Front Forks Loose

polopaul69
polopaul69 Posts: 5
edited December 2007 in MTB workshop & tech
I wonder if anyone can help.

After a very quick emergency stop the other day, every time i go over a bump, apply the front brakes or mount a curb, there is a large clunk in the front forks of my old Scott Voltage. I had a quick inspection and it seems that the forks are moving inside the stem. I checked that the stem was tight enough but they just seem to move inside causing the clunking noise.

Is there any easy way to fix this movement as it is very worrying that they might just snap off or something and i use the bike to get to work each day.

Many thanks in advance

Comments

  • Go to the parks tools website and have a look at the section on the headset, then basically strip it all down and re-assemble. It is relatively easy especially if you keep the parts in the right order and the right way round. Fixes most things.
  • Pubert
    Pubert Posts: 89
    yeah do what was said above, often re-assembling things sorts out the problem.
    DMR Sidekick ;)
  • I've already looked on Park tools and couldn't find what it was i was looking for. I've stripped it down and reassembled and can't see where the fault is.

    .Is it dangerous or not to continue using the bike till after christmas as i am buying a new one in the new year.
  • nicklouse
    nicklouse Posts: 50,673
    http://www.parktool.com/repair/readhowto.asp?id=65

    get is sorted before riding it again.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Just had another look and yes the front forks are fucked as the suspension has seized in them but the bearings are a little rusty so lubed them up and rreattached, there was a second clunck this time. Tightened everything back up and now the clunk is not present - will go for a ride later to see if it has worked. Wasn't planning on chaning forks are bike is 6 yrs old now and has taken a bit of a beating in the past n probably cheaper to salvage parts that are new and buy new bike or pass this one on to a friend or something to fix and tinker with.

    Will it will be ok to ride on?
  • supersonic
    supersonic Posts: 82,708
    The headset is preloaded correctly?

    The fork wasnt good to start with, so if it still even moves at this age its a bonus!
  • Well it kinda moves if i put my foot on the wheel and push hard and then bounce it for about 10 minutes - then it seizes up again. A friend of mine has some new shocks he doesn't want with his new bike as got upgrades so i might chuck those on it (dep on size n stuff).

    Headset preloaded ????? No idea - i just took it apart, lubed up the stem and bearings and put it back together - no rust (bonus) and it seems to have done the trick.
  • supersonic
    supersonic Posts: 82,708
    "Headset preloaded ????? No idea - i just took it apart, lubed up the stem and bearings and put it back together - no rust (bonus) and it seems to have done the trick."

    Sounds like you got lucky! The top cap loads and adjust the bearings, essential to stop the fork moving in the headtube. Then the stem clamps it all in place. The link Nick posted tells you how to do this (near the bottom)