Where Is The Frame Number On The Bike

Universal table “Bike size

It is easy to find the size of your bike using this chart. But it is suitable exclusively for classic frames. If you choose a mountain bike or BMX bike, you will have to focus on other numbers.

Frame size in inchesFrame size in centimetersConditional letter designationCyclist height in centimeters
thirteen33XS130-145
fourteen35.6XS135-155
fifteen38.1S145-160
sixteen40.6S150-165
1743.2M155-170
eighteen45.7M165-175
1948.3L172-180
2050.8L178-185
2153.3XL180-190
2255.9XL185-195
2358.4XXL190-200
2461XXL195-210

Choosing a bike for a child

There are some Fundamental differences here. Firstly, it is not necessary to accustom the child to an adult bicycle or buy it for growth. This is fraught with injury. The child will not be able to freely reach the pedals. Forced to stretch continuously, it can fall or slide off the seat and hit the frame. Also in Him, there is not enough strength to press the brakes, because their handles are large. And they are pressed too tight.

Secondly, it is better to select children’s bicycles not only by the size of the frame, but also by the diameter of the wheel. After all, the distance to the frame is adjusted by the height of the saddle and handlebars. The table “Bicycle size for a child” will help you to navigate this.

Wheel diameter (inches)

Bicycle size for women

In this case, the process is NOT different from the choice of a bike by a man. Everything determines the height of the frame. It can be underestimated, but the need for this will arise only if the lady is going to skate in a skirt. Use the “Bike size” table above as a guide.

Due to anatomical features, women should prefer models with a wider saddle and thinner handlebars.

The inner side of the legs and why it really matters

Yes, the main parameter in the choice is your height. However, in order to accurately select the desired frame size, you also need to make the correct measurements on the inside of the legs. To do this yourself, you need no shoes only in your underwear, the floor with your back to the wall. The knees must NOT bend and the pelvis and heels must touch the wall. In order to take a measurement, you can use a building level or a tape measure. The easiest way is to make a mark on the wall surface and measure the height strictly perpendicular to the floor. This will be the height of the inside of your legs. If there is such a possibility, then measurements are best performed initially in inches. This will greatly simplify the choice and protect you from having to recalculate units of measurement at the time of purchase.

Once you know the inside length, calculating the required frame size becomes much easier and more accurate. But please note that you will have to make a miscalculation yourself, and for each category of bicycles the formula is partially different.

  • Bicycles of the double suspension category. To calculate your internal leg length, you need to multiply by 0.225. That is, if the legs are 80 centimeters long, calculate as follows: 80 x 0.225 = 18 inches. In this case, you can choose a frame size of 17 inches for sporty riding, and 19 for touring.
  • When choosing MTB bicycles and hardtails, the coefficient by which the length of the legs is multiplied is 0.226.
  • For road and cyclocross bikes the coefficient is 0.635.
  • For cross bikes, the coefficient is 0.259.

Several recommendations

  • For high-speed riding, bicycles with a frame size larger are used.
  • You can buy 1 bike for two only if the difference in the height of the riders does NOT exceed 10 cm.
  • Smaller bikes (about 2 sizes) are suitable for performing tricks.
  • It is more convenient for the elderly to ride the Iron Horse with a small frame. Ditto for fat cyclists.
  • When buying a bike, you need to think in advance where it will be used.
  • It is optimal to buy a bike with a size or slightly smaller.

Choosing the size of BMX bikes

Stunt bikes are measured differently than everyone else. In them, the size is called the length of the upper tube of the frame. It is measured by the English standard of length. inches. For some, a long frame is more convenient, others like a short one. In this case, there are some generally accepted rules and strict proportions, it all depends on personal preference. Therefore, the relationship between bike frame size and height is quite different here. The table reflects this dependence.

Cyclist height in centimetersFrame size in inches
140-15019.5
150-17020.0
170-18020.5
180-19021.0

Additional tips for choosing a frame

An important factor in choosing a frame is also your personal riding style. If you are a fan of extreme riding in difficult terrain, then it is recommended to choose a frame that is one size smaller than your norm. This way you will feel more confident in difficult terrain and under heavy loads. And the bike in this case will be much more maneuverable, which is important. But if you prefer a calm and measured ride on a regular road, then it is quite possible to accurately navigate the table.

Choosing the right stem is just as important. There are really a lot of them, so we strongly recommend spending some time on the choice, so that later you DO NOT feel discomfort while driving.

