Neville Cork was racing bikes in 1990 and decided to design and make his own bikes after breaking three frames that year.  He enrolled in a TIG welding class and took that knowledge and moved to Vilas, NC to build frames.  He spend some time experimenting with different geometries with Rand Perkins before settling on a somewhat unusual geometry.  The bottom brackets were at 12.5" and the frame were long and low.  This frame was considered a 16" frame and has an effective 24" top tube.  The larger frames had up to a 25.5" top tube.....long!  Other than the geometry, there isn't anything too unusual about the frames except a small plate to help control the effects of chain suck.  Not 100% sure of the build year on this one so we tried to use a few of the original parts to date the bike.