Rather than use an obsolete, and near impossible to repair piece of 
equipement like a 3 speed hub, I have a different solution. Go with 2 speeds 
instead. You could use a standard double chainring crank with a front 
deraileur and an old 5 speed hub. Instead of mounting a rear deraileur you 
would only need a simple spring loaded lever with a single jockey wheel (to 
retain chain tension). You would have in effect a 2speed bike (low and high 
gears) with a very simple gear system with the added advantage of being able 
to move the chain to a different rear cog (albeit mannualy) when conditions 
dictate.
--- Maximus 3.01
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