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Primo Seatposts

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18 Questions : 19 Answers

Q&A for Seatposts category

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What is the material most resistant to scratches and gouges from being moved in and out of the bike frame? (I'm also into super lightweight everything)

thanks.
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5 months ago
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Answer: 
As the seat post is clamped into the seat tube, it's almost impossible to avoid clamping marks. Being careful when raising/ lowering the post is the most effective way to avoid scratch marks, but some riders use a smaller seatpost than they require and fit a plastic shim to the seattube to try and help avoid damage. Carbon posts are always an option, and some carbon assembly gel/ paste will help to protect the surface from excessive clamping forces.
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5 months ago
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Answer: 
Natural titanium, or any post with a hard anodised or ball burnished finish will likely be harder wearing than a lacquered carbon or painted coating.

Despite this they will still mark over time with repeated height adjustment especially with a dirty or gritty seat tube.

Thomson Elite seatposts have a very good hardwearing finish, but even still you should consider a silver one to minimise the damage to the finish on the outside of the seatpost.

In addition make sure that inside of your seat tube on your frame is kept squeaky clean, even rinsing it with a liberal spraying of your favourite light oil/dispersant from time to time (for example WD40, GT85, STP80 or equivalent). Not too much though, you don’t want it collecting on your BB bearings!

Thomson seatposts are also very light for their strength.

An alternative would be to runner a smaller diameter seatpost and use a plastic shim, but again make sure that the shim is kept clean.

Finaly, consider a dropper seatpost, there are some lighter models out there (for example the KS Lev and FoX DOSS, and even the Thomson Elite dropper).

Depending on length/drop they are lighter than (for example) the RockShox Reverb. Any of these posts, albeit heavier than the Thomson Elite non droping varient can be clamped in the frame and will negate the possibility of the post being marked by your frame when constantly adjusting the saddle height.

I’d recommend getting one with a silver or light coloured stanchion as for example even the black anodising on the Reverb fades over time with repeated saddle height adjustment.

Make sure you use antiseize compund if you intend to clamp a dropper post in your frame for an extended period.
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2 months ago
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OLDMELDRUM,GB
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Cervelo S1 compatible seat posts

I am looking for a new seat post for my cervelo s1, I have asked other reputable cycling suppliers the same question to no avail? Cervelo don't offer any official measurements.

kind regards

Marino
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Answer: 
Due to the in depth technical information that we will require to answer your question, I would ask that you contact a member of our tech team using the link below. They will be happy to assist you further: http://www.chainreactioncycles.com/...
1 year, 2 months ago
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Answer: 
The “Offset” of a seatpost is how far the central point of the rail attachments sit from the actual central point of the seatpost. A “Zero Offset” seatpost will have the rail attachment directly over the central point of the seatpost whereas a “20mm Offset” model will have the rail attachment sitting 20mm further back from the central point of the seatpotst.
1 year, 2 months ago
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I love the idea of getting a Dropper Seat post for my Lapierre 720 DH bike, but not sure one is available for my bike's requirements...

My current post dimensions are: 31.6x250, which is a very short post.

Can you give me any advice on this?
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Answer: 
The Da Bomb (350mm Total Length) post mentioned has a recommended insert of 170mm which fits the whole way to the collar which is perfect for your bike.

The Rock Shox Reverb is also another option to consider (355mm Total length has an insert of 190mm).
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seat post dia is 31.6 im not sure what to go for 380 or 420 i'm 6f 2"
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9 months ago
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Answer: 
The 380mm and 420mm are in relation to the overall length of the seatpost; it is advised to compare this to the length of your current seatpost for an accurate selection.
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8 months ago
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Age: 25 to 34
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8 months ago
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Answer: 
The Thomson Elite seatpost is only available in a 30.9mm or 31.6mm diameter, both of which will be too large for your 30mm seat tube. You could opt for a 27.2mm dropper seatpost and use a shim to connect it to your 30mm seat tube.
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Hi
Please recommend a seatpost for Kore T-Rail Distance Saddle 2012 you've got.
Diam 31.6mm.
Thx in advance.
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8 months ago
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Answer: 
Возможно, Вас заинтересует опция T-Rail Alloy Seatpost 2012 либо Kore T-Rail Carbon Seatpost 2012.
8 months ago
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I have a Cannondale CAAD8 in X Small frame size with a stock 27.2 x 300mm seatpost.
Looking to replace with a FSA K Force carbon seatpost, will 350mm fit? and what size clamp to go with this?? thanks!
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8 months ago
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Answer: 
If there is enough room in the frame seat tube for an additional 5mm of seatpost insertion then the 350mm seat post will be a viable option. It would be advised to measure the seat tube on the frame before committing to a seat post size.

In regards to the seatpost clamp size; a 31.8mm Clamp is required.
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Age: 45 to 54
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Answer: 
Trek list the seatpost diameter as 31.6mm diameter.
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Hello

Was wondering how simple it would be to trim the length of a carbon seat post.

Is it even recommended ?

If so what type of saw should I be using.

Thank you in advance
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Answer: 
Yes this is completely fine, it is recomended to use a hack saw with a Carbon Blade and it is a fairly simple procedure.

As always when shortening seatposts, steerers etc... Measure Twice Cut Once; this way no mistakes can be made.
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