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Guide to YObykes |
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INTRODUCTION
Electrotherm India Ltd., the promoter of the YObykes in India, is the leader in metallurgical equipment field. Established in 1982, Electrotherm has built a wide range of Electric Furnaces and revolutionised Steel Making, Melting and Refining in India. A ‘Solution Driven Company’, it has successfully installed over 1300 furnaces around the world and is known for its product quality and excellent customer service.
Backed by outstanding innovators and technocrats, the company maintains excellence and proficiency in the fields of Electrical Technology and Electronics. This expertise of Hi-Tech Electronics forms the basis of YObykes. |
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| BASIC WORKING |
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The rear wheel of the vehicle is driven either by an electric brush motor or a brushless hub motor. The drive is usually direct. |
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The variation in speed - acceleration or deceleration, is done through electronic accelerator which sends electronic signals through motor controller to the hub motor. This enables the rider to precisely and smoothly control speed. |
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The motor controller acts as the “brain” of EV and incorporates sophisticated electronic technology. |
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The accelerator is located on the right hand side grip of the handle bar, similar to petrol vehicles. |
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Brake levers are provided on both sides of the handle-bars as in non-geared petrol vehicles. An additional safety feature is that on applying brake, the power supply to motor is cut off. |
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Battery supplies the energy and therefore can be termed as ‘fuel tank’. The battery is suitably located on the vehicle, keeping in mind weight distribution, balance, etc. One full charge provides a ride of about 50 kms depending on riding conditions, weight carried and slope climbing, etc. |
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YObykes operate with 36/48 volts system. |
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Conversion of electrical energy into mechanical energy with high efficiency, precise control of speed and smooth drive, without energy loss is achieved by hi-tech application of electrical and electronic engineering. |
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MAJOR COMPONENTS
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ELECTRIC HUB MOTOR
Electric hub motor drives the rear wheel directly. Motors are rated in terms of voltage and output power,
Watts. There are two types of motors. |
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a) BRUSH MOTOR: DC Brush Motor has two basic parts viz.
Permanent Magnet Stator and Wound Rotor |
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b) BRUSHLESS MOTOR: DC Brushless Motor also has two basic parts viz.
Permanent Magnet Rotor and Wound Stator |
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ELECTRONIC MOTOR CONTROLLER
The Electronic Motor Controller, the “brains” of YObykes, provides electric power to the motor based on inputs from the accelerator. Controllers are rated in voltage ( for e.g. 36 volts or 48 volts) and maximum current (amps). A controller with a higher amp rating can deliver more power to the motor. A high quality controller will allow for smooth and precise control over acceleration and avoid overloading of motor.
ELECTRONIC ACCELERATOR
The accelerator of YObyke sends an electronic signal to the electronic controller allowing the rider to precisely and smoothly change and control the speed.
BATTERIES
Battery pack is the ‘fuel tank’ of a YObyke. There are various types of batteries that are used for supplying energy. There are Lead Acid batteries, Nickel Metal Hydrate (Ni-MH) batteries, Lithium batteries, etc. Although Lead Acid batteries are heavier than Ni-MH batteries, they are commonly used for electric vehicles as they are quite economical with good performance. YObykes are provided with maintenance-free Lead Acid batteries. Topping up of distilled water is NOT required. These batteries have special Deep Discharge characteristics to attain optimum performance. Battery packs are rated in volts (V) (typically multiples of 12V; i.e. 36V or 48V) and amp-hours (AH) of energy. An ampere-hour rating of battery determines the storage capacity of charge.
BATTERY CHARGER
The charger replaces the charge in the batteries after the use. Some are built-in, while others are separate
and must be carried along if you want to charge away from home. Similar to Laptop chargers. Chargers
are rated in terms of current carrying capacity (amps). The charger converts
an AC supply to DC to store power in the battery. This charger can be used
with any normal domestic AC plug point (5A or 15A). This makes charging of
battery pack easy and convenient. Moreover, the charger provided along with
the YObykes is designed to avoid overcharging . |
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The life of all the parts including battery, motor, controller, etc., depends on the care
in handling and usage. The user is advised to follow the instructions and develop
right usage practices in order to get optimum performance of YObykes.
