In a message dated 11/22/01 3:17:38 PM Eastern Standard Time, Wornoutguy@aol.com writes:
> My pre war Schwinn New World has a balloon type one piece BB shell. It has
> an adapter to use cottered crank arms in it but they are some odd size and
> use the one piece crank chainring. I am looking for an adapter that lets
> me
> use standard cottered crank arms. Does anyone our there have one? They
> still make these for BMX bikes and such but they are for tapered spindles
> and
> won't do what I want them to do. Thanks Sam D.
>
Sam,
In the 2000 Quality Bike Parts catalog, page 100, there is an item that might be what you're lookig for. MRP makes it, the BBC1 conversion kit, QBP# CR0500, wholesale at $21.95. It comes with two "cups" that bolt into each other through the big "American" threadless bottom bracket shell with three long thin hex bolts. The thing that makes it possibly useful to you is that these cup inserts have interior holes threaded to accept standard English 1.37x24tpi cups. Could fit your cottered bottom bracket cups, I imagine, and lockring - if they are ISO.
Glenn Jordan - Durham, NC