Rivnut
Cruisin' on my Bluebird
The Ultimate Sears Spaceliner Reference | Middleweight Bicycles
After a year long research exercise, I have compiled reference information for the 44 versions (models) of the Sears Spaceliner. If anyone has better photos for a specific model please contact me and I will add them to this reference. Also, if I have used reference images of your own bike...
thecabe.com
Here‘s a link to a Forum dedicated to Flightliners/Spaceliners in the Middleweight forum.