Viewing 14 posts - 1 through 14 (of 14 total)
  • Flat spokes pinging
  • Premier Icon molgrips
    Full Member

    I know my way around bike maintenance, I’ve trued and tightened plenty of wheels and built a few. I’ve recently got some old but not well ridden DT XC wheels (forget the model, cannot be bothered to go down to look) and the rear just recently started plinging on steep climbs as I put my awesome torque through it.

    Normally when this happens and I check it out there are some clear loose spokes, I tighten them and it’s all good. But not this time, it all appears fine. So are the very thin (0.9mm) flat blade spokes more prone to making a noise under the inevitable flex? Do they need to be tighter than traditional spokes?

    Just ordered a flat blade spoke holder and a new key to try and sort it out properly.

    Premier Icon continuity
    Free Member

    Are you suuuuuuure you aren’t touching spoke to mech or cable end?

    If spokes are tight, this is most likely.

    Premier Icon martymac
    Full Member

    Is the QR definitely tight?
    I’ve had a rear wheel move even in vertical dropouts when I’m out the saddle.

    Premier Icon molgrips
    Full Member

    Yes to both mech and cable end (first thing I checked, been there before!). It only does it under heavy load.

    QR is a through skewer, it’s a Trek.

    Premier Icon scotabroad
    Full Member

    I had this happen recently on a rear on a road bike with straight pull, flat spokes, all checked out ok, with LBS came to conclusion it was maybe due to light corrosion in/ under nipples causing stiction and when it release caused spokes to ping.  Was only on steepest of climbs/ standing on pedals etc.  I have since sold bike so no long term report

    Premier Icon scotabroad
    Full Member

    ps when I first had bike they didnt do this, and it was all checed out by LBS re spoke tension etc, did use wd on nipples and seats which helped a little but didnt cure

    Premier Icon molgrips
    Full Member

    Hmm interesting.

    I’ve done penetrant on the nipples to help truing, but I could try some oil on the rim holes, see if that helps.

    Premier Icon bigyan
    Free Member

    That are the spoke tensions?

    Premier Icon mudeverywhere
    Free Member

    I’ve got a slight pinging going on when really cranking hard. 350 hubs, XR 391 rims and CX Ray spokes. New wheel, tension feels okay by hand but not checked it properly or tried to lube anything yet. But I did swap a few bits to verify it wasn’t the cassette or the rest of the bike. Not had this before.

    Premier Icon the00
    Free Member

    I have this issue on my DT wheels. I always thought it was the straight-pull spokes moving in the hub as load is applied. They did it at new, and still do it after having been back to DT approved service centres twice, all be it for new spokes rather than because I asked about the problem.
    It happens with brake torque, weight loading, and with drive torque. It’s damn annoying, but I only notice it when stationary, so I quickly forget about it.
    I think they’re XMC1200 wheels, the old ones.

    Premier Icon sharkattack
    Free Member

    I bought an old Mavic wheel with bladed spokes for the back of my DJ bike. I know, I know but I snapped the original in half and it was the only rear wheel in the only shop.

    It was really bad for the spokes flapping against each other and making a noise so I used a hot glue gun to put a blob in all the contact points. Silence.

    Premier Icon molgrips
    Full Member

    Interesting that it’s common. I was wondering maybe if it was because of the really thin bladed spokes. It only started happening recently, and you know what, I haven’t cleaned it in a while…….

    Premier Icon Onzadog
    Free Member

    Are these bladed spokes straight pull or j-bend?

    Premier Icon molgrips
    Full Member

    Er J bend I think.

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