I installed an elliptical Wolf Tooth 28T ring on my Pivot Mach 6. Partially because I was curious about the elliptical benefits, but mostly to cure crappy shifting in the lowest 2 gears due to a poor chainline.
The WT ring is well machined and finished. It looks like a quality product. With a bunch of rides on the new oval ring I thought I would comment on it. The enhanced chainline is appreciated and I will buy rings with as much or more offset to the NDS of the bike going forward.
My riding is typified by steep slow techy climbs followed by hold-on-for-dear-life steep techy downs. I don’t pedal a ton on the downs so my chain stays in the easy gears most of the time hence my small ring and desire for good shifting at the low end of the cassette.
The WT ring is offset towards the NDS a lot more than the stock RF ring. That makes for a better chainline in the low gears. Just doing a backpedal test the chain now stays in place on the 36T, but still drops down one cog in the 42T. That’s better than before. Shifting has been improved, but it’s not 100%. I’ll likely try a ring with even more offset next time around and see what happens.
As far as the ovalness of the ring goes I can definitely say there are no downsides and it only took a moment to get used to pedalling the different shaped ring. That surprised me as the oval ring looks so different to the round ring I am accustomed to.
I’d love to give you a definitive answer as to whether it’s a significant improvement over the round ring it replaced, but I’m finding the changes too subtle to get much contrast on. If I could setup two identical bikes with both types of rings and swap back and forth I’d be able to tease out the differences, but as it is all I can say is the oval ring works as well as the round ring for sure. If it works better than the round ring it’s subtle enough not to pop out at me.
If you are curious about oval rings I wouldn’t hesitate to try one, but at the same time I don’t think it’s a game changer. At least not for me.