Originally Posted by: Fret spider
I had the notes C Eflat Gflat A (1 m3 b5 bb7)
then i decide to start i minor arpegio on each of these notes (1 m3 5)
you have C Dflat Eflat E Gflat G A Bflat (1 b2 b3 #4 5 6 b7) i think
im finding it quite interesting to play around with as its got diminished arpegios and minor chords and even some majour ones pop out.

That's probably the coolest way I've sen to construct the H-W diminished scale :) .
Some considerations:
By construction, you have a minor arpeggio from C, Eb, Gb, A.
Always by construction, you have a diminished arpeggio from the same notes.
Additionally, as you mention, you have also a major arpeggio from the same notes - which is an unexpected bonus (that's for triads. If you add the 7th you have a C7 arpeggio). This means that this scale can fit, if played properly, on C major, C minor and C dimimished at the same time. (Played properly = depending on the chord you're playing on, do not stress dissonant notes too much. i.e. if played over Cmajor do not stress Eb too much unless you resolve it on E. Same for Gb and G.). And of course on the dominant altered chords as Christopher mention. Truly a scale to experiment with!