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  1. #1
    Junior Member
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    single speed conversion HELP

    so, i have an old threaded free wheel roadbike with horizontal drop outs, but it has a one piece crank (ashtabula)

    am i correct in thinking that i can replace the 1 piece crank with a 3 piece crank if i put in some adapters to fill the extra large hole that remains in the frame?

    i am thinking that i can run a 1/8 chain with 16:42 gearing onto a bmx crankset, to keep the chainline tight.

    does a 42 tooth chain ring on a bmx crankset with 1/8 chain onto a 16 tooth rear sprocket seem like it could work?

  2. #2
    Junior Member
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    Madison, WI
    My Bikes
    2009 Surly Long Haul Trucker - 1977 Sentinel Horizon (SS Conv) - 2010 Trek Fuel EX 8 - 2007 Trek Lime Lite - 2005 Redline Monocog (26") - 1981 Trek 710 - 2011 Raleigh RX1 - 1992 (?) Bianchi MTB (Winter Whip)
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    yeah it could work. Since the frame you have came with single-piecers I'm guessing it's a cheap set up. You might want to consider finding a higher quality bike to convert if your willing to spend the dough on adapters and bmx cranks. Don't spend the money unless it's worth it, you'll be happier in the long run and will be able to sell it for more after the apocalypse...
    In the words of Freddie Mercury: Get On Your Bikes and Ride!

  3. #3
    Senior Member 04jtb's Avatar
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    Mar 2007
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    West Dorset, UK
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    1983 Dawes Galaxy, 2006 Raleigh Airlite, 1982 Sun Solo (fixed)
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    Quote Originally Posted by FirstAidKit View Post
    yeah it could work. Since the frame you have came with single-piecers I'm guessing it's a cheap set up. You might want to consider finding a higher quality bike to convert if your willing to spend the dough on adapters and bmx cranks. Don't spend the money unless it's worth it, you'll be happier in the long run and will be able to sell it for more after the apocalypse...
    +1 I'd agree with this
    Quote Originally Posted by cc700 View Post
    i jam my thumbs up and back into the tubes. this way i can point my fingers straight out in front to split the wind and attain an even more aero profile, and the usual fixed gear - zen - connectedness feeling through the drivetrain is multiplied ten fold because my thumbs become one with the tubing.
    A group for all Dawes Galaxy owners to give and recieve information about them
    http://flickr.com/groups/dawes_galaxy/

  4. #4
    Senior Member maddyfish's Avatar
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    Jul 2006
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    Ky. and FL.
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    Me too, at least start with a frame with a 3 piece crank. For the price of an adapter you can probably find one.
    Not too much to say here

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