Questions tagged [seatpost]

Questions referring to the part of a bike that extends upward from the seat tube on the frame to the saddle.

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2
votes
2answers
45 views

Compatible seatpost for Brooks C13 saddle with 7x9 oval carbon rails?

I just purchased a Brooks C13 saddle (7x9 oval carbon rails, the more recent version with no tape) and was hoping it would fit on my existing post (2016 Jamis Coda Sport - it's a top/bottom clamp with ...
6
votes
4answers
425 views

What do I need to change to avoid 'bouncing' in my bike seat at high RPM?

I've noticed while cycling on my road bike that, when I try to pedal very quickly, I start to 'bounce' a little in my seat. As in I'm lifting off the seat a little with each pedal, so feel I'm not ...
3
votes
0answers
56 views

Need help understanding the components of a carbon fiber seat tube to properly unseize it

I recently picked up my first carbon fiber bike which has a carbon fiber seat post that seized to the frame due to rust. I did not initially think that was possible but after looking at it, I believe ...
3
votes
1answer
45 views

Direction of saddle clamps on seatpost

I have a seatpost from a Canyon Dndurace AL 7.0 from 2016. The seatpost has a saddle clamp consisting of two parts. The lower part has one long end and a shorter one. I can rotate both parts of the ...
2
votes
1answer
57 views

Magura Vyron dropper seatpost internal shaft can be easily twisted

I had a very light crash (in fact just rode into a bush) after which I noticed I twisted magura vyron seat post. Apparently my seat post clamp was too tight.. Now it can be twisted when some force is ...
1
vote
1answer
40 views

Increasing length of seatpost on a foldable bike

One of my bike is this little Dohiker 14" electric bike, but I actually pedal a lot when riding it, and the seatpost is a bit too short. It is about 50cm long, and I would need a few more centimeters. ...
5
votes
1answer
82 views

Seat rail clamp spins in the seat post

When I last got on my Specialized Stumpjumper the seat wanted to spin freely. The seat post was firmly clamped in the frame. With further inspection the seat is spinning where the seat clamp goes into ...
2
votes
3answers
119 views

How do I put a lower seat clamp on my Alinker walking aid?

I have a walking aid called an Alinker http://www.thealinker.com/ It looks like a bicycle but it has no pedals and any bike shop can service it. My issue is the seat it's a older style so has 2 ...
1
vote
1answer
69 views

Can I use Danco waterproof grease sold for plumbing and faucets to lube seat posts and pedal threads?

I have this tube of lube lying around, which is good for plumbing fixtures. If this is good enough, I don't have to go out to hunt for bike grease during shelter in place.
2
votes
0answers
548 views

3 bolt exercise bike saddle adapter in the UK

The saddle currently fitted to my exercise bike is attached to a fixed plate with 3 bolts on it, I can't find any adapters to fit more traditional saddles (rails/posts) that are available in the UK. ...
1
vote
4answers
217 views

badass-stuck seatpost [duplicate]

I've recently found a nice bike with a steel frame. Well I noticed the aluminium seatpost was stuck but had no idea how heavily. To be honest I never had a similar problem and underestimated that ...
0
votes
2answers
169 views

What to use on saddle clamp?

I'm purchasing a new seat-post as my saddle refused to stay at the same angle with my current one; it was a second hand bike (B'Twin Triban 500) with a single bolt clamp. I'm going to switch to a two ...
3
votes
1answer
157 views

Very confused about the seatpost clamp

I can't figure the seatpost clamp on my bicycle (maybe it's stuck?). I've had it for a few months, it's quite old. I hit a bump in the street and the force lowered the seat but now I can't figure out ...
2
votes
2answers
674 views

Titanium seatpost in steel seat tube, good idea?

I want to use a titanium seatpost in a frame with a steel seat tube (Columbus Spirit tubes). Is it a good solution? I want to understand if the metals play well from a structural point of view, and I ...
4
votes
1answer
95 views

Seat post shims

I have 3 bikes (2 mtb 1road) all with different seat post diameters. Has anyone used shims. I have 1 favorite saddle. I can buy 2 shims for the fraction of the cost of new saddles. Just switch seat ...
1
vote
0answers
53 views

Thudbuster ST versus Gel-Padded Saddle

I just upgraded from a hybrid to a gravel bicycle (Fuji Jari 2.3). My hybrid (a 2000 Giant Cyprus) had a hydraulic suspension seat post and a generously-padded comfort gel saddle. I have a weakened ...
10
votes
7answers
3k views

How to stabilise the bicycle seatpost and saddle when it is all the way up?

