Explain bash rings to me.

Spidey
Spidey Posts: 7
edited March 2009 in MTB workshop & tech
I'm off to the Alps for some downhill trailriding in July.

I'm currently running a hone 3 ring up front.

What size bash ring do I need for this?

Comments

  • what size is your biggest ring?

    From what I understand, you need a bash a bit bigger than your biggest ring to ensure it protects the chainring and chain.

    ie, I have a 36T chainring, and want a 36-40T bash :)
  • Spidey
    Spidey Posts: 7
    44T i believe?
  • cee
    cee Posts: 4,553
    blackspire do one called the big ring thing.....or something like that.
    Whenever I see an adult on a bicycle, I believe in the future of the human race.

    H.G. Wells.
  • ride_whenever
    ride_whenever Posts: 13,279
    Whilst you can get bash guards for triple setups, you'll be better off fitting double+bash as there are more options. Say fit a 36 or 38 middle ring and a slightly larger granny with a bashguard.
  • hucking_fell
    hucking_fell Posts: 1,056
    A 32T bashring will protect up to a 32T middle ring.
    A 36T bashring will protect up to a 36T middle ring.
    A 40T bashring will protect up to a 40T middle ring.
    etc.

    On my Bighit the FSA 36T bashring is still slightly bigger than the 38T chainring and as such it works fine as part of the chainguide. It does not offer as much protection from 'bashes' that are not square on but from the non drive side though.

    If you continue to use the 32T middle ring then a 36T bashring would work fine and give you the option to change up to a 36T middle ring later if you want.

    Have you considered using a lower roller guide with the double and bash set up?

    Pic of double and bash on 5 AM (26T, 36T, 36T bash) with lower roller guide:
    PICChainset-1.jpg
    More freerange chicken than Freeride God
    Bighit , 5 , BFe
  • dave_hill
    dave_hill Posts: 3,877
    Spidey wrote:
    I'm off to the Alps for some downhill trailriding in July.

    I'm currently running a hone 3 ring up front.

    What size bash ring do I need for this?

    1. Get rid of your outer ring.

    2. Fit a 34T or 36T middle ring.

    3. Fit a bash guard instead of the outer ring.
    Give a home to a retired Greyhound. Tia Greyhound Rescue
    Help for Heroes
    JayPic
  • Spidey
    Spidey Posts: 7
    1. Get rid of your outer ring.

    2. Fit a 34T or 36T middle ring.

    3. Fit a bash guard instead of the outer ring.

    That sounds right . . . and cheap!

    Cheers

    Keith
  • passout
    passout Posts: 4,425
    I'd keep your 'big ring' and pretend it's a bash guard. You may loose a few teeth off it, but so what? You'll save even more money!
    'Happiness serves hardly any other purpose than to make unhappiness possible' Marcel Proust.
  • Zeroman_IR
    Zeroman_IR Posts: 290
    Just a quick question. Is a 36T bashring bigger than a 36T chainring? Or would you need to pick a 38-40T bashring to protect it?
  • snotty badger
    snotty badger Posts: 1,593
    A 36T bashring will protect a 36T chainring.

    You could get a size up in case you decide to go for a bigger chain ring in the future but if you don't you'll have lost a few mm clearence for no reason.
    08 Pitch Pro
    14 Kona Unit
    Kona Kula SS
    Trailstar SS
    94 Univega Alpina 5.3