How Much Travel Do I Need On My Dropper Seatpost?

by | Last updated on January 24, 2024

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Should post travel be a function of how tall the rider is? Simply put, Yes. If you are looking to drop the saddle to a position that is still comfortable to pedal in, the rider with shorter legs is going to need less drop, and a long-legged rider more.

Is a longer dropper post better?

100mm is the starting point for most dropper posts. That amount of drop makes a noticeable difference, but we’ve found that

longer travel posts do a much better job of maximising the clearance while maintaining a proper seated pedalling height

.

Is 100mm dropper post enough?

While no one can answer that question for you,

I believe for most riders, 100mm is plenty

. I dont think anything over 150mm is needed for the majority of the riders out there, but ive seen them with 200mm of travel, also, infinite travel is a better way to go.

Is 125 mm dropper enough?


For shorter peeps, 125mm may be enough

. I found 150mm was adequate (have that on my hardtail) but my FS sled is equipped with a 185mm dropper — total bliss.

What does 100mm travel mean?

Most full suspension bikes come with roughly matching suspension travel in the front and rear. So

if the rear shock gets 100mm travel, the bike will likely be spec’d with a 100mm travel fork (or thereabouts)

. 80mm – 100mm Travel: “Cross Country” Bikes.

How is dropper post calculated?

To figure out your max insertion length, measure from the frame bend, routing port, pivot bolt that stops the post from going down, etc. Basically,

the spot where the post bottoms out in your frame, measure from there to the top of your seat tube

.

Do I need a longer travel bike?


A longer-travel bike will be better downhill

and a shorter travel bike will be more efficient for racing. Ultimately, if you can only have one bike for casual riding, or you’re unsure what type of mountain bike you need for your local trails, this category is the best option.

Do I need a dropper post for XC?


XC riders initially resisted dropper seatposts, due to the weight burden, but demand will always father innovation

. As a result, the best short-travel dropper posts are now feathery light, which might be short in terms of comparative travel, but ideal for gram counting XC riders.

What is travel on a dropper post?

Travel.

The travel measurement of a dropper post dictates how far the post can extend

. To choose the correct travel dropper post, measure from the seatpost collar to the seat rail (in your climbing, or highest setting) on your current bike.

How long of a seatpost do I need?

The CPSC rule in the US is that the seatpost must be inserted

two diameters of the seatpost into the frame

. If it’s a 27.2 mm seatpost, it must extend 54.4 mm into the frame, which is 2 1/8′′.

Can I fit a dropper post on any bike?


A dropper post can be a great upgrade for any mountain bike, but it’s important to find one that’s compatible with your bike

. Here’s a few things you’ll need to consider: Seat post width – you will need to identify the width of your existing seat post as this is the size you will need when choosing a dropper.

How much weight does a dropper post add?

A dropper post averages

600 grams

, give or take. The average weight of aluminum alloy seat posts is around 250-300 grams. Less for most carbon seat posts. So you’re doubling the weight.

Do dropper posts have suspension?

PNW Components says, “

The Coast dropper is the world’s first Suspension Dropper Post

, combining ride smoothing suspension and the benefits of a dropper into one seat post. This dropper is designed to help riders on all types of bikes, from packed up trekkers, to the cross country wanderers, even the weekday commuters.”

How do you adjust a dropper post?

How long does a dropper post take?

Typically, droppers are available in travel lengths of

80mm,100mm, 125mm, and 150mm

, however, both longer and shorter options also exist. Before buying, make sure the post is long enough when extended to give your preferred pedaling height.

How much is a drop in a dropper?

Pharmacists have since moved to metric measurements, with a drop being rounded to exactly

0.05 mL

(50 μL, that is, 20 drops per milliliter).

Is 120 enough to travel?

In addition, you’re not likely to notice much difference between a 120mm, 130mm, and 140mm fork. Honesty,

a 120mm fork is enough travel for most Trail riders

.

Is 100mm travel enough on a 29er?


yes, it’s plenty

. pro-Dh’ers need/use 200mm-ish. mere mortals will be riding stuff that’s half as gnarly*, half as fast*. that’ll be 100mm being plenty for us then.

Is 170mm travel too much?

But Yeah,

170mm will still be fine

, you are getting on for DH-esq travel, however if you think you might make use of it, or it will help you man up a shade more then there’s no harm in giving it a whirl.

Can 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.

How much volume is a dropper?

A typical dropper has about

1.5 ml

. there are 30 ml in this bottle.

How do you measure a dropper?


Pick up the dropper and find the mark on the dropper for the amount or dose of medicine needed

. There are 2 different measurements, teaspoon (tsp.) and milliliter (ml.), as shown on the pictures of the dropper. (1 teaspoon = 5 milliliters.)

Is 160mm travel too much for trail riding?


160mm of travel is only really needed if you’re hitting big hucks, or you’re smashing really long bouldery fast descents

. Do I need 160mm travel? 99% of the time, no.

Is 150 mm travel too much?


150mm is absolute overkill for every trail in the lower peninsula

. Get a downcountry bike instead if you want to go the full suspension route. Or a rowdy hardtail.

How much travel should you use?

Set sag between 20-30%.

If you only ride smooth trails, you should still use about 3/4 of the travel

. Measure this, since the exposed stanchion is longer than fork travel. If you start to ride harder or start to ride rougher trails and bigger drops, you will need to add air.

Emily Lee
Author
Emily Lee
Emily Lee is a freelance writer and artist based in New York City. She’s an accomplished writer with a deep passion for the arts, and brings a unique perspective to the world of entertainment. Emily has written about art, entertainment, and pop culture.