The Voynich Pipes

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This is Alchandrus, subdividing Zodiac signs into groupings of two or three sub-signs, something quite unlike the Voynich pipes with their 14/14 regularity

I'm sorry for the late answer. 
Those subdivisions (sub-signs) are right the lunar mansions. In that MS, they are 27, as some astrological schools count 28, another ones - 27 mansions. I agree that 14/14 regularity is rather strange for mansions, unfortunately, the good/bad mansion sequence usually also differs. 
I have a question: if those 28 pipes mean 28 days of Saturn, what the labels in the You are not allowed to view links. Register or Login to view. diagram could mean?