XX mix chainring

cborrman
cborrman Posts: 125
edited May 2010 in MTB workshop & tech
Have seen new dynaglide article and xx stuff and finally planning move to try two front rings.

issue is, using sheldon brown's calculator, I could still get up leith hill and any hill past about 60km mark on SDW with a 26T, but often find my 44T short on my training route, so would not want to go lower: a 26.45 would be ideal, or could struggle with 26.42, but not 26.39.

I have read the blurb of 13 pick up points, etc on sram site, however, I have never thought I needed more than two pick-up points on XTR, so surely there must be a way to get 26.42 or even 26.45 on xx or similar 26.46 on shimano.

Is this possible, with just even one pick-up point (need some lowest common denominator maths beyond my ability) or is XX and dynaglide the greatest marketing trick yet: getting us all to upgrade front, rear derailleurs as well as cassette and chain, and get us all to but two cranks or at least a second spider to boot!
s-works stumpy FSR, sl2 tarmac, siglespeed rockhopper and a bog standard allez

Comments

  • supersonic
    supersonic Posts: 82,708
    They both just offer options - nothing new or particularly innovative about any of this.

    Having said that the 36t may be useful out back, and a wider range front mech.

    You would not be able to use 45/26 chainrings, too far a gap. 16 tooth gap is the quoted max with some mechs.

    Have a look at after market rings that fit what you want.
    GT ZASKAR CARBON TEAM

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  • cborrman
    cborrman Posts: 125
    thanks supersonic, was not aware of 16 tooth limit, but that should mean 26.42 workable? good call as well, will also see what rotor or other will allow max
    s-works stumpy FSR, sl2 tarmac, siglespeed rockhopper and a bog standard allez
  • supersonic
    supersonic Posts: 82,708
    Check the specs of the mechs, but I think the xx allows a 16t. Also check max teeth too.

    Often they work anyway lol, but many combos out there, and some work better than others.
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • cborrman
    cborrman Posts: 125
    silly question as well, has sram gone down the simple bottom bracket route of shimano (allen key and a BB spanner) or is it still the pig that was removing a diabolous crankset?
    s-works stumpy FSR, sl2 tarmac, siglespeed rockhopper and a bog standard allez
  • supersonic
    supersonic Posts: 82,708
    Not sure lol.

    Check out the SRAM service guide. I would imagine it is the same as the Truvativ stuff.
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • cborrman
    cborrman Posts: 125
    Sorry, meant turativ holz... Or whatever it was called, diabolus is raceface... Doh!

    It appears from xx you can buy a whole new spider and rings and just bolt it in: downs or marathon: 26.39, normal: 28.42, speed freak: 30.45, still a bit of a pita tho
    s-works stumpy FSR, sl2 tarmac, siglespeed rockhopper and a bog standard allez

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