On Friday, January 10, 2020 at 10:14:09 AM UTC-8, AMuzi wrote:
https://bikerumor.com/2020/01/06/pat...don-wave-tech/
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Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971

Doesn't it seem sort of silly that you would drill a million holes in a chainring to make them as light as possible and then stick steel magnets on them? On 1 x's I suppose the problem is going to be chain retention what with very wide rear cog ratios nd no front derailleur to hold them in place. But don't you think a plastic retention cage would both work better and be lighter?