Wisper 705 26-Inch Step-Through 2024 Electric Bike

The Wisper 705 Step-Through ebike is well styled and features a very adaptable unisex design that provides , as well as representing excellent value for money. The 705 Step-Through is Wisper’s go-to ebike for most riders, with multiple frame sizes, as well as a choice of battery, power unit and colour options to choose from.

The Wisper 705 Step-Through the perfect choice for shopping, commuting or long country rides.

What's The Difference In Power Delivery?

Cadence Sensor

Cadence sensors turn the power on when pedals are turned forward and turn the power off when pedaling stops.

It will take between ¼ and ½ of a complete revolution of the pedals before the power is turned on.

Torque Power Pack

Torque sensors recognise when and how much pressure is being put onto either pedal. Power will increase as the pressure on the pedals increases.

Power is available immediately pressure is put onto either pedal.

The Operation Of The Cadence Sensor And Torque Power Pack

Cadence Sensor

The magnetic disc can be seen on the standard equipment bikes, it is a part of the cadence sensor system and sits on the inside of the right hand crank by the bottom bracket axle. It simply tells the bike when the pedals are being turned forward at which point the power switches on. When a rider stops pedalling, the magnets stop passing the sensor and the power turns off.

Cadence sensor bikes require three magnets to pass the sensor in the correct order (pedals turning forward) before the power is switched on, magnets must keep passing by the sensor in or the power will turn off again. If the pedals stop turning, the bike will recognise this in a small fraction of a second and the power will turn off, hence the reason we do not need vulnerable brake cut outs.

Torque Power Pack

• A more natural riding experience
• Immediate power when the pedals are pushed
• Quieter motor sound
• Up to 30% more range

On Wisper bikes fitted with the Torque Power Pack bikes the torque and cadence sensors are housed inside the bottom bracket where the pedals are connected through the bike frame.

The Wisper Torque system works in a completely different manner to the standard Wisper. Through the torque sensor the system measures the pressure a rider is putting onto the pedals. Pressure on the pedals turns the power on and the torque sensor reads the amount of pressure being exerted. The more pressure a rider puts onto the pedals the more power will be demanded from the motor.

So… if the bike is starting from standstill, encounters a hill, a strong headwind or if the bike is heavily laden, the torque sensor will recognise that more pressure is being put onto the pedals and the bike will offer more powered assistance. It’s very simple and very clever!

Drive System

The new Wisper Hybrid Torque drive system is designed to deliver maximum power to the bike’s rear wheel smoothly, quietly and efficiently.

Because of the efficiency of the two sensors the range on a Wisper Torque is up to 30% greater than on our standard models.

Lithium Battery

• 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%

Features Of The Torque Power Pack

Seamless Delivery Of Power/h4>

The new Wisper Hybrid sensor cleverly splices information from the torque and cadence sensors, producing a seamless riding experience. Our patented software enables the controller, sensors and motor work together in perfect harmony, creating a seamless delivery of power.

Increased Range

The increased efficiency of the system means a rider can achieve up to 30% more range when compared to a cadence sensor alone.

Responsive

The combination of information from the two sensors coupled with the amazingly fast processing of data, ensures the new Wisper power system rapidly responds, to the Speed of the bike and the rider’s input, and riding style, creating a very natural riding experience.

Starting Assistance

The benefit of the Wisper Torque sensor can most be felt when setting off, especially on an incline. The software in the controller will recognise that the bike is stationary, so when the pedals are pushed down the bike will know the rider needs maximum assistance to get them going. It very much feels as if you have twisted a throttle. When the bike gets moving the cadence sensor recognises you are on the move so will gradually reduce the power. The rider will not feel the gradual reduction, the whole experience will feel very natural.

Silent Running

New sine wave technology coupled with the rear wheel drive, has the effect of making the new Wisper Torque system virtually silent despite it’s superb hill climbing capability.

Being positioned behind the rider any running noise from the motor becomes practically inaudible.

Hill Starts

The system starts and stops within milliseconds of putting pressure on, or taking pressure off the pedals. This almost instant reaction has two major advantages:

Starting on, and also climbing steep hills becomes much easier. Maximum power is available immediately depending on how much pressure is exerted on the pedal, negating the need for a throttle.

More Natural Riding Experience

Maintaining and controlling Speed is far less erratic, ensuring the riding experience is safer and more natural.

Reduced Wear On Chain Drive And Gears

The major benefits of the Wisper Torque rear hub system over centre drive systems are as follows:

Power is directly and efficiently applied to the rear wheel. This eliminates issues associated with chain stretch/wear and putting too much torque through delicate hub or derailleur gears. Companies such as Shimano do not recommend that more than 35Nm of electronic power is put through their systems.

More Power To The Rear Wheel

Our rear wheel direct drive hub system avoids the bicycle chain and gears, therefore, the whole 50Nm of available power can be directly applied through the rear wheel.

Better Grip

Positioning the motor and battery at the rear of the bike keeps the weight directly over the rear tyre ensuring a more positive grip, especially in wet or slippery conditions.

Specifications

Frame and Forks

Frame: Hand welded, 6061 Alloy T4 and T6 tempered Forks: Suntour NEC with pre-tension

Drivetrain

Rear Derailleur: Shimano 7 Speed derailleur with 7 Speed selector

Braking/Shifting

Brakes: Hydraulic 180mm disc brake front and 160mm rear Shifting: 7 Speed selector

Wheels

Wheels: Alloy double walled 26” x 1.5” Tyres: Kenda 26” 1.95 high puncture resistance with wall reflector

Finishing Kit

Saddle: Wisper comfort Kick stand: Black anodised alloy Mudguards: Black Full length, shatterproof Rear Rack: Wisper’s unique rear battery rack, certified to 25kg

Battery Power

Motor: Wisper High efficiency, 250W hi torque brushless motor Lighting: Front: 15W LED super bright, Rear: 36V light, power from bike battery Controls: Wisper Back lit LCD display