How To Correctly Choose A Seat Post For Bike

Although some them may be strange, stem change is a common practice in the mute of the rider, to properly suit our position during pedaling, by break or for filing a few grams to our bike. But, do you know how to correctly choose a new post for your bike? In this article we give you a few tips that you should keep in mind.

At the time of choosing a new seatpost you must take into account the following factors:

  1. measure.Normally, when we have to choose a new component of our bike we went to see the dimensions and characteristics of the originating element.In the case of stems, this practice is not always correct. Sometimes we can be with pictures of bikes that have some “errors” of manufacture or finish, i.e., machining of parts is not correct. This causes that, for example, standpipe inside where it is placed the post, there may be burrs, welding remains or even the inner diameter is not homogeneous. This can cause that, when you purchase a new seatpost, this does not conform correctly to our bike. This aspect is very important, especially for carbon Seatposts, since incorrect setting may result in a higher pressure during pedaling, reducing the service life of this. To avoid problems of this kind, it is advisable to check the degree of tolerance between the riser and the seatpost. In some cases, to get a proper fit of both components, will need manual (reaming) mechanization of pipeline or the use of aluminum caps.
  2. couple of tighten.This aspect is especiallyimportant in the case of carbon Seatposts. It is important to always use torque wrenches, which allow us to adjust the tension and strength with which we adjust hardware (couple of tighten). If we exert too much pressure on the nuts and bolts, in the case of stems, can cause strangulation and consequent breakage of some fibers of carbon, reducing its life span and even facilitating a possible break.

What Should We Know Before Installing A New Seatpost?

The installation of an aluminum seatpost or one carbon require different care, i.e., in the case of carbon fiber, take more care not to damage some fibers. Here are that we must bear in mind in the case of the aluminum stems:

If the standpipe and the seatpost diameter is adjusted too and difficult installation, we will have to ream bike tube or acquire a seatpost with a smaller diameter.

In the case of problems with the tighten the seatpost, have too much slack, will have to avoid over tighten the closure. A Council is to place the sealing ring groove coinciding with the slot in the box, in this way will achieve higher pressure washer.

Remember to periodically grease, in this way we will avoid problems in the future at the time remove or adjust this.

It should take into account the indications of the manufacturer with respect to the minimum and maximum distances of insertion into the tube. Failure to follow these instructions may cause damage or break the seatpost.

In the case of carbon Seatposts, we have to pay attention to other aspects:

Place the CAP, in the event that we use this add-in, in the opposite direction to the overture of the standpipe, in this way we will avoid too much in the press.

It is very important to not get fat. Thoroughly clean any remaining oil or fat, this will help a proper tightening.

Make sure that in the standpipe there is no imperfection (burrs, welding rest…).

Be sure to choose the correct size of post.

Check and make sure that the level of tolerance between vertical tube and seat post are correct.

It is not advisable to cut the length of the carbon seatpost. This process must be done by qualified personnel in the manipulation of carbon fiber and with the right tool.

Tools Required For Installation

We will only need:

Torque wrench. This type of tool allows us to properly adjust torque of tightening. We will only have to indicate the pair of squeeze that indicates the manufacturer and when we come to it, the key will pop up, indicating that we have reached the desired limit.

Caliber. With this tool you can measure the diameter of the seatpost and riser. It is useful to determine the degree of fit between tube and seatpost.

In the case if necessary and we dare to be machined riser will need a reamer. It is a rotary tool with a blade that will help us increase the inner diameter of the pipe.

Most Common Measures Of E-Post

Then you do a summary of post more measures currently used. These references are indicative, if you want to change your post make sure which is the measurement you need.

Pictures of steel: 26.8.

Pictures with incorrect machining: 27. Measures clamp: 31.8.

Pictures with standard measure (ACXERO, aluminum and carbon): 27.2. Measure clamp: 28.6 / 31.8.

Specialized, Iron Horse and Giant pictures: 30.9. Measure clamps: 34.9.

Standard frames aluminum and carbon: 31.6. Measure clamps: 34.9.

Dahon pictures: 33.9 (34).

Colnago road pictures: 36.

In the case of clamps used by:

Trek, used measure is 36.4.

Scott uses measures of 38.4.

