whats what.

rake
rake Posts: 3,204
edited August 2010 in MTB buying advice
ive strayed across from the road section and need some buying help,go easy on me :? . i have an diamond back m05 which i use for a charity ride. i run out of gears down hill with 42-14 top. im putting on a new rear hub but dont know how many speeds to go and what works with what. the current setup is 7 speed with shimano tourney derailer and sram max grip shift. the problem i have is when its muddy and wet i can't grip the shifter to change gear, so an looking at trigger shifters sram 8 speed. are they like road stuff and only work with sram rear mechs? or will the tourney 7 speed mech work. the other thing is fitting the mech, the frame has no built in hanger and seeems to have a plate hung from the axle, could an sram mech be fitted? i want a 12 t top gear if thats a normal mtb size. im on a second hand budget as well. any suggestions?

Comments

  • supersonic
    supersonic Posts: 82,708
    Are you getting a new rear hub, wheel, both, or cassette? Do you have a freewheel or cassette?
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • rake
    rake Posts: 3,204
    supersonic wrote:
    Are you getting a new rear hub, wheel, both, or cassette? Do you have a freewheel or cassette?
    im lacing a new deore 8/9 speed rear hub into the wheel (crosser rim) because it currently has a solid axle with 7 speed freewheel, which as you probably know ive found it to bend seemingly from the pull of the chain. so the doere freehub should sort that with its wider bearing spacing. so i will be needing a new cassette to fit it. the question is how much fuss and expense is it to have 8 maybe 9 gears, its hanging a better mech thats got me. could i keep the 7 speed chain on an 8 speed cassette (shimano). would the tourney mech work on 8 speed with a shimano trigger shift. thanks for the reply.
  • supersonic
    supersonic Posts: 82,708
    Your mech will work with anything. Your cassette must match the shifter for speed. 6,7,8, speed chains are all just about the same. 9 is different.
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • rake
    rake Posts: 3,204
    thanks. im confused as to which sram shifters work with shimano mechs as non of the road stuff does so. is it just old gripshift like mine.
  • Andy B
    Andy B Posts: 8,115
    Named Sram shifters (Attack & Rocket) work with Shimano rear mechs only

    Numbered Sram shifters (SX4,5.. & X5,7,9,0) work with Sram rear mechs only

    Any front shifter works with any front mech.

    So to work with a Tourney rear mech you'd have to use an Attack or Rocket Sram shifter, or any Shimano shifter
    2385861000_d125abe796_m.jpg
  • submityournentries
    submityournentries Posts: 912
    or the really cheap pooey stuff like sram mrx and i think trx grip shifters should work with shimano mechs (this is what generally comes on the budget halfords bikes), but if your using them, them i just feel genuinely sorry for you, noone should have to suffer with them
    Ragley Blue Pig
  • rake
    rake Posts: 3,204
    submityournentries wrote:
    or the really cheap pooey stuff like sram mrx and i think trx grip shifters should work with shimano mechs (this is what generally comes on the budget halfords bikes), but if your using them, them i just feel genuinely sorry for you, noone should have to suffer with them
    it has sram mrx gripshift, with slippery rubber so your hand just slips round instead of changing gear. the back axle is usually bent before its too much of a problem, and the front disc brake has a fraction of the power of the rear v brake never mind any feel. the rest of the frame seems ok and the wheels seem strong (besides the back axle). im overwhelmed by its performance. :arrow:

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