virtually silent and is almost undetectable with the high torque motor sitting unobtrusively behind the rear gear cassette.
Power and Control
All our e-bikes have 5 levels of power enabling riders to very easily increase or decrease assistance from the motor using buttons next to the handlebar grip. The powerful Wisper high efficiency 250w high torque brushless motor is smooth, quiet and works in harmony with the either cadence, or torque sensor to deliver a responsive, natural riding experience.
All Wisper bikes are fitted with a twist throttle limited to 4mph (walk assist mode) whilst the bike is not being pedaled. However, as soon as a rider starts to turn the pedals forward the throttle becomes fully active. By twisting the throttle grip a rider can achieve up to 15.5mph without the need to increase pedaling effort. The throttle is particularly useful on hills or when starting from standstill when immediate assistance may be required.
Wisper High efficiency,
250W hi torque brushless motor
Medium range 375Wh
Long range 575Wh
Mega range 700Wh
Total load, terrain, road surface, tyre pressures, speed, power setting used,
wind conditions, and motor power all have a huge bearing on range.
With this in mind, you may expect to achieve the following AVERAGE ranges.
Due to the number of outside factors affecting bike ranges, our published ranges are
estimated based on our experience and are not guaranteed.
375Wh battery 15 to 30 or 40 miles with TPP*
575Wh battery 25 to 45 or 60 miles with TPP*
700Wh battery 35 to 60 or 85 miles with TPP*
*By upgrading to our high efficiency Torque Power Pack range may be extended
by up to 30%
Wisper Back lit LCD display
Hand welded, 6061 Alloy T4 and T6 tempered
Suntour NEX with pre-tension
Black anodised alloy
SHIMANO 7 speed derailleur with 7 speed selector
Hydraulic 180mm disc brake front and 160mm rear,
Alloy double walled 26” x 1.5”
Kenda 1088 26” 1.95 high puncture resistance with Kevlar and wall reflector
Black full length shatterproof
Front: 15W LED
Rear: 36V light, power from bike battery
Wisper’s unique rear battery rack, certified to 25kg
Max Weight Loading Including Luggage
19 Stone / 120kg
Riders over 6′ or 182cm tall, please ask for 400mm seat-post when ordering.