Hi all, looking for some suggestions on my conversion of my Allen Sport from one speed to multi speed.
I liked this bike so much that I wanted to add some more gear range to it.
Because of the aluminum frame, and the 110 track type dropout, I was limited in my choices to add more gearing.
I found out that the original Sturmey Archer AW hubs were 110 O.L.D. so I searched high and low for a 20" wheel built with an old AW SA 3 speed hub. Would have preferred one with a coaster brake, but no go as they are bigger OLD than the 110mm.

I finally found one in UK and it arrived today, and it fits perfectly into the dropouts. That was the first goal. Also, it is new old stock, but a steel chrome Rigida
rim that is pretty wide. The original rims were 25mm wide, but the new one is 34mm wide. But fortunately, the 1.5 Kenda Kwest tire fit perfectly on it, and there was plenty of room,

The hub came pretty bare, so I had to improvise to get it together. Didn't want to do any ordering until I could confirm that it would fit and work. The cog spacing on the AW hub is bigger than the newer ones, so this requires a spacer. I did not have one, but took the offset 24 tooth off my other 3 speed, and lo and behold, I found that I could fit two opposing offset cogs on this hub and get two gears and the internal 3 (6 speeds! yeah)

I've done this once before many years ago, running a double cog on the SA hub, with a rear derailler and a double chainwheel on the front with front derailler for an ultimate commute bike that could be shifted at the stop light!

Here's a photo of the setup to where I have the wheel fitted into place, and rideable.