I thought I died and gone to heaven when I saw your Bow 2 operate. It took me back to 1994 when I saw Jim Borden's works on display at the NAWCC HQ in Columbia, PA. Function and beauty taken to their highest level. After reading about John (Longitude) Harrison in the late 1970's, I joined NAWCC in 1980, hoping to find a dimensioned drawing of the Grasshopper somewhere in the literature. I soon found the April 1972 issue of the NAWCC BULLETIN (Whole Number 157) which contains the entire article of Guy D. Aydlett's article, "The Anatomy of the Grasshopper". In all the intervening years, I tried to build a working model, but my skills as an amateur wood-crafter so far have failed me. I keep trying.
In NAWCC Bn. #161, Dec. 1972, Aydlett gave some info on other clocks he was building, and in NAWCC Bn. 196, Oct 1978, he wrote about "A Wooden Works Month Clock", giving tooth counts and other vital dimensions.