Replacement 34mm Seatclamp?

renko
renko Posts: 61
edited November 2008 in MTB buying advice
I've seen the following guidelines for seatclamps and was wondering id this is generally true?

28,6 mm (for seat tube from 27,0 - 28,6 mm diameter)
31,8 mm (for seat tube from 30,2 - 31,8 mm diameter)
34,9 mm (for seat tube from 33,3 - 34,9 mm diameter)

i.e. if I was looking at a Hope seatclamp to suit a 27.2mm seatube, I'd need the 28.6mm version.

Can some kind soul confirm this please?

Cheers
D

Comments

  • ratty2k
    ratty2k Posts: 3,872
    Steel or Ally frame? For example:

    One One 456 27.2 seatpost, 30mm clamp
    One one ScandAL (26" or 29") 27.2 seatpost, 31.8 clamp.

    You need to measure the frame to get the correct one.
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  • canada16
    canada16 Posts: 2,360
    I have a 31.6 and need a 34mm clamp.

    just measure very carefull from top tube with a clothes tape I find best and then just look at the points very carefully.
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  • supersonic
    supersonic Posts: 82,708
    renko wrote:
    I've seen the following guidelines for seatclamps and was wondering id this is generally true?

    28,6 mm (for seat tube from 27,0 - 28,6 mm diameter)
    31,8 mm (for seat tube from 30,2 - 31,8 mm diameter)
    34,9 mm (for seat tube from 33,3 - 34,9 mm diameter)

    i.e. if I was looking at a Hope seatclamp to suit a 27.2mm seatube, I'd need the 28.6mm version.

    Can some kind soul confirm this please?

    Cheers
    D

    Unfortunately not. 28.6mm is for a 28.6mm tube, and so on. Don't confuse with the seat post though - the seatube is often 3-4mm wider, but again, only a rough correlation.
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  • renko
    renko Posts: 61
    Aha, the secret unraveled;-)

    Cheers fellas - will give it a go...

    D

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