Sprocket Help

Discussion in 'Frame Mounted Engines' started by jmacpi33, Jun 27, 2007.

  1. jmacpi33

    jmacpi33 Guest

    What is the best way to enlarge the rear center hole of the drive sprocket? My rear hub is quite large on my new project and I need to "bore out" the mounting hole, by about 3/8 inch in diameter. And I need it to stay true. Thanks.
     

  2. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool: the most accurate way, if you don't possess the skill and proper equipment, is your local, friendly machinist. :cool:
     
  3. iRide Customs

    iRide Customs Member

    I just use a large bi-metal hole saw. Just make it a little bigger that your hub so if you don't get it centered it won't matter. I use cheap steel front sprockets for bicycles. They cost a fraction of the price of the ones that have the holes arleady drilled. I just bought a 38t for $6 or $7 bucks off ebay.

    Dan
     
  4. vintagebiker

    vintagebiker Guest

    Yeah, hole saws don't make true holes.
    Use a lathe or a milling machine.
    You can also do it on a drill press with a fly cutter type hole cutter.
    If you don't have access to these machines, go see a machine shop.
     
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