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PostPosted: Fri May 17, 2013 12:05 pm 
Retro Guru

Joined: Mon Jun 06, 2011 12:28 pm
Posts: 283
Location: Bexley
If my bike takes a 26.6mm seatpost will I need a 28.6mm clamp? I ask this question as clamps only seem to come in 3 regular sizes of which 28.6mm is the smallest. The bike btw is a Parkpre Comp Limited........


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PostPosted: Fri May 17, 2013 12:47 pm 
retrobike rider
retrobike rider

Joined: Thu Apr 17, 2008 1:24 am
Posts: 7563
Location: Manchester
Probably but worth checking.


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PostPosted: Fri May 17, 2013 12:52 pm 
Gold Trader
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Joined: Fri Aug 20, 2010 11:28 am
Posts: 5650
Location: Gorleston-on-sea (If there is a bright center to the universe this is place furthest from it
Shimano front mech :?: If so undo the clamp and look inside it will give you the clamp size of the mech unless the tube is bulged or tapered it should tell you the seat clamp size :wink: :D


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PostPosted: Fri May 17, 2013 1:14 pm 
retrobike rider
retrobike rider

Joined: Thu Apr 17, 2008 1:24 am
Posts: 7563
Location: Manchester
Good idea! :)

Steerer tubes are also 28.6.


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PostPosted: Fri May 17, 2013 1:17 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Thu Feb 24, 2011 1:15 am
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Location: Getting fitter, I will beat the Surrey Hills....
My Saracen takes a 27.2 post, a 28.6 front mech but a 30.0 clamp so its not always obvious if there is a tapered tube, I certainly couldnt tell when I ordered a 28.6 seat clamp... :roll:


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PostPosted: Fri May 17, 2013 1:20 pm 
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Same as Kona's then why oh why can't manufacturers make things bl00dy simple :twisted:


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PostPosted: Fri May 17, 2013 1:44 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Thu Feb 24, 2011 1:15 am
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Location: Getting fitter, I will beat the Surrey Hills....
I know, its annoying! Though in fairness I think it is down to the tubes they use rather than them being difficult. For reference, my saracen is an 853 frame, which may have different dimensions in terms of tube thinkness to say a 501 frame etc, and then you still have to take into account any butting which I am told can be external. Not sure how much truth is in that though - I am ready to learn otherwise.


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