Using 27.2 seatpost in 26.8 frame
5 min read
Asked by: Jennifer Williams
Does length of seatpost matter?
Seatpost length is a further consideration. While a longer post is generally regarded as offering more comfort, the amount of post ‘sticking out’ of the frame will largely be dependent on your frame size/geometry and your own dimensions (inside leg length etc).
Can I put a longer seat post on my bike?
You can adjust the seat post by making it higher (may require a longer seat post than you currently have). Also, some seat posts are straight, whereas others have a setback. The later will move the seat slightly further back on the bicycle.
How do I choose a seatpost diameter?
To find out the diameter of your seatpost, you must remove the seatpost from the bicycle frame and look for the size, which is stamped just below the “Minimum Insert” line toward the bottom. The number will be a three-digit number (such as 26.8 or 27.2 or 31.6).
How long does my seatpost need to be?
a) Seatpost should end at least 25 millimeters below the lower part of the horizontal tube weld to the seat tube. b) Total inserted length should be at least 90 mm from the top end of the seat tube. This is shown in the picture 3. Minimum seatpost insertion depth.
What size seat clamp do I need for a 27.2 seatpost?
Note: The seat clamp diameter needs to match the diameter of your seat tube rather than your seatpost, which is a little smaller. For example, a 27.2mm seatpost (a size commonly found on road bikes) fits inside a 28.6mm diameter seat tube, so it’s a 28.6mm clamp you need.
What is the standard seatpost size?
27.2 mm
Seatpost diameters generally range from 22 mm to 35 mm in 0.2 mm increments. The most common size is 27.2 mm (1.07 in) for most bikes, especially for the higher-quality models. BMX bikes commonly use 25.4 seatposts. In some modern bikes with thicker alloy or carbon tubing, larger diameters such as 30.9 mm are used.
Will a 31.6 seatpost fit a 30.9 frame?
You can fit a narrower post into a wider frame using a shim (a thin sleeve of aluminium or plastic), for example a 30.9 mm dropper post into a 31.6 mm frame. However, there is no way to fit a wider post in a narrower frame, for example a 31.6 mm post into a 30.9 mm frame.
Can I fit a 200mm dropper post?
Quote from video: To find out the portion of seat post that's outside the frame. And then add that to the frames Center. Bottom bracket to top of seat post length. That will determine the frames. Lowest.
How can I make my bike seat taller?
Quote from video: Getting the proper adjustment on your seat is easy first loosen the seat clamp bolt and ensure that your seat angle is level tighten the bolt. And then move on to adjusting your seat height adjust.
How do I choose a seatpost?
Quote from video: There's a very simple method which is to go ahead and loosen up your seat clamp bolt here slide your saddle. And your seat post out. Look at the seat post and see if there's a number printed on there.
Are all seat posts the same length?
Seatposts also vary in length. A shorter seatpost will typically be lighter in weight but less adjustable. Mountain bikes tend to have longer seatposts.
What is a seatpost offset?
Quote from video: We can see this post here is a straight post I lined it on that line of the yoga mat. So you can see it goes kind of straight up and down there. And you got the midline and slant right in line with
How is a seat post clamp measured?
Quote from video: Now you can use your caliper set to millimeters to measure the outer diameter of your frame on opposite sides of the sea tube some of these sizes are close like 34.9 millimeter and 36.4 millimeters.
What size of seatpost clamp is for 25.4 seatpost?
28.6
25.4 seatpost = 28.6 seatpost clamp.
How does a bike seat clamp work?
Quote from video: Похожие запросы
Does seat tube length matter?
Seat tube length doesn’t matter at all for fit. It matters a bit for weight and ride quality, but the geometry of fit depends on the relative position of the bottom bracket, saddle, and the top of the head tube (or the brake hoods, to measure a different way).
Can I shorten my bike seat post?
Cutting your seat post is one of the most effective ways of tearing your seat tube to pieces. Also, if you cut off the bottom, you will have to adjust the max height line by the same amount…that is, you need a certain amount of length in the tube to have the seat post be safe.
Can I get a shorter seat post?
A seat post can be shortened as long as the new size respects the minimum insertion length of the seat post. If you cut the seat post too much, you risk damaging the seat tube.
How do you measure seatpost length?
1: Measure the seat tube from the center of the bottom bracket to the point where you want the seatpost to exit the seat tube. Subtract 1 cm. That is the seat tube length and reference point for the next two measurements.
Is seat tube length the same as frame size?
Frame Size
Bike frames are commonly measured in centimetres or inches representing the length of the seat tube. For example, a manufacturer may measure the seat tube length of a bike as 51cm, and then describe it is a small frame.
Is frame size seat tube length?
This is your most important consideration. Frame size is related to the seat tube length. For example, a 56cm frame will have a seat tube that is 56cm long.