Very exciting things happening in this thread!

My humble contribution for now is a picture of a Charlie Cunningham modified Hi-E hub with very wide flange spacing. The outer lip holding the bearings has also been machined away and the flange end sections have been riveted to the main body so that the bearings can be replaced much more easily. The picture caption also says that a grease guard port has been added, although this may have been an erroneous interpretation. It's interesting to try to figure out how a grease guard system could have been added, given that it needs internal seals to direct grease only to the bearings and prevent the grease from filling the whole hub cavity in order to work as Charlie intended.




This is from the 2002 Summer issue of the Rivendell Reader, which also has pictures of Charlie Cunningham's unusual early steel folding bicycle and some other neat things. Charlie had some things in common with Harlan in terms of the will to experiment and innovate.

The whole issue can be accessed here:
https://notfine.com/rivreader/RR27.pdf