Is there anything to Oval Chainrings?

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I don't see how the curved and L shaped arms make any difference. It's still a straight line between the pedal and the hub. On that acute angle one, looks like the corner would hit the ground before a pedal strike
 
I don't see how the curved and L shaped arms make any difference. It's still a straight line between the pedal and the hub. On that acute angle one, looks like the corner would hit the ground before a pedal strike
The only advantage is to the manufacturer. These things easily break so you have to get a new one.
 
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Biopace on my profile pic. Always been on there, ride great. I haven't had the need to seek out another set though.
 
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