Chainset comparison

grubby
grubby Posts: 214
edited February 2010 in MTB workshop & tech
Hello,
Can anyone help with a comparison from Truvativ to Shimano.
What is the Truvativ Firex 3.3 GXP chainset and BB compared to within Shimano? Deore/SLX/XT?
Thanks.

Comments

  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Just compare the relevant prices for an idea.
  • bails87
    bails87 Posts: 12,998
    I'd look at weight as the main indicator with chainsets. There won't be a huge performance difference between them. So how much does it weigh compared to the Shimano ones?
    MTB/CX

    "As I said last time, it won't happen again."
  • ride_whenever
    ride_whenever Posts: 13,279
    Miles below, none of the truvative bb setups work very well IME.

    The shimano system just works so much better because of the pinch bolts.
    Neeermad
    Carbon 456
    456 lefty
    Pompino
    White Inbred
  • bails87
    bails87 Posts: 12,998
    ride_whenever
    How do you mean?
    MTB/CX

    "As I said last time, it won't happen again."
  • ride_whenever
    ride_whenever Posts: 13,279
    Also weight isn't a good indicator without intended use. SAINT is relatively heavy (I assume, not actually checked this), but it is also super-strong. The firex is a fairly basic crank, in intent terms it is on par with deore, but doesn't perform as well.
    Neeermad
    Carbon 456
    456 lefty
    Pompino
    White Inbred
  • ride_whenever
    ride_whenever Posts: 13,279
    Sorry, basically they just have the end-cap. So there is not really any pre-loading of the system, you have one bit holding the LH arm on and loading the bearings.

    The shimano system, you have the same cap that pre-loads the bearings to take any play out, accounting for small differences in the bb width after facing, and then two opposed pinch bolts that actually do the crank arm holding on. It's the only system where I haven't written off the LH crank as I ride left foot forward and ss i tend to go through them far faster than more sensible cyclists apparently.

    So in other-words, any of the shimano cranks would be a step up IMHO, SLX is the sweet-spot for price/performance.
    Neeermad
    Carbon 456
    456 lefty
    Pompino
    White Inbred
  • bails87
    bails87 Posts: 12,998
    ride_whenever
    I've got a Truvativ Stylo chainset on my bike, came as standard. There doesn't seem to be anything wrong with it apart from the sealing of the bearings, which isn't great.

    I think on strength terms they're comparable with any other standard chainset, e.g Deore/SLX/XT, but not things like Saint which are aimed at the harder hitting side of things.

    I think the single bolt system is simpler, and I've not had any issues as a result of it, don't know what other people's experiences are though.

    If I was buying a replacement I'd get something by Shimano I think. But I wouldn't say that the Firex is fundamentally flawed in any way.
    MTB/CX

    "As I said last time, it won't happen again."

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