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38 chainring for truvativ firex

aya604aya604 Posts: 67
edited September 2010 in MTB workshop & tech
hi
have been let down bigtime by my lbs in parts orderfor my 2007 marin point reyes
i need to replace the middle chainring (38 ) of a truvativ firex chainset (28 38 48 )
also need a shimano cassette 12-25 and 9 speed shimano chain (or compatible)

Q1 - can anyone please tell me an online supplier of the chainrings I need?
Q2 - is there any cost/quality advantage from a different manufacturer (from
truvativ/shimano)?

many thanks
aya

Posts

  • cooldadcooldad Posts: 32,599
    Ebay and Google are your friends. Obviously capitals and punctuation aren't.

    Whats with the smiley face numbers? I'm obviously out of the loop.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • cooldadcooldad Posts: 32,599
    ps Truvativ is Sram not Shimano.

    And in answer to Q2 - yes, do you want cheap, light or good? Pick two.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • cooldad wrote:
    Ebay and Google are your friends. Obviously capitals and punctuation aren't.

    Whats with the smiley face numbers? I'm obviously out of the loop.

    thank you for your reply

    I tried google "38 chainring truvativ firex" and quite a lot of other similar things.
    I am concerned I will get a chainring that will not fit.
    I thought I may find someone who was not just going to tell me to google it.

    your comments on puncuation and capitals are noted.

    dont know why numbers come out as smiley - i am looking for a 38 chainring.
    the triple is 28/38/48

    cheers
  • cooldad wrote:
    ps Truvativ is Sram not Shimano.

    And in answer to Q2 - yes, do you want cheap, light or good? Pick two.

    thanks

    i did know that truvativ was not shimano. the bike has shimano shifters and derailers though.
    i dont know tbh what make the chain and cassette are (or the replacements need to be).

    what I want is similar or better quality to what I have now but at the best value (chains & cassettes)

    cheers
  • cooldadcooldad Posts: 32,599
    Sarky comments suspended.

    As a rule more expensive = lighter, but may wear quicker. Sometimes more expensive = tougher but heavier. Sometimes very expensive = tough and light.
    Cassette - any Shimano or Sram 9 speed will fit.
    Hybrid cassette - no 15 (downhill) in link below about the closest but not cheap.

    http://www.chainreactioncycles.com/Cate ... goryID=572

    Yours is a hybrid chainset so mountain bike ones are generally smaller but hunt and you might find - I don't know

    http://www.chainreactioncycles.com/Cate ... goryID=575

    http://www.wiggle.co.uk/c/cycle/7/Chainrings/

    You need a PCD/BCD: 104 (large and middle) 64 (small ring).

    Any 9 speed chain will fit. I use cheapest KMC available and change when stuffed. But others will swear by Sram or Simano - gold blingy ones normally.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • cooldad wrote:
    Sarky comments suspended.

    As a rule more expensive = lighter, but may wear quicker. Sometimes more expensive = tougher but heavier. Sometimes very expensive = tough and light.
    Cassette - any Shimano or Sram 9 speed will fit.
    Hybrid cassette - no 15 (downhill) in link below about the closest but not cheap.

    http://www.chainreactioncycles.com/Cate ... goryID=572

    Yours is a hybrid chainset so mountain bike ones are generally smaller but hunt and you might find - I don't know

    http://www.chainreactioncycles.com/Cate ... goryID=575

    http://www.wiggle.co.uk/c/cycle/7/Chainrings/

    You need a PCD/BCD: 104 (large and middle) 64 (small ring).

    Any 9 speed chain will fit. I use cheapest KMC available and change when stuffed. But others will swear by Sram or Simano - gold blingy ones normally.

    OK many thanks for your help.
    that will surely help me find what i am looking for hopefully
    if and when I find i will let you know

    sarky comments are no problem at all (so long as you are helping!)

    thanks again
    cheers
  • Shimano Deore chain rings will fit.
  • nicklousenicklouse Posts: 50,675 Lives Here
    any 104BCD 4 bolt ring will fit or can be made to fit, the shoulders are differing diameters on either side and it changes with year and makers. so buy a file as well.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • ROCHAROCHA Posts: 266
    I recently bought a 36t 104BCD 4 bolt steel ring, shimano's cheapest for 10euros-7quid, I guess :) 38t were also available for the same price.
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