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  1. #1
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    First foldie owner - having problems with Dahon Curve - would love some help

    Hi All,

    Am completely new to the forums, but I'm a keen cyclist and own several bikes but i now commute with Dahon Curve D3, which i believe is 2008 model. It was bought new from CH White, but had never been ridden when I bought off my cousin last year. I ride about an hour a day right through central London, and whilst the bike does take a bit of a battering on the roads, I'm very careful with it and have maintained it well over the last year, with regular servicing at local indie bike shops, as I'm completely new to foldies.

    Unfortunately, over the last month I've noticed a massive deterioration in the bike, I've got an awful creaking coming from, what i believe, is the seatpost and a worse one from the hinge where the fold occurs. I'm also having serious issues with the front handlebar hinge - again the bit that folds. Where the lever is (sorry for all the non techy terms) it's continually coming loose and the stem very quickly starts to feel like it's coming off, after a few rides.

    Could anyone advise me on what may be the issues, the bike shops have done the usual tightening of parts and making sure they are greased but nothing fixes them and they aren't foldie specialists. Any tips would be very much appreciated, as i'm not the original owner i don't have any warranty, and it's technically too old anyway, i'd imagine.

    Thanks!

  2. #2
    New usename ThorUSA brakemeister's Avatar
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    you need to find fudge cycles, they know what to do. Seems to me that you have some adjustments to do. Its not that difficult to just tighten up the hinges ... but take care not to overdo it. A little loctite on the threads after you found the right tension will also help and is recommended.
    seatpost.... clean the seatpost with dish washing detergent... have it oil free and no muck on it. Than take the sleeve out of the frame and put a little grease between the sleeve and the frame ... A LITTLE ..lol ... than grease the camber of the quick release to make it go smooth.... adjust it and you should be good ...( if not tighten the saddle rails )

    Best Thor

  3. #3
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    Ah, the legendary Thor! thanks for the reply, I believe the bike shops have done most of this, they've certainly given it a good go. Wondering if a replacement, more up to date handle bar post might do the trick on the front as I noticed its very different on the new models.

    Thanks for the info though, I will go over the bits you've said and see if it makes a difference.

    Wasn't fudges online only though? *goes off to have a nosy*

  4. #4
    New usename ThorUSA brakemeister's Avatar
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    nah dont worry about a newer version... its just different, yours should work fine... yeah fudges do have a real store ..lol

  5. #5
    www.ocrebels.com Rick@OCRR's Avatar
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    Quote Originally Posted by [B
    Bobarella[/B];14580387] Hi All, Could anyone advise me on what may be the issues, the bike shops have done the usual tightening of parts and making sure they are greased but nothing fixes them and they aren't foldie specialists. Any tips would be very much appreciated. Thanks!
    I ride a Curve SL (also 2008) and I've had most of the issues that you describe. I agree with what Thorsten advises (well, except I don't know Fudge Cycles) and can only add that I do a fairly constant check about the bike in the areas you've noted. I commute on my Curve 16 mi. a day (plus 22 on the Metro train), so it gets miles plus folds fairly often. I've noticed (as have you, probably) that if anything is not right, you feel it in the ride right away. Here are my most oft checked bits:

    1. Steering tube @ headset hinge; this adjustment is critical, i.e. if you under-tighten the nut (8mm open end works best) the steering tube will be (and will feel!) loose. If you over-tighten it will either (a.) not close or (b.) start to fracture the little white plastic cube on the adjuster. I carry an 8mm wrench (spanner) in my pack at all times (and a spare white plastic cube thing), just in case.

    2. Quick Release lever's rotating surfaces everywhere, i.e. the handlebar to stem, the steering tube central QR, the seat post QR and the main frame hinge. I use Park grease, but whatever brand light grease works fine. That said (and done) I still have to tighten the nuts on the QR's occasionally. Again, the bike will feel "loose" when you ride if any of these QR's are even a tad loose.

    3. Front hub adjustment; You'll have to check yours to be sure, but on mine there is nothing to keep the adjustment on the front hub bearings, hence they will occasionally work a bit loose. I just finger-tighten them (there are no nuts) and clamp the wheel back in with the front hub QR. Seems to stay in adjustment for a couple of months before I have to re-tighten.

    4. Not mechanical, but if the tires (tyres) get a bit low on air, you will feel it (again) as a loose bit somewhere! I check my tire (tyre) pressure every three or four days and top them off to 85 psi. (Schwalbe Marathon Racers).

    Okay, reading over this it sounds like a lot but most of it only takes a few seconds, a few minutes at the worst and is only an "issue" if ignored and left un-done. I understand from your post that you are not a mechanic, but none of this takes any mechanical knowledge or prowess, really. Any questions?

    Oh, mine is different from yours in that it's an 8 speed (Shimano Nexus) IGH (Internal Gear Hub) but for the bits discussed above, that difference doesn't matter.

    Rick / OCRR

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