Quote:
Originally Posted by Chris is me
What I mean by that is that it takes a degree of engineering knowledge, design knowledge, and care to run exact center chain runs (outside of a tube)
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I agree mostly that to build an efficient and high quality c-c chain system you should investigate the principles in depth.
I'll offer a counterpoint though in that this past year we ended up having to run our elevator c-c at the last minute when a couple of other things failed shortly before build season ended. It was always our intent to use a tensioner but when that failed, it was the quickest way forward was to just go straight c-c and it worked just fine without any design changes. We had to adjust the chain once in our two competitions (removed a link) to keep it ratchet free. While I'm sure it wasn't as efficient as it could have been (after removing the link it was certainly over tensioned), it worked well and didn't cause us any noticeable problems.