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  1. #1
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    Does a Carbon Fiber Seatpost for Dahon Bikes Exists ??

    hi all,

    has anyone updated their dahon seatpost with carbon fiber ? i searched and googles but couldn't find a carbon fiber seatpost with 34x600mm measurement. anyone know where to get one ? closest one is this : http://www.speedmatrixdepot.com/cata...roducts_id=198

    but still 2 inches short though.

    thanks,

  2. #2
    Senior Member bhkyte's Avatar
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    A dahon beam seatpost combi is pretty light.
    Dual drive Mezzo (GOLD), Dual Drive Mezzo with bullbars (black), White Brompton thingy with Dahon Androes stem and bull bars. Birdie (old sytle) 7 speed. Downtube NS8. Birdie red.

  3. #3
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    Quote Originally Posted by bhkyte View Post
    A dahon beam seatpost combi is pretty light.
    i checked out that one but you'll be limited to their saddle and can't use any other saddle brand.

  4. #4
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    I've heard of one report of someone receiving a partial colectomy from a carbon seatpost. Ugh!

    YMMV

  5. #5
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    Quote Originally Posted by intheways View Post
    I've heard of one report of someone receiving a partial colectomy from a carbon seatpost. Ugh!

    YMMV
    yes. i have read all these bad reviews about a broken carbon fiber. i was hoping that's my only option since i can't find a lighter alloy or alum seatpost that will fit the dahon.

  6. #6
    AEO
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    there's a possibility for using a shim or telescoping section for the dahon.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

  7. #7
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    Vic, you should know by now, just ask me.. of course Dahon carbon seatposts exist.. I have two in the shop.. are they the lightest, no, the brand new Kore that I have here is lighter.. with the cute little adapter, you can run any saddle you'd like.. also, I have the SDG I-Beam seat/seatpost combo ... lightness spoken here ..

  8. #8
    Professional Fuss-Budget Bacciagalupe's Avatar
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    IMO a CF seatpost on a folder is a terrible idea.

    Unlike aluminum or steel, CF components can only tolerate a certain amount of torque. Tighten the seatpost QR too much, and it won't be long before you'll crack the CF seatpost.

  9. #9
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    Quote Originally Posted by Bacciagalupe View Post
    IMO a CF seatpost on a folder is a terrible idea.

    Unlike aluminum or steel, CF components can only tolerate a certain amount of torque. Tighten the seatpost QR too much, and it won't be long before you'll crack the CF seatpost.
    Make sense as we normally wants the tightest possible grip to avoid seatpost slippage. Guess CF is out of the question now.

  10. #10
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    The SDG I-beam saddle, Bel Air or whatever it's called is only about 200g whereas a railed version is nearer 300g. I've got the total weight of the SDG seat post and saddle at 600g. That's way lighter than the post-pump seat post on it's own and only a few grams heavier than the standard non-pump seat post. I think the Kore I-Beam set up is a little heavier, so I'd say that if you like SDG saddles try to find that version somewhere (might be hard to get hold of).

  11. #11
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    I also found that the SDG seat post flexes in a way that I like, i.e. quite a lot. Some may hate it but I found it softened the ride. The Bel Air saddle is very flexy at the tail and again I found this very comfortable. The central region of the saddle where it joins the seat post with the I-Beam bracket is a different story - unforgivingly hard. The Formula FX saddle remedies this but isn't worth the extra price tag IMO.

  12. #12
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    Or if you want to go with Kore there's a rail adapter for railed saddles. Dunno how much weight it adds/whether it undermines the benefit of the seat post.

  13. #13
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    Quote Originally Posted by chagzuki View Post
    Or if you want to go with Kore there's a rail adapter for railed saddles. Dunno how much weight it adds/whether it undermines the benefit of the seat post.
    that's the only drawback this the KORE. you can't use a regular saddle unless you have the adapter. i wonder what they we're thinking when they built this special seatpost. wrong marketing strategy.

  14. #14
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    Do you have it already or do you mean it's the only I-Beam product available in stores?

  15. #15
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    Quote Originally Posted by chagzuki View Post
    Do you have it already or do you mean it's the only I-Beam product available in stores?
    i meant the I-Beam Kore seatpost. http://us.dahon.com/node/89

  16. #16
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    Yeah, but I'd think SDG versions must crop up on ebay fairly regularly, or there might be someone on these forums who has one to sell / exchange.

  17. #17
    jur
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    Quote Originally Posted by vmaniqui View Post
    hi all,

    has anyone updated their dahon seatpost with carbon fiber ? i searched and googles but couldn't find a carbon fiber seatpost with 34x600mm measurement. anyone know where to get one ? closest one is this : http://www.speedmatrixdepot.com/cata...roducts_id=198

    but still 2 inches short though.

    thanks,
    I have that one on my Swift.
    My folding bike photo essays www.dekter.net/

  18. #18
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    Quote Originally Posted by jur View Post
    I have that one on my Swift.
    Hi Jur, how did you build your rear wheel? Do you have any closeup shots? 28h rim?

  19. #19
    transport, not sport.
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    Quote Originally Posted by vmaniqui View Post
    that's the only drawback this the KORE. you can't use a regular saddle unless you have the adapter. i wonder what they we're thinking when they built this special seatpost. wrong marketing strategy.
    available here in jakarta. around 50 bucks. adapter INCLUDED.

  20. #20
    transport, not sport.
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    @ jur: is that pazzaz? some friends here have that. 34mm. not sure about the length. maybe not 600mm

  21. #21
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    Quote Originally Posted by tedi k wardhana View Post
    @ jur: is that pazzaz? some friends here have that. 34mm. not sure about the length. maybe not 600mm
    it is a pazazz and in 400mm length only.

  22. #22
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    i found these online - a titanium seatpost for birdy and dahon ????

    http://wworks.pixnet.net/blog/post/26664038

  23. #23
    jur
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    Quote Originally Posted by BruceMetras View Post
    Hi Jur, how did you build your rear wheel? Do you have any closeup shots? 28h rim?
    It's a simple enough build; 28H American Classic 205 hub & Sun Ringle Assault SL rim, 21 spokes laced, every second one on non-drive not laced. Non-drive side radial, drive side 2-cross. I have done about 3-400km on it now and am pleased with the result.

    Tedi: Yes that is the 34mm Pazzazz seatpost. I got it from Speedmatrixdepot. I use it in conjunction with some Ritchey Liquid Torque anti-slip grease which is necessary.
    My folding bike photo essays www.dekter.net/

  24. #24
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    Dahon did make a CF post for the Helios XX anniversary model that used a standard seat mount. Probably rare as hen's teeth now. Wonder if Thor has one rattling about the barn.

  25. #25
    coprolite fietsbob's Avatar
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    a source of carbon fiber tube, sheet, plate, etc.. http://dragonplate.com/default.asp.. for your own projects.

    carbon lined aluminum tube, with a conventional seatpost, sleeved in the top, presents an Option..
    Last edited by fietsbob; 10-17-10 at 11:43 AM.

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