Nylon Ring for Yamaha Raptor One-Way Bearing

thingiverse

This did fail shortly after the last update, but I've since discovered why it failed. It turns out that the individual bearing pieces were ground down so much they created a razor sharp edge inside the grove of the spring mounts, which quickly sliced anything you put in there to pieces. It probably would have lasted a very long time if not for the razor sharp parts. I've since gotten a good deal on some 031 O-rings (1-3/4" ID, 1-7/8" OD), and am now using 2 of those since fixing the razor sharp parts. Update 3-16-17: This ring has been working wonderfully so far, with no signs of stretching or breakage, sounds completely normal when starting/stopping. I doubt anybody will ever find or download this, but here it is - a very simple ring meant to be printed in weed wacker/weedeater nylon trimmer line. This replaces the metal spring that tensions the one-way bearing parts. With the Yamaha Raptor, at least mine, a 2001, it had a major tendency to spin the crank backwards during a backfire or failed attempt at starting, which results in the one-way bearing parts expanding a ton, thus breaking the spring. I have been using plain old very-low tension rubber bands and they last for a few months. I got tired of replacing the rubber-bands, so I'm gonna try this. (BTW, buying the part is very expensive, thus making a printed part really wonderful) The best way to install this that I've found is take the one-way out and remove the top lipped retainer, remove all the bearings, note the direction of the vertical line, then take either all or 3/4 of the bearings and slide them onto the ring, then slide the assy back onto the main part, similar to the first pic, then slightly stretch the ring and insert individual bearings until you're done, then re-assy and put it back in the engine and have fun! The end product should look like pic 2.