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Electric bicycle parts related to mechanics knowledge

In the electric bicycle frame, tire, pedal, brake, chain and other 25 parts, its basic components are indispensable. Among them, the frame is the skeleton of the bicycle, which bears the weight of the people and goods is the largest. According to the working characteristics of each component, it can be roughly divided into guiding system, driving system and braking system:


* guiding system: it is composed of handlebar, front fork, front axle, front wheel and other parts. Riders can steer the handlebars and keep the body balanced.

* drive (transmission or working) system:it is composed of pedal, central axle, sprocket, crank, chain, flywheel, rear axle, rear wheel and other components. Human foot pedal force is through the foot pedal crank, chain, chain, flywheel, rear axle and other parts of the transmission, so that the bicycle forward.

* braking system: it is composed of brake components. Riders can control the brake at any time to slow down, stop and ensure the safety of driving.

In addition, for safety and beauty, as well as from the practical point of view, also assembled lights, brackets, code table, compass and other accessories.


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Hotebike introduces some electric bicycle parts related to mechanics in detail:

* Frame parts

The frame parts are the basic structure of the e-bike, as well as the skeleton and main body of the e-bike. Other parts are directly or indirectly installed on the frame.

There are many structural forms of frame parts, but the whole can be divided into two categories: men’s frame and women’s frame.

The frame is generally made of ordinary carbon copper pipe through welding and combination. In order to reduce the weight of the tube and improve the strength, the high-grade bicycles are made of low alloy steel tube. In order to reduce the resistance of fast driving, some bikes also use streamlined steel tubes.

Due to the electric bicycle is a driving force on the body’s own and cycling skills while driving, the frame is under impact load produced by electric bicycle on the road and comfortable and safely carry important structure of the human body, chassis components manufacturing, precision will directly affect the safety of riding, smooth, and fast. Generally speaking, the spokes are of equal diameter. In order to reduce the gravity, the spokes are also made into reduced diameter spokes with large ends and small middle, and the spokes are made into flat streamlines in order to reduce the air resistance.


* The chain

Chain also known as car chain, roller chain, installed in the chain and flywheel. Its function is to transfer the pedal force from the crank, sprocket wheel to the flywheel and rear wheel, driving the bicycle forward.

Sprocket wheel: made of high strength steel to ensure that it reaches the required tension.


* Tires

There are soft side and hard side tires. The soft side tire has a wide section, can completely cover the inner tube, has a relatively large landing area, and can be suitable for a variety of road driving. The hard side tire is light in weight and small in touchdown area, which is suitable for driving on flat road.

The pattern on the tire is to increase the friction with the ground. Mountain bike tire width is particularly wide, the pattern is deep is also suitable for off-road mountain use.



* pedal components

The pedal component is assembled on the left and right cranks of the central shaft component, which is a device to convert the flat power into the rotary power. When riding a bicycle, the pedal force is first transmitted to the pedal component, and then the pedal shaft rotates the crank, the central shaft and the chain flywheel to make the rear wheel rotate, thus making the bicycle move forward. Therefore, whether the structure and specification of pedal components are appropriate will directly affect whether the position of the rider’s foot is appropriate and whether the bicycle drive can be carried out smoothly.

Foot: it can be divided into integral foot and combination foot. No matter the foot of what design must have foot face, must safe and reliable, have certain prevent slippery performance, can choose rubber, plastic or metal material to make. The foot must be flexible.


* front fork parts

The front fork part is located in the front part of the bicycle structure. Its upper end is connected with the handlebar part, the frame part is matched with the front tube, and the lower end is matched with the front axle part to form the guidance system of the bicycle.

Turning the handlebar and fork can make the front wheel change direction and play the guiding role of the bicycle. In addition, it can also play a role in controlling the ride of the bicycle.

The forked part is cantilever beam, so it must have enough strength and so on.



