any downside to extended seatpost if you don't need it?

Discussion in 'Folding Bikes' started by Mrklaw, 28 Aug 2018.

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  1. Mrklaw

    Mrklaw Active Member

    The bike (Brompton) I'm picking up today has an extended seat post - didn't spot it in the description, and it was on the website under the normal 'M6L' button so I wasn't looking for it.

    Any particular downsides? I can't use the standard post fully extended anyway, so I have to find and mark the correct position. Does it affect how easy it is to carry?

    I suppose worst case I could swap it out - think its only about £30 for a replacement black edition post and do they swap out easily?



    (edited to add in the name of the bike..)
     
    Last edited: 28 Aug 2018
  2. What’s the bike?
     
  3. Reiver

    Reiver Guest

    I guess the main downside will be, if your seat post is too long you wont be able to reach the pedals
     
  4. OP
    OP
    Mrklaw

    Mrklaw Active Member

    sorry - Brompton.
     
  5. KneesUp

    KneesUp Veteran

    The longer post will add weight too. Not sure if that will bother you though.
     
  6. OP
    OP
    Mrklaw

    Mrklaw Active Member

    sounds not enough of an issue to stop me picking it up. And if it gets on my wick I should be able to pass it on to someone that wants an extended one in black.
     
    Dogtrousers likes this.
  7. OP
    OP
    Mrklaw

    Mrklaw Active Member

    ok - it doesn't fit under my desk at work. Dealbreaker :P
     
  8. Nibor

    Nibor Bewildered

    Location:
    Accrington
    It won't make it that tall
     
  9. OP
    OP
    Mrklaw

    Mrklaw Active Member

    well it does :P I reckon I'm 3-4cm too high with the seat post down. Anyway have ordered a standard one from brilliant bikes, should be here this week hopefully. Anyone want a nice shiny black extended seat post? CBA to post it though :biggrin:
     
  10. Nibor

    Nibor Bewildered

    Location:
    Accrington
    Might be worth looking at the seat height setting thing when you replace it as you need the post out to do it. I am lucky the extended post is exactly the right length
     
  11. rogerzilla

    rogerzilla Guru

    Main one is that it doesn't achieve the claimed folded size. On the upside, a small blinky lamp high up the seatpost won't need removal for folding.

    Most men need (or should have) the extended post. It gives a max saddle height of about 31" from the BB centre. Unless you're quite short, your saddle is likely to be too low on the standard post.
     
  12. OP
    OP
    Mrklaw

    Mrklaw Active Member

    I might need to double check how I'm sitting then. I'm 5'11" and the seat on the rental brompton I had was definitely too high. Although I think that was a telescopic, and I don't know the 'untelescoped' length to compare.
     
  13. Nibor

    Nibor Bewildered

    Location:
    Accrington
    I am 6' and 31" inside leg and it fits me perfectly at full extension (the long one)
     
  14. rogerzilla

    rogerzilla Guru

    I'm 5'10" and 32" inside leg and I need the extended post all the way up (Ti extended post, which is fractionally shorter than the steel extended post). My saddle height is between 30.25" and 30.5" depending on crank length.

    Yes, telescopic posts are longer than extended posts.
     
  15. OP
    OP
    Mrklaw

    Mrklaw Active Member

    Had a look at Brompton junction and their extended seat post seems to collapse lower than mine - not with my bike but there was about 6” between the top of the tube and the bottom of the seat on mine, and much less on theirs. Will measure tomorrow but theirs was 66cm from floor to top of seat
     
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