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  1. #1
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    Dahon Lock Jaw Hinges

    I notice a lot of the newer Dahon folding bikes come with Lock Jaw folding hinges. I have been unable to find a picture of these hinges. I would also like to see the folding in action. Where can I find a picture of these hinges, both static and dynamic pictures would be great.
    Any commentary on the strength and/or durability and stability of these newer Dahon hinges?
    Regards,
    PCG

  2. #2
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    Well, I guess the Dahon Lock Jaw folding hinge is a very well kept secret!
    Or, Dahon has never sold a bike with this hinge arrangment?
    PCG

  3. #3
    New usename ThorUSA brakemeister's Avatar
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    http://www.dahon.com/technology/frame/lockjaw.htm

    there is a pick and a little explanation as well

    thor
    www.thorusa.com
    Dahon : Freedom Unfolds
    Tern : all about the ride

  4. #4
    New usename ThorUSA brakemeister's Avatar
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    pick a pic
    I mean ...lol
    www.thorusa.com
    Dahon : Freedom Unfolds
    Tern : all about the ride

  5. #5
    CRM
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    I just converted my Cadenza to fixed gear. Hopefully the hinges will hold up to the extra stress. I'll post more comments after several rides (maybe some pics a little sooner).

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    Chuck
    What model year is your Cadenza?
    Does it have the newer Lock Jaw Hinges?
    I will be waiting to read your next post after your experiment.
    PCG

  7. #7
    CRM
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    It's a 2007 model. The first one with lock jaw.

    I just wrapped the drop bars that I put on it today so I'll have pics soon.

  8. #8
    Senior Member Foldable Two's Avatar
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    I just saw a picture of one on the "Crazy Guy on a Bike" website.

    They were riding full sized Dahon folders around India. You can see the picture below and the bikes on this web page:

    http://www.crazyguyonabike.com/doc/p...=Fa#pic_241655
    Attached Images Attached Images

  9. #9
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    The Dahon Lock Jaw hinges appear to be constructed of aluminum. Aluminum is quite a soft metal. I wonder how the aluminum locking surfaces will hold up with a routine of folding and unfolding. It seems to me that the soft metal will be compressed and worn away in the locking area and become less than tight after several months of use. Any first hand experience with the durability of the mating locking surfaces?
    I would hate to end up with an articulated bicycle frame. I wonder what the warranty by the manufacturer is for this frame hinge?
    PCG

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    Junior Member tiger474's Avatar
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  11. #11
    Senior Member Winfried's Avatar
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    At this point, Dahon's website only mentions the Dash D18 and the very pricey Clinch:
    DAHON Bikes:*Folding Bikes by DAHON

    Does it mean the other lockjaw-based models (Smooth Hound and Bullhead) are no longer manufactured?

  12. #12
    Senior Member Ozonation's Avatar
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    Quote Originally Posted by Winfried View Post
    At this point, Dahon's website only mentions the Dash D18 and the very pricey Clinch:
    DAHON Bikes:*Folding Bikes by DAHON

    Does it mean the other lockjaw-based models (Smooth Hound and Bullhead) are no longer manufactured?
    I believe the Smooth Hound, Bullhead, and other similar 1st or even 2nd gen lock jaw bikes are no longer available. I looked into getting one for quite a while, and had to really scour the web to even find used ones. I think the Dash D18 is the latest version of this bike format.

    I came across some of the same concerns (integrity of the lock jaw over extended use) in other forums. My impression is that the bike is first a minivelo that if you have to fold, then you can do so. But if you're folding it in and out day after day, you'd be better off with a folder that's designed expressly for folding.
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  13. #13
    Senior Member ThorUSA's Avatar
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    Quote Originally Posted by Ozonation View Post
    I believe the Smooth Hound, Bullhead, and other similar 1st or even 2nd gen lock jaw bikes are no longer available. I looked into getting one for quite a while, and had to really scour the web to even find used ones. I think the Dash D18 is the latest version of this bike format.

    I came across some of the same concerns (integrity of the lock jaw over extended use) in other forums. My impression is that the bike is first a minivelo that if you have to fold, then you can do so. But if you're folding it in and out day after day, you'd be better off with a folder that's designed expressly for folding.
    agree ....however , never heard of frame failure yet. do sell about 6 bolt kits every year ( aroud the world)
    Having fun selling Terns and Dahons for a living. My personal website is also my business website, same as my profile name, therefore no link given to follow forum rules.

  14. #14
    Senior Member Ozonation's Avatar
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    Quote Originally Posted by ThorUSA View Post
    agree ....however , never heard of frame failure yet. do sell about 6 bolt kits every year ( aroud the world)
    You're probably correct. I think what I read dealt more with issues for the bolting system, rather than the frame itself.
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  15. #15
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    Quote Originally Posted by Ozonation View Post
    I believe the Smooth Hound, Bullhead, and other similar 1st or even 2nd gen lock jaw bikes are no longer available. I looked into getting one for quite a while, and had to really scour the web to even find used ones. I think the Dash D18 is the latest version of this bike format.

    I came across some of the same concerns (integrity of the lock jaw over extended use) in other forums. My impression is that the bike is first a minivelo that if you have to fold, then you can do so. But if you're folding it in and out day after day, you'd be better off with a folder that's designed expressly for folding.
    New year-2015 Dahon Dash D18 can be found relatively easily in Malaysia. They are quite low specced out, though. New Dahon Dash P18 or XPs are out of production now, I believe. Dahon Dash Altena is available if you look for them. These are Japanese-market bikes where mini velos have more currency. I just bought a new one--well, just the frame, fork, stem and headset--in Singapore.

    Last edited by Abu Mahendra; 01-22-16 at 10:19 PM.

  16. #16
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    Bicycle hero sell them from Korea - Folding Bike - Bikes

    I like the Dash x20 - Dahon Dash X20 Folding Bike 2015

  17. #17
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    I own a Dash P18 and a Dash Altena. The Dash XP is the same frame as the Dash P18 and D18, just tricked out with road components. They are all 406 wheels. The Dahon Dash Altena has a different frame geometry, closer to a classic road bike, altogether with 451 wheels. Like so:

  18. #18
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    Quote Originally Posted by Foldable Two View Post
    I just saw a picture of one on the "Crazy Guy on a Bike" website.

    They were riding full sized Dahon folders around India. You can see the picture below and the bikes on this web page:

    South India Mini Tour: Pre-Trip Stuff: Building bikes, planning a route and gear
    That's a first gen LockJaw hinge, I believe. It's now in its third generation.

    If ungreased the hinge will creak a little. Oil it, and it goes away.

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