SINGLE SPEEDS: Instructions on how to make a single speed
Here is a link to a site that offers helpful hints to creating your own single speed with the bike you already have.
No need for horizontal drop outs.
No need for a Singleator
Keith Bontrager shares some ideas on how to make an inexpensive single speed
especially good for those who want to make a 2 or three speed
(front chain rings for the 2 speeds)