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Do you know what's inside your Helmet?

18th December 2020
"The numerous pieces that comprise a helmet that act to protect riders are described below."

You are aware that it is really important to wear a helmet when riding a two-wheeler. But do you know why this aspect of the safety gear is so important? Helmets are meant to cover any vulnerable section of the head that if injured, may either lead to deaths or long-term medical problems. The numerous pieces that comprise a helmet that act to protect riders are described below.

The Shell

helmet-shell

The outermost part of a helmet is the shell; the substance that takes all the energy on impact. It is a big factor in the weight, form, and price of your helmet. It is possible to produce it from different materials:

  1. Fiberglass or fiber composite
  2. Polycarbonate 
  3. Fiber carbon or Kevlar

One of the most common materials used is fiberglass, as it is hard and long-lasting. A durable and lightweight composite is carbon fiber or Kevlar. The shell normally has a heat-reflecting paint layer to ensure that it is not only safe but also comfortable.
 

EPS Liner 

helmet-eps-liner

A dense high-density foam that forms the second layer of the helmet is expanded polystyrene or EPS. The inside of the shell is equipped with this component. It is an equally necessary feature of the helmet and is designed to withstand shocks of all sorts, from mild to dangerous. This cushions your head and provides greater protection from impact.

 

Comfort Liner 

comfort-liner

Here's where you get fit. The key job of the comfort lining is to secure the helmet on your head in place and prevent it from spinning in a collision or sliding about. It also affects the noise level within the helmet and serves as a shield, absorbing the sweat and skin oils that strike and weaken the EPS between you and the liner. Nice helmets come with liners for comfort that are reusable and washable. A lot of riders judge helmets by how they fit around the forehead, but fitting snugly is also important for the rest of the head.

 

Pads Cheek

helmet-pads-cheek

Usually, they are called a feature of the comfort liner, since they are made of the same substance as the liner. In the event of a front or side collision, they prevent the helmet from moving. They contribute to the comfort quotient of helmets as well.
 

The Vents

helmet-vents

Vents in a helmet enable airflow as it is worn by the rider. Usually, they are positioned on the chin strip, above the brow, and at the back of the helmet. Two types of vents are typically used in most helmets:

  1. Forward-facing vents- Aid to pull in the breeze
  2. Rear-facing or exhaust vents- Force out hot air
  3. In cold weather, certain helmets have flexible vents or those that you cover in order to control the airflow.

Visor

helmet-visor

The visor is a movable mask (slides up and down) that shields the front of your face from dust and direct sunshine, including the eyes. Some helmets often have tinted visors to shield the eyes of the rider from ultraviolet radiation, whereas some of the newer versions incorporate anti-fogging protection that allows riders to travel without compromising their vision in rain or fog. Any of the highest performing visors are made of material made of polycarbonate, which does not crack or crumble on contact.

 

System for retention

helmet-retention-system

Or a chinstrap, as non-engineers call it. It is riveted to the shell of the helmet and must withstand a series of checks testing how resistant it is to being taken out. There's no safety distinction between double D-ring and ratchets or buckles—both styles pass the retention checks or they don't get sold here—but there are no springs or hinges to crack in a D-ring, which is why many riders and almost all racers prefer them. The positioning of the rivets should be so that with the strap buckled, you do not tip the helmet forward off your back.

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Compiled by : Upasana Poudel Upasana Poudel

What is maximum power and peak torque?

23rd December 2019
"There is a piston that gets power from the fuel that is burned to run the motorcycle. The piston is connected to a rod and the rod is connected to a crankshaft."

Being a review team, we often use technical terms like maximum power and peak torque. But what is it really? Why is it one of the most important factors of any automobile to determine the character, feel and ride? We will try explaining it to you in the simplest form.

There is a piston that gets power from the fuel that is burned to run the motorcycle. The piston is connected to a rod and the rod is connected to a crankshaft.

