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Is this normal?

  • This topic has 7 replies, 6 voices, and was last updated 12 years ago by mbell.
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  • May 27, 2014 at 2:22 pm #21541
    tonyleatham

    Hi

    Just got a new Ribble R872 and it came fitted with RS31’s. The rear wheel has a very small gap in the rim which I can hear grating when I brake. The front wheel has no such gap, and neither do any of the other pairs of wheels I own.

    I’ve attached a photo of what I mean. I guess there maybe two problems here: the brake pads will get shredded quickly as the gap is very rough to the touch and b) the wheel is actually faulty and will collapse at some point.

    So my question is: is it normal to have a gap in a rim like this?

    Many thanks

    Tony

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  • May 27, 2014 at 9:29 pm #796277
    0
    mbell

    If it was mine I’d sent it
    If it was mine I’d sent it back to Ribble. I wouldn’t fettle it either as then you will likely invalidate any warranty.

    May 27, 2014 at 6:12 pm #796275
    0
    notfastenough

    I’m certainly no authority on
    I’m certainly no authority on such things, but wouldn’t the ‘bump’ of the pad adjusting to the different distance to the surface affect the wheel stability at speed? I’m not sure I’d fancy braking from 40mph with that.

    In addition, wouldn’t it act like a plane to shave off the pad surface (assuming the second surface is closer than the first)?

    May 27, 2014 at 5:10 pm #796273
    0
    ronin

    tonyleatham wrote:The wheel

    tonyleatham wrote:
    The wheel seems to run true even when I’m riding it (i.e. it’s under load) and the gap is very much smaller than 0.5mm. I’m more than happy to “fettle” it a bit, though I suspect doing so will remove some of the powder coating.

    I think the problem is perhaps less the gap and more the step between the two ends of the hoop. It’s not much, but enough to feel and for the brake pads to rub on.

    I emailed Ribble about it first thing this morning but so far they’ve not replied (they often take a day or so)

    I was just downstairs in the garage messing with break pads as I could hear something wasn’t quite right with my Dura Ace 9000 C35s – noise from the back wheel when breaking. I think I better go and take a closer look. Perhaps the same guy made your wheels made mine too 🙁

    May 27, 2014 at 3:18 pm #796271
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    MKultra

    If it’s only slight then the
    If it’s only slight then the step for the machined surface should let you get away with the abrasive pad or stone, if you are not too cack handed the finish should be fine.

    May 27, 2014 at 3:07 pm #796269
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    tonyleatham

    The wheel seems to run true
    The wheel seems to run true even when I’m riding it (i.e. it’s under load) and the gap is very much smaller than 0.5mm. I’m more than happy to “fettle” it a bit, though I suspect doing so will remove some of the powder coating.

    I think the problem is perhaps less the gap and more the step between the two ends of the hoop. It’s not much, but enough to feel and for the brake pads to rub on.

    I emailed Ribble about it first thing this morning but so far they’ve not replied (they often take a day or so)

    May 27, 2014 at 3:01 pm #796267
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    MKultra

    It’s normal in so far as rims
    It’s normal in so far as rims often have this fault where the pinned joint completing the hoop is not quite true. Is it an actual gap or a small step between the two sections of about half a mm or so?

    You have the choice of returning it or possibly taking an abrasive stone to it, it depends how out of true it is or if it’s an actual gap.

    May 27, 2014 at 2:58 pm #796265
    0
    glynr36

    It’s the joint, and I’d
    It’s the joint, and I’d question it if it’s that bad to rub the pads.
    Throw it back to Ribble and see what they say.

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