Out of curiousity, I was wondering:
- Why were 10 tooth gears chosen for the top beam?
- Why was the small chain chosen for hanging the sled?
Aside from the obvious: the chain fits the sprockets and the sprockets fit the chain, I am curious why we don’t use bike chain. I do a modest amount of biking and 8 speed chain is the widest and most durable of the bike chains and is the cheapest. It would open up the ability to use 11/12/13/14 tooth gears on the top beam which could theoretically increase the upper feed rate limit rather than jumping from 10 tooth to 25 tooth with the chain currently on the system. My disclaimer is that I’m asking because I want to know the constraints as to why things are the way they are and if there is any room for improvement. Some things are fixed and won’t change and others are tradition and would change if someone decided to try. Anybody care to tell the story?