Motor running GIF

Picture a bicycle. The more force you apply in the pedal, the faster the bicycle runs. Similarly, more force from the piston moves the crankshaft faster. Confused?

cycle pedaling

The distance between the pedal to the rotation point is comparable to the distance between the crank and the middle point of the crankshaft, and in the same way, as in the bicycle example, the distance "counts" for 100% when the point of the crank that is connected to the rod has an angle of 90 degrees with the direction of the piston, and for 0% when that point is in the highest or the lowest position. Still, confused?

In simple terms, the more you rev the throttle, the pistons move rapidly which rotates the crankshaft to reach a higher speed.

Bike Engine

The power we feel is the torque. It is expressed in Newton Meter (Nm). The power and revolution per minute provided by that power is the number we state during the engine specification. (Nm@rpm)

The torque provided by the piston varies from rpm to rpm. The torque at any rpm is the average power the piston delivers at the revolution stroke. The amount of power tells how fast the engine can rotate the wheels. Simply putting, torque is the pulling power of a vehicle.

bike engine

Difference between power and torque

Power is the expression of how fast a motorcycle can run when accelerated. It is delivered by the combination of torque and the revolution per minute. When buying an automobile, only looking at the power is not enough. The power collapse after it reaches its limits, and it is the torque that defines the real character and feel of the bike. The advantage of high torque is that you get power from low rpms too.

Or else,  when you ride a motorbike, you will have to change gears a lot, to keep the engine in the high rpm's all the time: in the narrow area where there is power. You will also have to use the clutch when accelerating from a standstill: the engine needs a high rpm to be able to do that.

Power is required in the city streets to cross the traffic in a jiffy and the torque is required when you are cruising down the highway with power in low rpms.

motorbike

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Compiled by : Debashish S Neupane Debashish S Neupane

TIPS TO HANDLE COLD STARTING OF BIKE | REVIEWS NEPAL

30th September 2020
"Its that time of the year!"

It is that time of the year when our riders are waiting for the monsoon to end. We can also say that it is riding the season of the year. For many, the serene pleasure of traveling in the cold is a delight but, to be honest, this has its own set of challenges that comes with it. Today, managing cold problems is something that every rider handles according to how relaxed they are. The mechanical difficulties that arise with the bike, on the other hand, are normal for all. So here's our detailed list to tackle the cold engine's threat, a quick start.

1. Try to kickstart

KICK-START

The unfortunate thing about this is that most new bikes are introduced without the possibility of a kick start. The part where the rider can not get his engine started because the battery juices are not up for it, as much as I admire the idea of reducing the rider's commitment to getting the bike running. Draining on the battery will get a bike started with electricity, particularly in cases of repeated failed attempts. A kick start comes in handy here. It is advised that the bike should be kick-started for optimal output at each interval of starting a bike, where the stopping time is over 6 hours. This assures battery and engine endurance as well. Too bad for bikes without a kick-starter, but this is your go-to choice for all the others.

2.Choke Supplying

CHOKE

For bikes with electronic fuel injection, this is not applicable. Make use of the small lever elsewhere on the bike for anyone else. Refer to the handbook you got with the bike at the time of delivery for the precise position depending on the model. Only pull the level to 'Up' and start the bike if you do not know how to use a choke. The bike will start or start quickly with normal revs and then change to high revs at idle. It is also advised not to hold the choke on while the bike is off and stationary, because fuel can flood the engine block.

3. Flow the fuel in the engine

Vehicles require liquids to work as a human body-their the most critical resource being petrol. It's not enough to get the bike running, particularly when it's cold, although most bikes have some fuel left over in the carburetor. For this, what you need to do is turn the gas knob from "Off" to "On" or "RES," which, if you are running low on gasoline, stands for reserve. Now, let the gasoline, which should not take longer than a few seconds, flow into the engine.

4. Moving the Motorcycle

MOVING

Both the liquids appear to pool at the bottom of the crankcase, making the top portion of the gears dry if a motorcycle has been sitting idle for a long time. It should be enough to drive the bike through your parking lot or your garage. This effectively helps the gears to be lubricated with oils and eliminates the likelihood that the bike will operate with the least amount of oil.

