Join Date: Aug 2008
Location: Somerville, MA and Catskill Mtns
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Need a Sturmey-Archer 3-speed hub expert!
i picked up a 1975 raleigh with the venerable AW hub. the hub works well enough but it has this strange noise and some other mysterious behavior that my other AW-equipped bikes don't have. i want to know if this is normal for this hub, a sign of a bad adjustment/lack of lubrication, or a sign of a faulty/worn hub:
1) whenever i coast after pedaling, there is a single clunk (or click) sound, immediately as the hub begins to coast. it does this in every gear, and you can hear it and feel it in your foot through the drivetrain.
2) i get the same clunk again if i downshift from 3rd to 2nd while coasting. just as the hub engages into 2nd from 3rd (while still coasting), there is that same single clunk. it doesn't do it downshifting from 2nd to 1st.
3) when i got the bike, the cones were too tight. rear wheel had no play at the bearing and the pedals rotated when coasting. i loosened the left cone 1/8th turn to introduce slight play at the bearing. the pedals don't spin when coasting now, HOWEVER, they still want to turn less than one complete revolution and then "settle" into a position for the remainder of the coasting.
the spindle indicator is adjusted perfectly (totally slack in 3rd, and about 1 mm of movement left in 1st). i have had no problems with shifting or sudden freewheeling (since adjusting the indicator), and there are no unusual noises when pedaling in any gear.
i haven't added oil to the hub yet, but there is a pretty expansive film of dust-covered oil all over the hub, so i'm guessing it's had oil added over the years.
also, on a different note, does anyone know when SA changed their stamped hub logos from the plain text STURMEY ARCHER to the current outlined version? i have an S-A AB hub on a bike that should be an 80s bike, but the hub is not date stamped. it is chrome and has the more current "outlined" lettered logo.