biggest fork for gt avalanche?

scotto
scotto Posts: 381
edited November 2009 in MTB workshop & tech
Thinking of doing up my 05 gt avalanche disc 1

Current forks are rubbish, whats the biggest fork I can put on there and any suggestions please?

budget for that is circa £250.00

Comments

  • supersonic
    supersonic Posts: 82,708
    100mm on the older frames. Get very slack with much more.

    For XC riding the Reba fits the bill nicely.
  • scotto
    scotto Posts: 381
    hmm that's a gutter, already got a good 100mm setup on the cannondale, kind of wanted to have a long travel hardtail for winter adventures.

    Maybe I should sell it and buy an orange crush.

    Thanks for the reply will have a look at the rebas.
  • supersonic
    supersonic Posts: 82,708
    You could fit longer - but do you like a slack head angle?
  • scotto
    scotto Posts: 381
    I don't understand what a slack head angle is? :-)
  • supersonic
    supersonic Posts: 82,708
    Lol. Head angle is the angle the headtube makes with a horizontal line. On most bikes it is between 67 and 71 degrees, with DH bikes having slacker (less) angle.

    geobike%20(391%20x%20269)%20(600%20x%20390).jpg

    So if you put a longer fork on your bike, you slacken (decrease) this angle which makes the bike more stable, but harder to turn. It also does the same to the seat angle (using the seat tube) so your weight is tipped back. Bottom bracket height, front centre and wheel base change too.

    The upshot is that on bikes designed around less travel having a longer fork can make them feel too relaxed, or sluggish handling. But it can improve matters when going downhill.

    Uturn forks you can change the travel and therefore angles. This might be a good option actually say a 85-130mm travel Tora or Recon.
  • scotto
    scotto Posts: 381
    I see, thanks for explaining that.

    Think I prefer a more aggressive stance however the idea is I try and be a bit more adventurous so this could be a really good thing, maybe !

    May make it look like a chopper !

    will have to have a think.
  • mrfmilo
    mrfmilo Posts: 2,250
    As sonic says depends of the model.
    I run a U-Turn fork usually at 130mm on my Avalanche 2008:

    3962149665_6c6495493a.jpg
  • scotto
    scotto Posts: 381
    That looks nice, had a look at mine last night, not so sure I want to go big fork now, there's going to be a whole lot of lean if i do, will probably go for the reba now I think.
  • mrfmilo
    mrfmilo Posts: 2,250
    I would personally go for a U-turn fork. It's handy because I can wind it down for the fast tight singletrack and XC, and wind it up for more downhilly sections.
  • scotto
    scotto Posts: 381
    mrfmilo wrote:
    I would personally go for a U-turn fork. It's handy because I can wind it down for the fast tight singletrack and XC, and wind it up for more downhilly sections.
    hmm, will get a photo up of itr and see what you lot think once you have seen the frame angle.