is there a quick release single speed sprocket gadget

geordiefella
geordiefella Posts: 302
edited October 2010 in Commuting chat
thinking of a single speed cx bike for power training and winter commuting. no gears during and icey / snowy stuff. the grit treats them awful so am planning a single speed cx so i can use schwalbe studded tyres.
anyway, was thinking that there might be a gadget to change out the rear sprocket depending on wind / weather. Anyone got any thoughts?
Cannondale BadBoy Rohloff
Cannondale SuperSix / 11sp Chorus
Ridley Excalibur / 10sp Centaur
Steel Marin Bear Valley SE
Twitter @roadbikedave

Comments

  • asprilla
    asprilla Posts: 8,440
    edited October 2010
    Surely a double sided hub will solve that? When you want to change you just turn the wheel round.

    Alternatively, it only takes 30s to remove the lock nut and change the sprocket.
    Mud - Genesis Vapour CCX
    Race - Fuji Norcom Straight
    Sun - Cervelo R3
    Winter / Commute - Dolan ADX
  • geordiefella
    geordiefella Posts: 302
    double sided hub, good idea. forgot about that (use discs at the moment).
    Cannondale BadBoy Rohloff
    Cannondale SuperSix / 11sp Chorus
    Ridley Excalibur / 10sp Centaur
    Steel Marin Bear Valley SE
    Twitter @roadbikedave
  • wgwarburton
    wgwarburton Posts: 1,863
    Also check out the Miche system- there's a sprocket carrier and the sprocket slides onto splines, then is held by the lockring.

    ..or Sturmey s3x

    .. or Surly Dingle? There's a freewheel version made by someone else, too.

    Cheers,
    W.
  • nicklouse
    nicklouse Posts: 50,675
    geordiefella wrote:
    thinking of a single speed cx bike for power training and winter commuting. no gears during and icey / snowy stuff. the grit treats them awful so am planning a single speed cx so i can use schwalbe studded tyres.
    anyway, was thinking that there might be a gadget to change out the rear sprocket depending on wind / weather. Anyone got any thoughts?

    what are you actually wanting?

    get s SS kit and a tensioner if needed.

    have a read
    http://www.bikeradar.com/forum/viewtopic.php?t=12534960
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • ride_whenever
    ride_whenever Posts: 13,279
    white industries make a dinglewheel, ie a double freewheel, coupled with a pair of front rings you have two ratios with the same chain.
    Neeermad
    Carbon 456
    456 lefty
    Pompino
    White Inbred
  • woodford2barbican
    woodford2barbican Posts: 1,505
    ride_whenever wrote:
    white industries make a dinglewheel, ie a double freewheel, coupled with a pair of front rings you have two ratios with the same chain.

    Why not just run some gears?
  • lae
    lae Posts: 555
    Because you don't need shifters, cables and mechs. It's a winter bike. And Surly make a two-speed fixed cog so you could have two speed fixed too.

    The problem with these two-speed freewheels and hubs is that even with a double crankset there's not much difference in gear ratios.

    What I did was get a double-sided hub, 18t fixed on one side and 22t freewheel on the other. Then got a double chainring 46/42. I could run it as 46/18 = 67" fixed, or 42/22 = 50" freewheel (for hilly areas). Because the number of teeth adds up to the same you can use the same chain without a tensioner.

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