It is a standard column bicycle seat and I realised maybe I should have it raised to top (I can still stand the bicycle up using my toes) but the saddle rocks as there is no column to stop it moving ...
0
votes
2answers
113 views

Seat clamp keeps unscrewing, what is the preferred solution?

To prevent stealing of the seat, I replaced my "fast lock" seat clamp with a model using a regular screw: The problem is that the screw keeps unscrewing, and I'm already tightening quite strong. I ...
4
votes
1answer
622 views

Suggestions for protecting jeans from saddle clamp bolt

I’ve got a bike whose seat post uses the traditional style saddle clamp. It works! The saddle is firmly attached to the bike. Hooray. However. This bike is sort of a “café racer” - I mainly pootle ...
4
votes
1answer
228 views

Bolt holding saddle to seatpost broke

I have a saddle somewhat similar to this one. One bolt holding saddle clamp to the seatpost. Some half a year ago I was riding with no hands and leaned back a bit. Suddenly, I fell down the bike on ...
1
vote
1answer
127 views

Does a seatpost affect the rigidity of the frame?

Is it possible to use a zero offset seatpost to make the bike frame more rigid? I consider the Crank Brothers Cobalt 1 Straight Seatpost.
0
votes
1answer
60 views

which suspension seatpost for a granny who wants a comfortable ride while cruising the neighborhood [closed]

It is so hard to find info for the granny who just wants some general info for a comfortable ride. I don't need a professional mountainbike seatpost and not worried about if it is carbon or not, don'...
1
vote
1answer
198 views

Reverb dropper post lever loose

The lever to raise and lower my Rockshox Reverb Stealth 31.6 dropper post comes loose occasionally and can swing around 360 degrees. My seat is then stuck until I tight up the screw. When I re-tighten ...
1
vote
0answers
104 views

Carbon integrated seatpost small dent

I have a Ridley Noah frame that has a really small dent in the integrated seatpost, the dent itself does not seem to be caused by an object hitting it. It looks like it has been caused by hanging it ...
-1
votes
1answer
66 views

Fuji Aloha 2.0 Seatpost too long?

Let me explain my problem. I just bought a used Fuji Aloha 2.0 (56 cm), and the saddle is a little high for me. Actually, the original seatpost is taking approximately 2.4 inches (6 cm) from me. If ...
3
votes
1answer
117 views

Rockshox Reverb dropper seatpost squashing from new

I have a new bike with factory-fitted Reverb Stealth dropper seatpost. Having never had one before, I would like to know what movement you would expect on a seatpost if any. If I lift the bike up by ...
5
votes
1answer
130 views

'Micro adjust' saddle clamp not allowing fine enough adjustment (on SP12 suspension seatpost)

I have an Suntour SP12 seatpost, and the saddle is held on by two clamps on either side. The clamps are splined, but these splines only allow adjustment of around 6-8 degrees which is far too much ...
1
vote
0answers
98 views

Seat clamp slid the seat down as I was riding, hurt my knees [closed]

So I was riding a community shared bicycle that many city's have that you can ride around for a small fee. While I was riding it, the seat clamp must have been loose and the seat was sliding down ...
4
votes
2answers
391 views

How to access seat-post lever on the handlebar?

I would like to change the position of my seat-post lever but in order to do so, I have to untighten its screw. The problem is that I can't manage to access the screw, due to the presence of the hard ...
1
vote
0answers
85 views

Any 36.4mm Dropper Seatposts?

I've a diameter of 36.4mm, are there any dropper seat posts that make the size diameter for my bike?
1
vote
1answer
151 views

Is there a non-proprietary standard for oval seat-tube/post?

I see Pinarello Dogma and Gan S frames have a proprietary seatpost/seattube combination, which don't have a circular section. An advantage of that design in my opinion is that it's impossible to have ...
2
votes
1answer
132 views

How do I lower the saddle on a Scirocco bicycle?

I've acquired a second-hand ladies' Scirocco Elegance 21 speed bicycle. I need to lower the saddle but can't quite see how it can be done.
2
votes
0answers
277 views

upgrade traditional saddle clamp (not seat tube clamp)?

