NRS91. No, it's the first gear 13T gear with 300+ hours of runtime. still worked fine, I discovered the wear when I did maintenance. Figured it was time to replace before mayhem occurred. The gears have different pressure angles also, go figure. one has 14.5 degrees and the other has 20 degrees, Soft aluminum, and Glass fiber reinforced nylon. not the best combination I've seen.
[IMG]
IMG_4490 by
Bo Wallen, on Flickr[/IMG]
Going to change that soon, very soon.