* the flywheel

The flywheel is fixed on the right end of the rear axle with internal screw thread, keeping the same plane with the sprocket, and connected with the sprocket through the chain, forming the driving system of the bicycle. In terms of structure, it can be divided into two categories: single-stage flywheel and multi-stage flywheel.

Single-stage flywheel is also called single-chain flywheel, mainly composed of jacket, flat block and core, jins, jins spring, gasket, wire block several steel ball and other parts.

Its single-stage flywheel working principle: when the forward step pedal, the chain drive flywheel forward rotation, then flywheel internal teeth and jins contain, flywheel power through the jins to the core, core drive rear axle and rear wheel rotation, the bicycle forward.

When the pedal is stopped, both the chain and the cover do not rotate, but the rear wheel still drives the core and the jack to rotate forward under the action of inertia, then the flywheel inner tooth produces relative sliding, thus compressing the core into the notch of the core, and the jack also compresses the jack spring. When the top of the jack tooth slides to the top of the inner tooth of the flywheel, the jack spring is most compressed, and then slides forward a little bit, the jack spring is bounced to the root of the tooth, making a “click” sound. The core rotates faster, and the jack also slides on the inner teeth of each flywheel, making a “click” sound. When the reverse pedal pedal, the reverse rotation of the coat, will accelerate the lifting of the sliding, so that the “click” sound more rapid. Multistage flywheel is an important component in bicycle transmission.


The multi-stage flywheel is based on the single-stage flywheel, and several flywheel pieces are added to combine with the sprocket on the central shaft to form various transmission ratios, thus changing the speed of the bicycle.



【Upgraded Design】1) Removable hidden 36V 10AH Lithium-Ion battery; 2) 36V 350W high speed motor; 3) Premium 21 speed gear derailleur; 4) Reliable 160 disc brake; 5) 3W LED headlight for night riding with a USB port for mobile charging; 6) Multifunctional LCD display panel; 7) Range per charge: 35-60 miles; 8) 27.5 inch light & strong aluminum alloy frame; 9) easy and fast installation following the guide

【Hidden Battery】36V 10AH removable Lithium-Ion battery, can reach an extra long range up to 3


5-50 miles per charge, and a full charge takes just 4 hours. The compact battery is hidden in the oblique bar, and it’s removable, invisible and lockable. 350W high speed brushless motor make the ebike deliver the best in class acceleration. Lightweight 27’’ aluminum alloy frame and sturdy suspension fork ensure smooth rides on different road surfaces. NOTE: bike and battery will be shipped separately

【Brake & Gear System】Front and rear mechanical 160 disc brakes provides more reliableall-weather stopping power, which keep you safe from any emergency with a brake distance within 3 meters. 21 Speed gear increases hill-climbing power, further range variation, and greater terrain adaptability. According different road condition, such as flat, uphill, downhill, the e bike can be adjusted to different gear speeds. Reduce the strength and pressure of your legs effectively

【LCD Display Panel & LED headlight】Equipped with a front LED headlamp for safer night riding, which is controlled by the intelligent and exclusive LCD display panel. The panel shows lots of data like Distance, Mileage, Temperature, Voltage, etc. You can also change between the 5 levels of pedal assist mode with the panel and have a more customized riding experience. Comes with a 5V 1A USB mobile phone charging port on the headlight for a convenient phone charging on the ride.

【3 Working Modes】E-bike & PAS (pedal assist mode) & normal bike. With the 5-speed shift button, you can change the electric assist power according to your needs. You can also choose the E-bike to enjoy a long time travel.

【One Year Warranty】One-year warranty for the motor, battery and controller, just buy with confidence! The ebike has finished most assembling before shipment. The electric system is assembled, you just need assemble front fork, front wheel, handlebar, saddle and pedal.



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  1. I need a new right side crank for the A6AH26. How can i order that?

    • Hello there,
      Thank you for your interest in HOTEBIKE.
      Fanny has contacted you by email.
      Looking forward to your reply.
      sincere regards,
      Fanny from HOTEBIKE.

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