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Old 12-29-20, 10:25 AM
  #8  
Eggman84
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Join Date: Nov 2016
Location: SoCal
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Bikes: 2014 Bruce Gordon Rock&Road, 1995 Santana Visa Tandem, 1990 Trek 520, 2012 Surly LHT

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Suggest you review a good article Jan Heine wrote on the Rene Herse Chainrings (https://www.renehersecycles.com/chai...hifting-ramps/


Based on your photo it looks like the small ring is forcefully "pulling" the chain onto the front side of the large chainring teeth just where the chain is supposed to release from the chainring. This is one of the reasons many crankset manufactures only do matched chainrings, they precisely control the travel distance between the teeth on adjacent chainrings so that the chain, when engaged on both chainrings during a shift, is not loose nor tight between the engaging/disengaging teeth on the 2 chainrings. As Andy noted above, this can lead to "chain suck". To minimize this, ease off the pedals when shifting,
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