SAFETY FEATURES
We have taken utmost care to incorporate all the necessary safety features in the YObykes to ensure
safe and comfortable ride. We are sure that following safety features would further build your confidence
in YObykes.
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No fire hazards. A YObyke is safer than petrol vehicle due to the absence of any inflammable material. |
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It’s safe in all weathers, including rainy season as the electrical parts are well-shielded and protected. |
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Balance and stability of the vehicle is important in turning, speeding, braking, road bumps, etc. This is
achieved by adequate wheel size and appropriate tyre width, ensuring sufficient road clearance. |
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Even distribution of weight, including the rider’s weight, is attained for proper balance. |
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Bright head lights and side indicator lights have been provided for better visibility and safety, respectively. |
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Ergonomically designed controls for acceleration and braking, on the handle bar allows one-hand control. |
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Rider is fully protected against electric shock due to proper wiring layouts and insulations |
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| DESIGN, STYLE & APPEARANCE |
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Innovative design features and use of high strength light-weight alloys help to achieve sturdy, durable
frame while keeping the overall weight light. |
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The YObykes are attractive due to die cast Alloy wheels, Sleek curves and Multicolour painting. They
are diligently styled to match various consumer needs, tastes and lifestyles. |
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Baskets, carry-box and other accessories to hold materials and aid in carrying will be available additionally. |
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STANDARD FITTINGS
YObykes are provided with standard fittings of head lights, side indicators, horns, speedometer (optional
in some models), brake light, etc. A Battery Level Indicator is also included to know the amount of power
left in the battery.
SPECIAL FEATURES
The YObykes have been provided with 3 operational modes: Auto Power or Electric Riding, Power
Assist and Cruise Control. A small switch on the right hand side handle-bar enables you to change from
one mode to another by just pressing a switch. All of these to ensure a comfortable and convenient ride. Let us take you through the working of these Special Features.
Auto Power or Electric Riding
This is the ‘by default’ operational mode when you switch on the power. This is nothing but using the accelerator to drive the vehicle (similar to gearless scooter/moped).
This feature gives you the complete comfort of effortless driving.
Power Assist
Even though YObykes have been provided pedals as a standby provision, an electronic sensor has been fitted along with the pedal which sends the signal to the hub motor based upon the revolutions of pedals. This starts the motor and pedalling is assisted by the motor power. Thus pedalling is not at all tiring and cumbersome; In fact it’s more fun riding YObyke in this mode. Just by pressing a small switch on the right handle bar one can swap from Auto Power mode to this mode. This also helps increase the range to about 10-15% as the motor runs intermittently and does not use the battery continuously as in Auto Power mode.
Cruise Control
This is a unique operational mode provided in YObykes (some models), which is not
available currently in any Indian 2-wheeler. In this mode you can really enjoy the ride, especially on smooth
and low traffic roads. One has to start the vehicle rolling in Auto Power mode and then select the required
speed. Once the speed is attained, the switch on the right hand side handle-bar can be pressed and
Cruise Control mode can be activated. Now the vehicle will keep moving at the same speed without using
the accelerator, till the brakes are applied or the mode is changed by pressing the switch.
SPEED AND SPEED CONTROL
A range of 20-25 kms at an average speed of about 25 km/hr is the general transportation scenario.
YObykes have been designed and developed considering these city commuting conditions. The maximum
speed has been restricted to the level of about 25 km/hr for better speed control in city traffic. Using the
accelerator to increase or decrease the speed makes control simple, intuitive and responsive. Brakes have
been effectively designed to control the speed according to the requirement. As soon as the brakes are
applied, it cuts off the motor power to help control the speed automatically, and also conserves power. |
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