Does anybody know sth about the numerology system of Cheiro?

Cheiro used a Chaldean/Babylonian basis for his numerology. I have no confidence in the roots or the simple Latin letter counting used for names and personal numbering based on day of month of birth. The system seems haphazard and accidental, without a philosophical basis. The supposed connections to sound/"Word" theory in some parts of it don't really make sense to me as they're applied to various alphabets, which came about organically in different ways.

BUT I admit Cheiro's is the one system I still apply with timing and scheduling. I've adopted the precepts and for me they work in a mundane way.

I've known convinced and committed numerologists, but beyond what I think you're referring to with the Qabbalahistic mode, especially as incorporated into the Tarot, I feel like it runs through my (counting) fingers. With the Qabbalah there is a firmer grounding in numbers as a pure expression of reality and a progressive interpretation of creation and existence.

Compared to that, Cheiro's work is simplistic. Of course, as you know, he was primarily a palmist (hence his pseudonym), and extended into other areas for publishing. He also appears to have been a gifted natural psychic, in which case his "systems" would have served as conduits for his direct psychism.

In short, I'd suggest other approaches to numerology for deep thinking, and there's no harm in Cheiro's sometimes uncanny success with his easy, prosaic model.