READ  Bike Stealth Navigator How To Switch Speeds

Always consider your own physique. And it’s NOT so much about the load on the frame as about ride comfort. If you are thin or have a standard physique, then you can easily choose the large VELOBIKE size. For overweight people, it is recommended to take one size smaller. This bike is easier to ride, get on and off.

Remember that you can adjust the saddle position and stem at any time (but not on all bikes). In many mountain bike models, the stem cannot be adjusted, but the saddle can be raised and lowered quite significantly. If you see that the handlebars are NOT adjustable, do not rush to refuse such a bike. This is done in accordance with safety standards for bikes designed for EXTREME riding.

How to determine if the frame size suits you

If you managed to arrange a test drive of the bike, then pay attention to the following points:

    • When you are standing on the ground, the distance between the groin and the upper tube should be at least 8 cm.Moreover, the more extreme the riding style, the greater this distance should be.

 

    It is also worth noting that the female frame is generally much lower than the male frame. This is due to the historical development of the bicycle and the way girls are put on the bicycle (men, as a rule, throw their leg over the saddle, while girls. over the frame). Therefore, for girls, this rule is not as relevant as for men;

The landing should be comfortable for you and correspond to the riding style (for a calm riding style. a higher landing, for a predominantly high-speed ride. low)

You must freely reach with your bent arms to the steering wheel and at the same time is NOT in a half-position (an uncomfortable position in which you want to either lean back or lean forward more. you feel it)

  • DO NOT listen to anyone but yourself. If the seller tells you that this frame suits you, and you feel discomfort for some unknown reason (it seems that the size is correct, the length of the frame is also suitable), then you should not take the bike with the thought “okay, get used to it, especially since everything seems to be rules “.

Saddle width

For some reason, this parameter is often bypassed. And completely in vain. With the wrong saddle, all the pleasure will come down to comments because of the constant discomfort. After walking, scuffs will form, and with frequent driving, constant pain in the pelvic area will disturb. When landing on the correct saddle, a person will lean on it with the ischial tubercles (the most protruding parts of the buttocks). You can clearly see their location on footprints in the sand. You can even specially measure the distance between them in order to choose the right saddle. You should NOT be guided by the principle “the wider the better”. Otherwise, it will be inconvenient to work with your feet.

That’s all there is to know about bike selection and bike sizes. This knowledge will help you navigate the variety of bikes.

How to choose a bike for your height

To ensure a comfortable fit for people of different ages, bicycles are produced in several size categories, which are determined by the size of the frame. Typically, it is indicated in inches on the surface of the seat tube. It is often possible to observe the characteristics of the frame dimensions, indicated in centimeters or indicated by the known letter parameters in Latin S, M, and L. In most cases, such marking is the most convenient and understandable for a person inexperienced in cycling.

In cycling there is such a thing as frame geometry. It is she who sets the final proportions of all its elements and influences the choice of technique for a certain cyclist’s height. The basic parameter, which sets the frame length, is the distance from the carriage axis to the end of the seat tube.

Features of frame types

What should you pay attention to when choosing a bike? Consider the recommendations for the type of frame.

  • Versatile cross-country. The straight and clear frame makes this type a reference. When choosing, we use a universal rule and carefully look at the stem and the configuration of the saddle. They can be “unexpected” in size and seriously change the configuration.
  • Road bike frames Must fit perfectly, as every inch of leverage on a moving body directly affects power and speed. Important Pay attention Not only to the configuration and length, but also to the handlebars, which take on a very large load corresponding to the weight of the athlete.
  • For downhill and mountain bike frames, it is especially important to leave safety distances both under the saddle and at the level of the handlebars. it does not make sense to select a configuration that will interfere with a sudden fall or full activation of the fork.
  • Cruisers. The main thing is convenience. Pay attention to the position of the saddle and arms. There is no point in looking at the nominal dimensions, since even within the model range of one manufacturer they may differ.

Scientific approach

A more accurate and reasonable calculation will allow you to get the maximum comfort from riding the selected bike.

It is not only the size of the frame that matters, but also the effective length or the ETT value.

To calculate ETT, the length of a line parallel to the road surface is taken. This line starts at the center of the head tube (front end of the frame) and ends at the point where the seat tube extends. The beginning and end of this line coincide with the center of the section of both pipes. The following ranges of values ​​allow choosing the Most Comfortable Bike according to the rule using ETT values.

ETT value

This approach is used in conjunction with the previous one. That is, together with the size, it is recommended to check the value of the effective bicycle length. Choosing a model that is too short will not allow you to keep your back straight while riding. Too “long” bike also hi to sprain joints and back muscles.

