kaarv, Bradley Siderograph is based on "cycles", but it is based on astrological cycles i.e. the position of planets and their influence on earth (i know, i know, sounds kooky, but it works most of the time), which is TOTALLY different than Hurst, and has no relation that I know of to Hurst Cycles.
but Mr_USA ran a study of Bradley data and found lots of fibo relationships in Bradley - and there is a huge amount of fibo relationships in Hurst, so they are connected in a sense that both are "cycles", and that both have lots of fibo stuff in their underlying structure.
FYI - here are the links on cycles in general (very much like Hurst cycles), and on Bradley:
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