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  1. #1
    Each Drop of Sweat Counts
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    Outer Chain guard on Speed P8 fell off

    Was riding my Speed P8 for errand work and next thing I know the chain falls off on a normal shift and the plastic outer chain guard fell the heck off the bike. Every one of the 5 securing points broke. Visual inspection revealed that two of the screws were missing and a couple more loose.

    Check your chainring guards on yer dahons.

    Took mine to the shop where I bought it and they said it'd be good to go in a week and they'd go over the whole bike. I'm traveling for a week or so, so that is perfect. Besides, it's not like I don't have other bikes to ride.

    John

  2. #2
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    Is this the same Speed P8 where a whole lot of other bolts were loose as well?

  3. #3
    Each Drop of Sweat Counts
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    No, that was my Mu P8 I bought at the sporting goods store.

    John

  4. #4
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    Ahh, ok, thanks for the heads up. I guess its not a bad idea to check all the bolts every once in a while

  5. #5
    AEO
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    meh, it's not really necessary. all it does is protect your pants.

    I haven't had the chain jump in quite a while, in fact, when it did jump off the chainring I couldn't get it to jump back on without lifting it with a stick.
    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

  6. #6
    Each Drop of Sweat Counts
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    After it fell off I was 5 or 6 miles from home. I had several chain drops to the outside in that distance. That's why they have that inner guard as well.

    John

  7. #7
    jur
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    Quote Originally Posted by AEO View Post
    meh, it's not really necessary. all it does is protect your pants.
    Wrong - chain guard is absolutely necessary to prevent chain drop. Especially as the chain wears. Yours sounds like it doesn't have a derailer - right? In that case no biggie. With derailer - don't leave home without one.

  8. #8
    AEO
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    RD or FD?

    with FD there's no need.
    with RD only in a 1x# setup, not especially necessary.
    folders have a tight chainline, yes, but really not that necessary if you use a flexible 8/9/10sp chain.

    just keep the chain within 12-1/16", at the correct length (big big +2links) and it's very unlikely to fall off.
    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

  9. #9
    Senior Member stevegor's Avatar
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    Quote Originally Posted by AEO View Post
    meh, it's not really necessary. all it does is protect your pants.

    I haven't had the chain jump in quite a while, in fact, when it did jump off the chainring I couldn't get it to jump back on without lifting it with a stick.
    That wasn't like Basil Fawlty hitting his car with a big stick because it wouldn't start?

    "RIGHT, I warned you about this, you're going to get what's coming to you!!"
    Last edited by stevegor; 06-10-09 at 06:20 PM. Reason: Add

  10. #10
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    Quote Originally Posted by TrekJapan View Post
    Was riding my Speed P8 for errand work and next thing I know the chain falls off on a normal shift and the plastic outer chain guard fell the heck off the bike. Every one of the 5 securing points broke. Visual inspection revealed that two of the screws were missing and a couple more loose.
    Exactly the same thing happened to me. IMHO it's crazy how flimsy that plastic ring is. And my chain has fallen out a couple of times in 6 km since then.

    Looking on the Dahon forum, it's not an uncommon question to ask for replacements, usually with unsatisfactory answers.

    My Dahon dealer will be selling me one for AUD$10, which is cool, but I'm afraid it will break again. My other LBSes did not know where to get replacements.

    Am I right to assume that the chain guard is required to avoid the chain falling off? Or is it there to protect my pants from chain oil?

  11. #11
    low and laid back atom bomb's Avatar
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    My chain guard broke off my Speed P8 also. Inquired with Thor about replacement, and he may have some coming in soon. No FD but even so my chain dropped within a few miles after riding without the guard. In higher gears the chain deflects to the outside quite a bit. I think the ring is necessary.
    Atom Bomb

  12. #12
    Senior Member
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    FWIW, my 2004 Speed P8 has alloy inside and outside chain guards. I bought the bike used, but I believe the chain guards are original equipment.

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