READ  DIY Bicycle Chain Tensioner

For non-sporting (e.g. urban, road models) 5% is subtracted from the above ETT values.

Size, pipe length, connection angles

Regardless of whether you choose a bike only for short-term walks or for regular and active riding, it is absolutely important to choose the right size. It affects the dimensions of the entire frame as a whole, the parameters of all frame pipes.

First, let’s look at how to choose the frame size for the most common bike models: mountain bike, off-road VELOBIKE, hybrids. It is they who today form the basis of the market and it is in this segment that the buyer has the most choice.

Bicycle frame manufacturers themselves are interested in reaching as much of the market as possible, so each frame model comes in several sizes. For some bicycles, there may even be ten or more. In this case, the dimensions of the frame are always indicated in the marking. Designations can be in centimeters, inches, and sometimes even letter designations are found. In professional manufacturers, measurements are taken according to the size of each tube, not just the seatpost. In addition, even the connection angles of all pipes are taken into account.

We suggest orienting yourself according to the table below. It is considered one of the most versatile frame sizes.

Note that this table is most relevant when buying mountain bikes. However, in the absence of alternative sources of information, it can be used when choosing other types.

If you choose a city bike and you have a small height (up to 170 cm), then an important selection criterion for you will be the presence of a rear shock absorber. Namely the seatpost. The fact is that in most models it does not allow the saddle to be fully lowered. Because of this, with low growth, it is better to choose a frame not 18, but 16 inches in size.

Important: if your height does not fit clearly under the table and into a specific category, experts recommend choosing a larger size. But if this is a model with a shock absorber, then you need to act the other way around.

Road Road Bikes

In this case, it is also recommended to take a reference point to the table:

Do not forget that there is a rear shock absorber in these models, so if your height does not meet the required criterion in the table, focus on the larger one. In any case, you will have the opportunity to adjust the level of the saddle as it is convenient.

Additional tips for choosing a frame

An important factor in choosing a frame is also your personal riding style. If you are a fan of extreme riding in difficult terrain, then it is recommended to choose a frame that is one size smaller than your norm. This way you will feel more confident in difficult terrain and under heavy loads. And the bike in this case will be much more maneuverable, which is important. But if you prefer a calm and measured ride on a regular road, then it is quite possible to accurately navigate the table.

Choosing the right stem is just as important. There are really a lot of them, so we strongly recommend spending some time on the choice, so that later you DO NOT feel discomfort while driving.

Always consider your own physique. And it’s NOT so much about the load on the frame as about ride comfort. If you are thin or have a standard physique, then you can easily choose the large VELOBIKE size. For overweight people, it is recommended to take one size smaller. This bike is easier to ride, get on and off.

Remember that you can adjust the saddle position and stem at any time (but not on all bikes). In many mountain bike models, the stem cannot be adjusted, but the saddle can be raised and lowered quite significantly. If you see that the handlebars are NOT adjustable, do not rush to refuse such a bike. This is done in accordance with safety standards for bikes designed for EXTREME riding.

Another calculation formula for men

Using a tape measure and the same board or book, measure the distance from the floor to the crotch, and not to the crown of the head. Multiply the resulting value by 0.57. for mountain bikes (including full suspension). For track bikes, a factor of 0.63 is used. When choosing a road model, the multiplier is 0.66. In a touring bike, the multiplier for calculating the frame size is 0.61, if a cushion seatpost is used, another 5 cm is subtracted from the obtained value.To convert the result to inches, divide the resulting value by 2.54.

For a child or teenager

Choosing a bike for a teenager in terms of frame size is not much different from similar actions for men and women. But with emergency braking, the child must reach with his feet to the road on which he is driving. if, for example, the brakes have failed.

Usage mode

The main thing in choosing a frame is the type of ride. How the bike can be used?

  • Walking bike. Size isn’t really that important because the loads will be sparse and not very Severe. You can leave extra space for convenience: lower frame, higher handlebars to easily get off the bike.
  • Racing and road riding are the exact opposite of walking. It is desirable to have a saddle wheel as low as possible in order to use additional force when pedaling. The dimensions of the frames in this case must exactly match the height of the cyclist, universal changes will not be enough.
  • Tourist or urban cross-country is a universal style, general recommendations are more or less suitable for it.

How to protect your bike from theft?

A few simple steps to follow will significantly reduce the chance of your bike being stolen. In order to 100% protect yourself from bicycle theft, it is better not to have one!

