The great thing about Excelsior's is that there is always something new to learn and they continue to throw curly ones at every turn. Before Excelsior/Henderson introduced the Timken bearing hub (1924 I believe) as shown in your picture Exeric, they built a Timken bearing hub using the Series 20/K/Early Deluxe rear hub shell. The dimensions are very slightly different to the ball bearing hub, but externally its hard to pick. I have a very rusty original one of these that still had the taper bearing cup in it, and the bust cover with wire lock ring. My understanding is that this is the hub that was used from some time in 1923 until the more well know Timken bearing hub came out in 1924 (later half?). Excelsior offered the taper bearing parts as a kit to convert the old ball bearing hub also.
Originally posted by exeric
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