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  • Category: Two-Wheelers

    Meaning of each technical specification in a two wheeler

    Don't understand the terminology of various tech specs of a two-wheeler? Get a free learning tutorial from our experts on the meanings of the various specifications used for a two-wheeler.

    There are different types of specifications in two wheelers and so I want to know what is the actual base that we consider for each specifications. So I want to know what is the meaning of cc, horsepower, bhp, dry weight, displacement, transmission/ primary drive, transmission/final drive, fuel system, exhaust, compression ratio, suspension and peak torque.
  • Answers

    2 Answers found.
  • These are the basic terms which you will see whenever checking about any engine of bike, car, truck, etc. As you asked more about these terms, they will help you in estimating vehicles power, handling, etc.

    CC - CC refers to engine displacements. It is the volume displaced by all the pistons in one revolution. In Engineering terms CC is said to be Centi-meter cube or Cubic Inch. Engine Displacement (CC) can be calculated through strokes and bores of any engine. CC don't have any connection to engine's power (mostly), you will see many Harley Davidson's bikes with 1600 CC engines but with horse-power of only 55 horse power whereas a KTM RC 390 is of 383 CC and outputs 44 horse power which is much more in the ratio of Harley Davidson.

    Horse Power & bhp - No spelling mistake bhp is written like that only. Horse Power and bhp are same, bhp is normally Horse Power's unit. They both refers to power of any engine. Horse power is calculated on basis of James Watt formula by checking how much weight engine can lift in certain period of time.

    Dry Weight - It is the weight of your vehicle in stock condition. Fully stock condition - No Accessories, No Petrol/Diesel, etc. To calculate everything you will need to remove everything which you think is fitted by you.

    Displacement - As I fully elaborated it, Displacement is same as CC.

    Transmission - Normally people says it as Gear. It will protect your engine from straining. There are two types of transmission - Manual and Automatic. In Automatic transmission you just need to shift your gear knob to D and you are good to go. There is no clutch just brake and acceleration pedal. Another part is manual transmission in which you will have to use your gear knob to change your gears, there can be 5 gears, 6 gears or even 7 gears on the basis of engine displacement.

    Fuel System - I don't think I want to say more about it. Fuel system is based on the fuel type supported by your vehicles engine. There are normally 4 types of Fuel supported by vehicles- Petrol, Diesel, CNG and LPG.

    Exhaust - Whenever engine works it generates some toxic gases which can harm your car's engine. So engineers made a pipeline right through Engine to the end of your vehicle which normally emits gases. It is known as Exhaust System.

    Suspension - Every vehicles comes fitted with shocker near every wheel so that it can help you to go through every broken road. Shockers normally absorb jerks by moving up and down which will save you from almost feeling those heavy jerks.

    Torque - It is the power to the tires which give you sudden pickup. It is normally calculated by RPM meter present in almost every car.

    So I hope I cleared all the terms you asked to me if there are still any issues then you can just ask question about it again.

    I am currently pursuing High School and planning to pursue career in Computer. Currently, I work on one of my blog - JTech Articles.

  • These are more of a regular terms used in connection with the automotive technology. Definitions and meanings of a few such words are -
    Horsepower is the measurement of engine power. The term comes into the use because of the ancient usage of horses to drive the cart. In those days, capacity was measured in terms of the strength of the horses.

    The Brake Horse Power is symbolically written as bhp. This is the measurement of the actual power of the vehicle engine. It is measured at the crankshaft.

    Displacement is a measure of the air displaced by the fuel. The displacement takes into account the air displaced by all the pistons. It is normally measured in cc - cubic centimeter. In other words, it denotes total air and fuel that can be held by the cylinder.

    Dry weight
    Dry weight of a vehicle is the total weight of the vehicle under standard conditions. Practically it means the weight of a vehicle without any fuel, oil or coolant.

    Tansmission refers to the component of the vehicle that moves it forward or backward. It can be of two types - manual or automatic. Manual transmission involves the use of gears and clutch. Automatic transmission makes use of hydraulic system.
    The primary drive is that part of the system that extends from engine crankshaft to the transmission. The final drive is the end of the transmission system. It is practically the collection of gears, sprockets and chains that transfer the output to the rear wheel via the axle.

    Fuel System
    The part of the vehicle that stores, cleans and delivers the fuel to engine is termed as fuel system. It ensures the supply of the fuel to the engine in proper quality according to your nature of driving and conditions thereof. It consists of fuel tank, filters, fuel lines, injection system and filters.

    Exhaust system
    Exhaust system is essentially that part which expels the by products of combustion taking place in the engine. Exhaust ports, exhaust lines, mufflers ( also called silencer in layman's words), resonators and converters if any constitute the exhaust system.

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