READ  26 Size Of Bicycle Wheels For Which

When buying a bicycle, you must issue a passport, where the serial number of the frame is recorded, see that it is correctly entered there and that it is it, and not the batch number, in general. Keep all documents on the bike. Immediately take photos of the serial number of the frame, fork and appearance of the bike and add them to your phone or take your phone. As the appearance changes, take photos as well. they can help with the search.

Where is the serial number of the bike?

By the way, we recommend:

The serial number is usually found in the following places:

  • Below the frame under the carriage. The place is rather inconvenient, but there it is very often applied by manufacturers. If the police stop you for some reason and asks to show the bicycle number, then you have to turn it over and, God forbid, the pipe is dirty, and also clean the dirt to read the letters and numbers. Police check the bike number.
  • On the front of the steering tube. Everything here is much simpler and more convenient. you can quickly and conveniently view it.

The first and second options are the most common, but the following are also found:

  • On the right back feather or cock, if it is not removable.
  • On the crossbar connecting the tops of the rear stays and to which the rear wing and trunk (if equipped) are attached.
  • On the bar connecting the lower parts of the rear stays and to which the rear wing is attached (if any).
  • At the bottom or top of the seat tube. This is the tube on the bike frame, into which the seatpost is inserted and the saddle is attached to it.
  • On some there was the number of the lower part of the rear triangle next to the carriage.

Why check the serial number of the bike?

There are sites with a bicycle file. They can check the bike by its serial number. The main purpose of such services is to prevent the purchase of stolen bicycles by hand. Now everyone can check the bike by number before buying and, possibly, inform the owner about the resale of his bike.

Here is what a police officer writes about stealing bicycles and serial numbers on one of the forums:

“As a police officer, I recommend it. Immediately. After discovering the missing bike, contact the nearest police station! But first you need to collect your thoughts and think. Which of the neighborly so-called “boys” drew attention to you, or rather to your iron horse. Remember the storage you saw nearby was a negative element in the form of homeless people and other trash. And all this should be explained in detail to the person receiving the application. Better to put it all in a statement.

If you have NOT done any “birthmarks” on the frame (in the form of serifs, etc.) or special features of the bike. There is a Number on the frame, it is better to write it down and keep it at home. To theft.It is located below, if you turn the led.

But do not expect that the entire police will rush to catch the villains who have stolen your treasure! You have to work hard yourself, it happens, look, ask around, (you can flip through the newspapers and advertisements for the sale of your led.)

Vel can be an order of magnitude more expensive

Domestic car, but at the same time it is very difficult to somehow document it (for example, in court). Keep your receipts. it may also help when participating in car accidents.

This is if the led is bought. And if self-collection. then xs.

If your lead has been stolen, be sure to promptly write it off on the forum (with a photo!) Or by phone ask someone you know to do it for you. Perhaps he will be lucky and on the same day he will be noticed in the city. But if you notice a stranger, do not put it off. immediately call (the owner, maybe through third friends).

Where Is The Frame Number On The Bike

Don’t forget to take a photo of your bike! This recommendation does not apply to technomaniacs, in which there are pictures of everything led on spare parts in all details and on the scales. However, be sure to take a fresh shot of good quality, both of the entire led (well, another shot led along with you), and the main SEPARATE nodes (the same number of the rear cock / frame carriage, scratches, other unique signs). ”

Your bike was stolen? Enter the data in the stolen bike into the database and maximize the dissemination of information among friends and acquaintances

Checking the originality of the bike

Another reason it is useful to write down and check the serial number of your bike is to find out if it is a fake or an original. This is what STELS bike sellers write about fake products:

Counterfeit bicycles are manufactured in China. It has been established that counterfeit goods enter Russia through the border with Kazakhstan. This use of the STELS trademark is illegal and criminalizes the confiscation of all counterfeit products. The main differences between originals and fakes:

  • The original box contains: technical characteristics of the bike, a sticker indicating the model, a unique barcode, manufacturer LLC “Zhukovsky Motorcycle Plant” or LLC “Velomotors”
  • The bicycle rim has the STELS logo and the rim size is indicated:
  • The kit includes a pump with the STELS logo, much better than fakes:
  • Bicycles manufactured by Zhukovsky Motorcycle Plant have high-quality connecting rods, pseudo “STELS” are cheap connecting rods from an unknown manufacturer.
  • The original operating manual in Russian includes: a warranty card and a bicycle passport with an indication of the manufacturer’s factory, the date of issue and the OTK mark.