Dust Caps

Discussion in 'General Questions' started by Rockjaw, Jul 17, 2014.

  1. Rockjaw

    Rockjaw Member

    Hey all..

    Just curious ..Ive been building bikes with coaster brakes..each one I have to grind the dust cap down...does anyone sell these dust caps already fit?



  2. crassius

    crassius Well-Known Member

    I sell sprockets with the hole opened up to fit - $8 exchange when I sell a kit

    if a bike comes in for repair that was built without the cap - I make a plastic cap out of a gallon milk jug cap that fits & seals well in the standard hole, but wears a bit after a few months (easy to replace tho) - I sharpened the end of a 7/8 seat post to cut a circle in center of cap, then exacto-knife the threads off
  3. Rockjaw

    Rockjaw Member

    interesting..so how do you cut the milk cap? what tool?
  4. crassius

    crassius Well-Known Member

    camera is crappy, but you may get the idea - tool is piece cut off old seat post then sharpened (from inside) to get nice 7/8 circle cut

    View attachment 53527

    Attached Files:

  5. crassius

    crassius Well-Known Member

    stupid POS board s/w gave me 2 copies of first pic and no second pic

  6. Rockjaw

    Rockjaw Member

    i see..so you place it on and hit it with a rubber mallet hammer right?
  7. crassius

    crassius Well-Known Member

    usually put cap on wood or leather, then smack hell out of it with 3lb hammer : )