Seat Post size

[bebanovich]

Sorry is this has been covered ad nauseam but "seat" and "post" both seem to be too common to allow a search. I'm trying to find the diameter of the seat post from a Sears Flightliner circa '62. I could post a picture if needed but the thing is twisted, crushed, marred and charred . . . you know the drill.

 

[deorman]

Most 60's coaster bikes have 13/16" or 7/8". Measure the opening, or the outside of the tube minus 3/16".