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Fixed wheel cog

  • 29-03-2012 12:28pm
    #1
    Joekers
    Registered Users, Registered Users 2 Posts: 1,260 ✭✭✭


    This may sound stupid but can I just take a piece out of an old casette and use it as a rear fixed wheel cog ?


Comments

  • #2
    seamus
    Registered Users, Registered Users 2 Posts: 68,317 ✭✭✭✭seamus


    Fixed, no. Singlespeed, with enough spacers on a standard freewheel, theoretically yes.

    Though they're designed and machined with shifting in mind so you might find that if the chain isn't perfectly straight or appropriately tensioned, the cog will "spit" the chain off it more readily than a standard cog will.


  • #3
    Joekers
    Registered Users, Registered Users 2 Posts: 1,260 ✭✭✭Joekers


    seamus wrote: »
    Fixed, no. Singlespeed, with enough spacers on a standard freewheel, theoretically yes.

    Though they're designed and machined with shifting in mind so you might find that if the chain isn't perfectly straight or appropriately tensioned, the cog will "spit" the chain off it more readily than a standard cog will.

    Cool cheers for the info


  • #4
    piston
    Registered Users, Registered Users 2 Posts: 523 ✭✭✭piston


    Fixed or track sprockets are threaded (1 3/8" x 24tpi standard British cycle thread. French threads were around but are obsolete nowadays) and will thread on to track hub or a plain old fashioned hub for a thread on freewheel block.

    Cassette hubs are splined to fit on a freehub, and with spacers, can be used to create a single speed freewheel bike, but not a fixed gear unless you braze the freewheel mechanism in the hub to lock it.

    The third type of splined sprocket you may come across is to fit hub gears like the Sturmey Archer AW.


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