Although some them may be strange, stem change is a common practice in the mute of the rider, to properly suit our position during pedaling, by break or for filing a few grams to our bike. But, do you know how to correctly choose a new post for your bike? In this article we give you a few tips that you should keep in mind.

At The Time Of Choosing A New Seatpost You Must Take Into Account The Following Factors:

  1. measure.Normally, when we have to choose a new component of our bike we went to see the dimensions and characteristics of the originating element.In the case of stems, this practice is not always correct. Sometimes we can be with pictures of bikes that have some “errors” of manufacture or finish, i.e., machining of parts is not correct. This causes that, for example, standpipe inside where it is placed the post, there may be burrs, welding remains or even the inner diameter is not homogeneous. This can cause that, when you purchase a new seatpost, this does not conform correctly to our bike. This aspect is very important, especially for carbon Seatposts, since incorrect setting may result in a higher pressure during pedaling, reducing the service life of this. To avoid problems of this kind, it is advisable to check the degree of tolerance between the riser and the seatpost. In some cases, to get a proper fit of both components, will need manual (reaming) mechanization of pipeline or the use of aluminum caps.
  2. couple of tighten.This aspect is especiallyimportant in the case of carbon Seatposts. It is important to always use torque wrenches, which allow us to adjust the tension and strength with which we adjust hardware (couple of tighten). If we exert too much pressure on the nuts and bolts, in the case of stems, can cause strangulation and consequent breakage of some fibers of carbon, reducing its life span and even facilitating a possible break.

What Should We Know Before Installing A New Seatpost?

The installation of an aluminum seatpost or one carbon require different care, i.e., in the case of carbon fiber, take more care not to damage some fibers. Here are that we must bear in mind in the case of the aluminum stems:

If the standpipe and the seatpost diameter is adjusted too and difficult installation, we will have to ream bike tube or acquire a seatpost with a smaller diameter.

In the case of problems with the tighten the seatpost, have too much slack, will have to avoid over tighten the closure. A Council is to place the sealing ring groove coinciding with the slot in the box, in this way will achieve higher pressure washer.

Remember to periodically grease, in this way we will avoid problems in the future at the time remove or adjust this.

It should take into account the indications of the manufacturer with respect to the minimum and maximum distances of insertion into the tube. Failure to follow these instructions may cause damage or break the seatpost.

In the case of carbon Seatposts, we have to pay attention to other aspects:

Place the CAP, in the event that we use this add-in, in the opposite direction to the overture of the standpipe, in this way we will avoid too much in the press.

It is very important to not get fat. Thoroughly clean any remaining oil or fat, this will help a proper tightening.

Make sure that in the standpipe there is no imperfection (burrs, welding rest…).

Be sure to choose the correct size of post.

Check and make sure that the level of tolerance between vertical tube and seat post are correct.

It is not advisable to cut the length of the carbon seatpost. This process must be done by qualified personnel in the manipulation of carbon fiber and with the right tool.

Tools Required For Installation

We will only need:

Torque wrench. This type of tool allows us to properly adjust torque of tightening. We will only have to indicate the pair of squeeze that indicates the manufacturer and when we come to it, the key will pop up, indicating that we have reached the desired limit.

Caliber. With this tool you can measure the diameter of the seatpost and riser. It is useful to determine the degree of fit between tube and seatpost.

In the case if necessary and we dare to be machined riser will need a reamer. It is a rotary tool with a blade that will help us increase the inner diameter of the pipe.

Most Common Measures Of E-Post

Then you do a summary of post more measures currently used. These references are indicative, if you want to change your post make sure which is the measurement you need.

Pictures of steel: 26.8.

Pictures with incorrect machining: 27. Measures clamp: 31.8.

Pictures with standard measure (ACXERO, aluminum and carbon): 27.2. Measure clamp: 28.6 / 31.8.

Specialized, Iron Horse and Giant pictures: 30.9. Measure clamps: 34.9.

Standard frames aluminum and carbon: 31.6. Measure clamps: 34.9.

Dahon pictures: 33.9 (34).

Colnago road pictures: 36.

In the case of clamps used by:

Trek, used measure is 36.4.

Scott uses measures of 38.4.