5. Ensure the motorcycle is in operating condition

You need to have lots of petrol and a battery that is well-charged. Keeping the motorcycle properly serviced, especially in damp or cold conditions, is crucial. Fit new spark plugs, or clean the old ones, if not worn, and void. Check the timing of the ignition and change it if necessary; replace the ignition points if installed. A carburetor and clean service is also a nice idea. If they look rusty, worn, or frayed, replace the spark plug leads.  Check for the guide in your motorcycle's handbook using only manufacturer-recommended spark plugs and plug leads.

Also Read:

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Compiled by : Upasana Poudel Upasana Poudel

Tips for long distance bike ride

28th October 2020
"Worth every mile!"

If you practically want to see the planet on a motorcycle, you can. Long-distance motorcycle trips are a genuinely unique opportunity that everybody should try at least once throughout their lifetime, whether it's riding across continents or cruising across the backcountry of your state.

That said, a motorcycle trip involves comprehensive pre-trip preparation and analysis, and when preparing the trip, there are several variables to bear in mind. All you need to know before you hop on a bike and take a ride are these 5 tips.  

Accessories

bike-accessories

It is crucial that you equip yourself with the right accessories so that during your journey you remain healthy. Although wearing the jacket and gloves of a biker will help you battle the heat and prevent sweating, so make sure you wear a helmet of decent quality as this can be the difference between life and death.

It's easy, inexpensive to ride a motorcycle and it gives you this amazing sense of independence. A motto that you should always obey when riding a motorcycle is "Safety always comes first." Indeed, safety is the highest priority for motorcycles. Luckily enough, there is plenty of security equipment at your side.

 

Get your bike fit for the long ride.

fixing-bike

Preparing your bike includes carefully cleaning it and servicing it as necessary. As soon as it comes to light, you ought to fix any problems you find, such as loose brakes, clutch, or gear. Ensure that the bike has dual sport tires so that all smooth surfaces and unpaved roads are handled with no problem. And that you have properly serviced the bike from a reputable garage to ensure that before you reach the track, it's in top shape.

But during the trip, you can resolve small problems yourself, don't try to tackle any major problems on your own. Still follow competent assistance.

 

Select the Best Bike

right-bike

One of the most critical elements of traveling by motorcycle is to find the right bike. And your bike needs to be in line with the specifications of your ride.

Your checklist for finding the right bike should concentrate on factors such as mileage, low maintenance and, most notably, a convenient seating position so that after a long ride you do not strain your neck and/or back.

Create a checklist of the specifications and pick a bike that satisfies them. Before heading off, do extensive research to select the best sort of bike for your expedition.

 

Project Your Course

planning-ride

  • Know and map to your final destination using GPS or the old-fashion paper map. Decide how long it's going to take to get there, whether that's a few hours or days from now.
  • Before riding, be mindful of the weather so you can pack accordingly. Are you going to ride at night, which might require cooler gear for the weather? Or are you riding an errant rainstorm in the spring? Perhaps it is a long day of sunshine in summer? In a matter of minutes, topography over mountain passes will change from hot to cold, so be prepared for changing temperatures.
  • If you intend to stay overnight on your journey, prepare accordingly, and get your rooms reserved before you leave. You don't want to ride into a town and know every hotel in town has booked a solid big championship game.
  • You should know how long you can travel on a full tank of fuel, and you can schedule your fuel stops ahead of time with that knowledge.

 

Make sure to get enough rest

rest-in-bike

Riding a bike for extended periods of time has the ability to cause serious back pain and a sprained neck. So make sure you make pit stops at intermittent periods of time between your journey.

For every hour of riding, taking a pit stop for 10 minutes is advised. Make sure you stretch and re-hydrate at that time. In hot weather, long journeys will cause your body to become dehydrated, so you need to make sure you drink water and rest properly throughout your journey.


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Compiled by : Upasana Poudel Upasana Poudel