The seat post is a partbicycle, which acts as a connecting link between the frame and the seat of a two-wheeled vehicle. Depending on the design, the element can be fixed with a bolt or eccentric clamp. The upper part of the seat post contains a lock, which serves as a means for fixing the seat guide.
Materials of manufacture
- aluminum alloys - are now actively used to produce a wide variety of pin models, from the lowest level products to the top products;
- steel - the simplest option, which can be seen on cheap bicycles;
- Carbon plastic is a strong and light material that is used in the manufacture of seatposts for modern highway and cross-country bicycles;
- titanium - an effective solution for the production of structures that are installed on high-level bikes (due to high cost, it often becomes the choice of professional athletes);
- scandium - an unused, but at the same time, high-strength and lightweight material, from which the seat pins of the highest class are made.
Hard Pin
Integrated pin
It is a monolithic construction connected to the bicycle frame. Most often, the material used is carbon.
Often an integrated seat postcast once, specifically in accordance with the parameters of the body of the owner of a two-wheeled vehicle. Therefore, this design does not allow you to adjust the height of the landing.
Specific in nature, the technology is designed primarily to ease the bicycle. In operation, functionality and convenience are somewhat affected.
Pin with automatic height adjustment
The adjustable seat post is useful, first of all, to the owners of the downhill bikes, who need a quick change of the saddle position with extreme, high-speed off-road driving.
Seatpost with shock absorber
It is based on the application of a mechanism thatprovides softening of blows when the cyclist performs jumping tricks and overcoming difficult sections of the trails. A seat post with a shock absorber enables extreme sportsmen to feel more comfortable when traveling.
According to the design, it can be either lever or telescopic. The main production material is lightweight aluminum alloys.
Types of locks
The lock is an element of the seat post that servesto connect the upper base of the structure to the seat, adjust its longitudinal displacement and tilt. Can be presented in the form of a separate part, which is suitable for installation on various variants of pins or to make a single whole with a sub-unit.
According to the design features, the locks are divided into the following types:
- Single-bolt - provide the possibility of a fairly rough adjustment of the seat position.
- Two-bolt - allows you to fine-tune the tilt and displacement of the platform for the bicycle's landing.
- Locks of original design - patented, complex products of individual manufacturers. They differ in specific assembly and functionality.
Service
Lubricate the seat post pin is recommended asat least once in the off-season. First, the retaining eccentric is loosened or the bolted joint is released. The seat post for the bicycle is released from the frame opening. Later, the old grease is removed and a new one is applied. Before performing the procedure, the surfaces are pre-cleaned of accumulated contaminants.
Finally, the pin is installed back into the bicycle frame. Adjustment of the seat position is made, the eccentric or bolted fastening is securely fixed.
Finally
There are several bicycle parts,on which it is not worth saving. These include steering columns, braking systems, fasteners. The seatpost, which plays the role of a vital detail, is not an exception. The latter should be selected depending on the type and purpose of the bike, riding style, needs, goals and tasks of the owner of the bike. Unexpected damage to the component can cause serious consequences in the form of injury or creating a potentially dangerous situation on the road.