Stone 36t oval chainring, SRAM/Shimano 1x12. Lightly used, free U.S. shipping.

Description: * 36t* SRAM 3-bolt direct mount* 3mm offset* Compatible with SRAM Eagle or Shimano 1x12* Durable 7075 T651 aluminum* Selling because I moved to a 38t, same brand and modelI’ve always preferred to build up my own bikes from the frameset, often swapping my parts kits over to a new frame. But after 38 years of that, and the proliferation of chainring types, and different ways to connect them to cranks arms, I have ended up with a collection of chainrings that shift well and have lots of life left in them, but either don’t fit any cranks that I am using, or are of a tooth count that I have moved away from. I consider hanging onto them, because “you never know,” but that bumps up against the occasional need to clean out the parts bin. Right now, cleaning has won out, and I have tried to price these to sell.I am a 5’3”, 130-pound recreational rider who has always been light on his gear. I don’t ride in the rain, and I never use a hose or pressurized water to clean my bikes. I always keep my bikes, drivetrains especially, properly adjusted. I also hot wax my chains and swap them out regularly, so while this chainring might show some de-coloration at the teeth, which is normal, the metal has very little wear.This is also an oval chainring. There has long been a debate about oval rings—whether they actually add a performance boost, or are just marketing hype. The idea is that a properly oriented oval ring will keep your feet in the power zone for slightly longer while moving them through the dead zone slightly quicker, giving you a little more bang per pedal stroke while lowering fatigue a tiny bit, small gains which can add up over a long ride. Others say that we don’t naturally pedal circles, and that oval rings can smooth out the pedal stroke, making it more circular and efficient. And yet others say that all of this is nonsense—that oval rings don’t perform any better than round rings. Significantly, no one says that they perform worse than round rings. I first tried them years ago on my Cruzbike V20 recumbent race bike (oval rings are pretty common in the recumbent world), and noticed a consistent 2 mph gain; my 22-23mph cruising speed had become 24-25 mph, with no change in fatigue levels. An upright rider on a traditional diamond frame bike might not realize a whole 2 mph boost, since they have to contend with much more air resistance. But even a .5 to 1 mph gain with either lower or the same fatigue levels still adds up over the course of a long ride. It’s what riders call “bolt on speed.” I now use oval rings on all five of my bikes: two recumbents, a standard road bike, a gravel bike, and a mountain bike. The pedaling sensation feels a bit odd at first, but that goes away after about three minutes. If you’ve ever been curious about oval rings, but didn’t want to plunk down a lot of money for something you aren’t sure about, here’s a chance to try it out for less. If you like it, great. If not, you aren’t out much, and can probably resell this for what you paid for it.If you have any questions, please don't hesitate to ask. I will cover the shipping cost within the Continental U.S.

Price: 15 USD

Location: Chico, California

End Time: 2024-12-12T18:14:36.000Z

Shipping Cost: N/A USD