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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1
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0answers
46 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
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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 ...
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2answers
95 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
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1answer
589 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
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1answer
128 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
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1answer
112 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
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1answer
57 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
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1answer
79 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
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0answers
69 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
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1answer
56 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
84 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
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1answer
81 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 ...
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0answers
93 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
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2answers
338 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
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0answers
67 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
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1answer
100 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
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1answer
124 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
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0answers
173 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 ...
2
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1answer
172 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
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2answers
1k 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
199 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
490 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 ...
12
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2answers
2k 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
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1answer
1k 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
473 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
291 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
142 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
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1answer
342 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
3k 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
85 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
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2answers
164 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
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1answer
80 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
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3answers
4k 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 ...
1
vote
1answer
3k views

How do I figure out the right size seat post for my bicycle?

I found a discarded Mongoose Alta frame with no seat post or seat that I want to refurbish. How do I find out what size or type of seat post and seat I should get as suitable replacements?
1
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2answers
1k views

Is my 2017 Trek Fuel EX 5 Stealth internally routed dropper seatpost compatible?

I have got a 2017 Trek Fuel EX 5. After Christmas I may be upgrading it with a dropper seatpost. I would like to know if it is compatible with an internally routed dropper seatpost.
2
votes
2answers
456 views

Will 0.5mm gap/play in a seatpost shim work without cracking the seatpost tube?

I have a Day 6 ebike; it's a large frame--the Samson model. The seat post (the frame member) is 31.4325mm or 1.2375 inches (I.D.) at the clamp collar. The seatpost (the seat support post) is likewise ...
2
votes
1answer
113 views

Baby seat for stoker's seat post on tandem

My wife and I used to both commute by bike, and now that our child is old enough to go on a bike, we'd like to do so again. She has already installed a front-mounted baby seat on her dutch-style bike, ...
1
vote
1answer
284 views

seat tube deformed, is it dangerous?

I just bought a 2nd hand salsa El Mariachi frame, that I will start to build this week. Unfortunately when I received it I realized that the previous owner probably has ridden it with the seatpost too ...
0
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3answers
222 views

Brake hanger causing seatpost slippage?

I have an aluminum seatpost in a steel seat tube and I have been noticing some slippage lately. The size of the seatpost and of the seat collar match perfectly the size of the frame. I inspected the ...
0
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2answers
2k views

Clicking/cracking noise while seated

My initial suspicion was that the clicking/cracking noise my bike makes was coming from my bottom bracket. But today, I noticed that when applying full power while standing up, no clicks are present. ...
2
votes
2answers
2k views

Advantages with longer seatpost in the seat tube?

I am about to buy a new seatpost and I am wondering what's the ideal length. The one I have now is 33cm long, even though it only sticks out of 10cm from the frame (measured from the seat collar to ...
2
votes
1answer
3k views

What's this torque specification on the seatpost for?

I read 12Nm torque on my seatpost (a Cinelli Vai seatpost). What does this torque refer to? I would assume it's for the two bolts above that tie the saddle rail to the seatpost, but at the same ...
0
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1answer
313 views

Require seatpost size of Dahon Vitesse D7

I have a Dahon Vitesse D7.. Have lost the seat post. Can you let me know what is the size of the seatpost will fit to the mentioned model
4
votes
5answers
6k views

What type of grease to prevent seat post sticking?

What type of grease should I buy specifically to prevent the seat post from getting stuck in the seat tube? I believe its aluminum. Is there all-purpose grease that I can use for other parts of the ...
3
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3answers
213 views

Getting the right seat post

I'm currently rebuilding an old steel frame. After measuring it I was sure it'd take a 27.2mm seat post (see picture) so that's what i bought. Sadly it doesn't fit (despite some "encouragement" with a ...
7
votes
1answer
943 views

Cracked seat post

Just been cleaning my Canondale CAAD8 and noticed these cracks in the seat post - they look like cracks in some kind of outer covering and wondering if someone can tell me how much of a problem they ...
4
votes
3answers
4k views

Saddle height for toddler's balance bike

My toddler (two and a half years old) has just started scooting around on her balance bike. I'd like to ensure that the saddle is at the best height for her to learn to balance. I know the rules of ...
4
votes
1answer
3k views

Are seatpost shims safe to use - for the frame, seatpost, and the rider?

Are seatpost shims safe to use from the perspective of the frame, seatpost, and the rider? My concern is that seatpost shims only support the seatpost for a few centimeters - while a properly ...