I'm currently restoring my folding bike and it has a large diameter (34 mm/1.34 in) seatpost that tapers to the standard 22 mm/0.87 in diameter at the end. The bike currently uses that traditional ...
4
votes
1answer
258 views

Fitting a saddle with non-round rails to a Stevens Arcalis

What options are there to change the saddle mount on an aero seatpost of an Stevens Arcalis 2017 to mount a saddle with non-round carbon rails? Below you can see the saddle mount that is designed to ...
3
votes
2answers
2k views

Suitable bicycle grease for aluminium and steel materials?

I hope you enjoy your day. A few days after of using my bike I have some troubling feeling about it. I can hear a cracking sound or something similar, and on the internet I found out the cause. I ...
3
votes
1answer
268 views

Can I remove dropper seatpost of the Lapierre Edge 327 plus?

I recently bought a Lapierre Edge 327 plus mountain bike, that has a dropper seatpost that can be adjusted from the left handlebar. I want to remove the seatpost when I park the bike in "unsure" ...
4
votes
1answer
650 views

Is it possible and safe to attach this type of seat to suspension seatpost?

I have a Merida Crossway 20 bike, and want to change its saddle. Now after buying a new one I am not sure it is even possible to mount it. I had forgotten I have a suspension seatpost, but the new ...
13
votes
2answers
3k views

What are the differences between a seatpost-mounted and frame-mounted rear rack

I am in the market for a rear rack. I noticed that there are two categories of rear racks: Seatpost-mounted rear racks, such as this one: And frame-mounted rear racks, such as this one: I'm ...
3
votes
1answer
2k views

How to change the seat clamp on a dropper post?

While trying to tighten the screws on the seat clamp on my wife's bike, I overtightened one of the screws, damaging both the screw and the seat clamp. (I had used a torque wrench and had set it to the ...
7
votes
1answer
2k views

Bike comes with frame integrated bolt seatpost clamp - can I cut it off and use QR?

I've got a Marin Pine Mountain 1 2016 - it comes with a frame integrated bolt seatpost clamp. Is it possible to cut this off and use a QR seatpost clamp instead? Bike : Seat Clamp :
2
votes
2answers
678 views

Increase saddle height

I tried the Xiaomi qicycle electric folding bike and I really liked it. The only problem is its size. I already know how to raise the handlebar, but I'm not sure how to raise the seat. It should be ...
3
votes
2answers
502 views

How to repair / create a CF seat post clamp interface?

I have a carbon Trek Madone 4.7 road frame with a nonexistent clamp interface. At the top of the seat tube, there should be a smaller-radius section of notched aluminum on which to place a clamp. That ...
5
votes
2answers
202 views

Pannier rack for larger diameter seat post

I have recently purchased an old, second-hand folding (or at least collapsable) bike, a Daewoo shuttle to be precise. In order to use it for commuting, I would like to fit a pannier rack onto it. It ...
0
votes
1answer
527 views

How to remove alu seat post from carbon frame?

My aluminium seat post is seized into my carbon frame. To make matters worse the seat post is snapped at the seat post collar - nasty crash. Anyone have a way to get it out? Or is it time for the ...
2
votes
1answer
5k views

Oval carbon saddle rails compatibility

I have a new saddle and I want to buy a compatible seatpost. The saddle rails is CARBON 7x9 as specified by the manifacturer. I want to understand better the compatibility of this kind of oval rails. ...
8
votes
6answers
3k views

Remove lubricant from seat tube and seat post

I recently bought a second hand bike. It rides pretty well, the only nuisance I have is that the previous owner has spread some lubricant on the seat post. I am pretty sure of this because I see on ...
2
votes
1answer
90 views

“261E” seat tube on an old bike frame

I've bought an old second hand bike frame and I'm trying to build it up into a road bike. Things have been going quite well, but I've got a bit confused by the seat tube. At the top of the seat tube ...
2
votes
2answers
209 views

Seat Post Binder - Fuji CF1 - circa 2008

I'm looking for a replacement seat binder for a 2008 Fuji Aloha CF1 - The one I had cracked and will no longer work. I have contacted Fuji but they politely laughed at us! Most shops looked through ...
1
vote
1answer
98 views

Titanium fork in a chromoly frame

I have heard there can be issues when dissimilar metals are in prolonged contact. Would that apply to titanium and chromoly? Ive got may eye on a new titanium fork for my old chromoly frame bike.
6
votes
3answers
7k views

Seat post slipping down

It looks like my saddle/seatpost is slowly sliding down into the frame, so every 2–3 months I have to move it up by 1–2cm. Yet I tighten the clamp pretty tight, so I can't move the saddle ...