How to build your own double (or more!) flyer spinning wheel

As told here, I have borrowed the Ekenmark book with the hopeless title (Afhandling Om Den förbättrade och förenklade Nya Magerska Linspinnings-Methoden, Jemte En wida ändamålsenligare Method, för så wäl Dubbel- som Enkelspinning, med förändring af en wanlig Spinnrock, både för en och flere personer på en och samma gång, hwarigenom den motswarar nyttan af 4 serskilta wanliga spinnrockar, Äfwensom Om bästa sättet, att få linet genom sjelfwa Rötningen mycket finare och mjukare, så att det derigenom blifwer ojemförligt ändamålsenligare till båda Spinning, garn och wäfnader, än hwad genom den wanliga Linrötningen och torkningen kan åstadkommas.
Utarbetad Af GUSTAF EKENMARK och HUSTRU
Med en större Lithografierad Planch
Stockholm Tryckt hos Lundberg & Comp. 1848)

I have also transcribed it (gothic print...), probably with some mistakes here and there.

Today I can offer anybody nerdy enough to want to know how to alter an ordinary saxony type spinning wheel to accommodate as many as 4 flyers, without "compromising" the original wheel: there is one .pdf here with text in both Swedish and (my attempt to translate it into) English - no light reading this (I doubt I have ever encountered sentences as long as in this text... hard to read in Swedish, even harder to make some sort of sense in English). This file has a couple of illustrations enlarged from the drawing (which is on the very last page).

There is also the "original" (transcribed, some sort of Swedish) - found here. No extra illustrations, but the drawing is on the last page.

If I end this post with "enjoy!" - would you think I'm having you on?!?