Stem Question

canada16
canada16 Posts: 2,360
edited November 2008 in MTB buying advice
Hey

Now that I have bought a Ritchey low riser carbon WCS bar,, skint.

Looking at changing the stem as mine is fsa standard and weighs a ton.

Anyway, are they all standard sizes around the headet?

I assume they are cause everywere I look they all say the same size, just need to double check just in case, and it does not say on the one I have.

Thanks

Comments

  • nicklouse
    nicklouse Posts: 50,673
    there are different size steerers and bars.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • canada16
    canada16 Posts: 2,360
    Got the bars no probs as stem says 31.8mm

    But everywere I look it says 1. 1/8 stem .

    Can really find any different sizes on that front

    Seen a race face xc stem but it says in brackets (OE) what does this mean ?
  • RussAlf
    RussAlf Posts: 706
    1 1/8 is the diameter of the tube the stem clasps onto from the fork. Yes pretty much 1 1/8 is the standard size unless you have a DH or Beefy bike when they can be 1.5 inch.

    31.8mm is the diameter of the handle bars if they are oversize.
  • canada16
    canada16 Posts: 2,360
    Thanks

    So the bit that clamps around the Headset is all the same size then?

    My bike is only a xc bike.

    Going to get a bit longer one as mine is only 90mm which I want about 100 - 110 as my bike was a tiny bit small as could not pass up the deal, so need to make the reach a bit longer,

    Just worries about the clamp at the back of the stem.

    Thanks again
  • RussAlf
    RussAlf Posts: 706
    Remeber a longer stem will make the steering slower, ive got a 70mm on mine as i like it quick for the tight singletrack.

    How about a layback seatpost instead to lenghten the cockpit?
  • canada16
    canada16 Posts: 2,360
    I was probably going to go max 100mm

    I am just trying to firgure out the size of my steering tube.

    I hope its not some abnormal shape that can only be found in outer mongolia :lol:
  • What bike do you ride? What fork is it?
    Boardman Road Comp '08
    Spesh FSR XC Expert '08
  • Your steerer tube is definitely 1 1/8, as it is only DH and FR bikes that use forks with 1.5" steerer tubes at the moment. It will clearly say whether it is 1 1/8 or 1.5". As Russ said, i would definitely try a layback seat-post over a longer stem, as a longer one will wreck the handling imho, and on steep descents you will feel too far over the front end.
  • I`d also say look at the layback option first.Have a look at the difference between the centre line of you existing post,and where the saddle clamps on.
    You can prbably gain 10mm or more here easily.In =fact some layback options can give you 25mm.
    Then buy the WCS stem to match your bars in the same size as you have now.
    2006 Giant XTC
    2010 Giant Defy Advanced
    2016 Boardman Pro 29er
    2016 Pinnacle Lithium 4
    2017 Canondale Supersix Evo
  • canada16
    canada16 Posts: 2,360
    Thanks for that guys

    I am on a focus superbud with fox f32 rl 100mm

    My stem is 90mm right now, so surley 10mm wont make much of a difference would it?

    If a seatpost would be better which one should I look at? the thompson maybe, or is there another one.

    Thanks again guys
  • canada16
    canada16 Posts: 2,360
    How many time have you got to press submit before it registers? :lol:

    Multiple posts
  • RussAlf
    RussAlf Posts: 706
    You will definatley feel the difference between 90mm and 110mm, steering will be slower and as andy says your weight will be more over the front, great for climbing but bad for descents.

    Down to personal preference really but most people prefer a shorter stem.

    Thompson do great layback posts.
  • supersonic
    supersonic Posts: 82,708
    Layback posts can work very well, but if you are already a long way behind the BB - ie a slack seat angle - they can make it worse. Combined with a short stem the front end can feel vague when cornering due to lack of weight on it.
  • The best thing to do is to hunt around for some dirt cheap stems and seat post's and just try them out before spending loads on a decent one. I went through about 6 different stems before finally finding the right size and rise, and i have only just found the ideal riding position after about 8 months with this frame! How high is your stem currently? You could try lowering it as far as it goes and see if that helps.
  • canada16
    canada16 Posts: 2,360
    Thanks for that guys.

    I have no trouble riding now, but I know its a tiny tiny to small.

    Maybe 100mm at most as mine is 90mm right now, im sure that will not make a huge difference would it?

    As far as my seat, its up quite high about 3/4 to the end.

    I see what you mean about cornering and weight ratio to the end and front, dont want to be messing around with that too much do I, Or I could go flying

    Thanks again guys for the help