Daniel J.wrote a review of Absolute Black SRAM Oval Direct Mount Traction Chainring on October 23, 2019
Familiarity: I've used it several times
I bought the 28t oval to gear down my Santa Cruz Tallboy mountain bike from 32t round. This oval chainring makes it easier to go up steep hills and around switchbacks because it pedals through the dead space at top of stroke easily and puts the power in mid stroke where it does the most good. The only downside is when I am pedaling easy on flats, there can be a kind of ‘skip’ as it goes through the easy part. The solution in to shift to a higher gear or pedal harder to keep tension on the chain.