Hi, sounds like this 'spoke' is tubular, in which case any metalworker worth his salt should be able to cut back the rust and weld in a new piece of tube and clean off the weld area smooth, then paint it. Or you could find a piece of tube that slides inside the broken pieces then drill and fit some 4mm 'pop' rivets either side of the join. Different thing if it's solid bar. If you're in E.Kent, come back on this forum if you'd like it repaired.
Invicta Victor, April 2010