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Noobie needs help measuring my seat post clamp

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Logos

Vital BMX member Logos 105159 Logos /images/default/avatar/c50.png https://www.vitalbmx.com/community/Logos,105159/all 05/01/13 1 2

Posts: 3

Joined: 5/1/2013

Location: USA

5/1/2013 8:14 PM

Im fixing up a old bike I was given and when I ordered a new seat post clamp I ordered too big.After talking to the seller, searching google, and talking to my local bike shop (deals with road bikes, not BMX) Ive been unable to find an answer.

So do I loosen the clamp and measure from the inside with calipers? or the outside?

The silver is the old one, the red one was listed as 34.9mm on ebay and is way to big

Photo

Ive got a 2005 Specialized Fuse IV with a 33.71mm outside diameter

Photo

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TheBrandonFranke

Vital BMX member TheBrandonFranke 90962 TheBrandonFranke https://bmx-media-bucket-photo.s3.amazonaws.com/photos/users/90962/avatar/c50_blazerLS1Bucket_1424231192.jpg?1424230485 https://www.vitalbmx.com/community/TheBrandonFranke,90962/all 02/26/12 112 2408 5 2

Posts: 2520

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Location: Reynoldsburg, OH USA

5/1/2013 8:21 PM

I thought it was . 25.4mm with it measured while tightened
But if im wrong I would buy one that is 33mm

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Refs:tomdon x4,Xxohioanxx,BigCurn, Don't remember the rest

Logos

Vital BMX member Logos 105159 Logos /images/default/avatar/c50.png https://www.vitalbmx.com/community/Logos,105159/all 05/01/13 1 2

Posts: 3

Joined: 5/1/2013

Location: USA

5/1/2013 8:39 PM

Well that's what Im asking.Are they sold based on what the measure once tightened from the outside diameter?or loose from the inside diameter?

Because then your right a 33mm sounds good
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Brayden_Buckingham

Vital BMX member Brayden_Buckingham 82424 Brayden_Buckingham https://bmx-media-bucket-photo.s3.amazonaws.com/photos/users/82424/avatar/c50_1540587578224_1540613298.jpg?1540613267 https://www.vitalbmx.com/community/Brayden-Buckingham,82424/all 07/17/11 22 https://www.vitalbmx.com/community/Brayden-Buckingham,82424/setup 495 7238 267 13 7

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5/1/2013 9:02 PM

Go buy a 25.4 one? The silver one should woek.
Just tighten the f*ck outta it and that should work

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Logos

Vital BMX member Logos 105159 Logos /images/default/avatar/c50.png https://www.vitalbmx.com/community/Logos,105159/all 05/01/13 1 2

Posts: 3

Joined: 5/1/2013

Location: USA

5/1/2013 9:11 PM

Brayden_Buckingham wrote:

Go buy a 25.4 one? The silver one should woek.
Just tighten the f*ck outta it and that should work

...more

The silver one is the stock one Im replacing which fits just fine.The red one is the replacement that is a little too big.

why should I buy a 25.4mm one? that's way to small.I need a 33mm one.BUt I cant find one for sale

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tomdon

Vital BMX member tomdon 91070 tomdon https://bmx-media-bucket-photo.s3.amazonaws.com/photos/users/91070/avatar/c50_442481FCBF683345FAC307E0EF17B124E59D882A689BFC6EE3_pimgpsh_fullsize_distr_1421888027.jpg?1421887288 https://www.vitalbmx.com/community/tomdon,91070/all 02/29/12 8 https://www.vitalbmx.com/community/tomdon,91070/setup 148 5571 6 1 24

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5/1/2013 9:15 PM

specialized is weird and uses a larger diameter seat post

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BNC

Vital BMX member BNC 97074 BNC https://bmx-media-bucket-photo.s3.amazonaws.com/photos/users/97074/avatar/c50_picasso_drawing_head.jpg?1364414494 https://www.vitalbmx.com/community/BNC,97074/all 08/06/12 37 772 1

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5/1/2013 9:17 PM

Logos wrote:

The silver one is the stock one Im replacing which fits just fine.The red one is the replacement that is a little too big.

...more

...more

You could probably find one on that oldschool forum I think its called bmxmuseum.com

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