ANSI-25 floating chain tensioner

by lukevanhorn, published

ANSI-25 floating chain tensioner by lukevanhorn Mar 11, 2013

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This is a "floating" chain tensioner. Works great for taking the slack in low speed equipment. Works for horizontal or vertical applications. Use next to sprockets of smaller diameter.

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I would like to add, this is not a great idea for all applications. If you have high torque, or high speed the ring my brake or just fall out. And depending on what is going on that might not be good at all. People used to do this with tandem bicycles, but that was just a stupid idea. So just be safe in what you are using this with.

I work in the bicycle industry. "Flouting Gear" is just not a good idea. Having a real chain tensioner is the best idea. One that would either pull or push the chain to a side, not pushing both the chains a part, and not being attached to anything.

Thanks for the input. This is not intended for bicycles.

A couple months in and it is working perfectly for my use. I previously tried a "fixed" tensioner and the floating ones actually work far better for the application. Plus, they just look neat. :)

Excellent idea! So simple and obvious once you see it :)

Very clever. Big fan of this.

It would be nice to see a version that was flexible and springy, like those printed expandable bracelets.

Good idea. Also, cutting it in half down to ~2 layers of PLA might also offer a bit of flex.

What a great idea!