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Biopace?
The O SYMETRIC concept is different from that of biopace as the long axis of the oval in a biopace ring is inline with the cranks.
In the O SYMETRIC ring, the long axis of the oval is at 90degrees to the cranks.
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is that a bublan?
No. It's a repost.
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This thread is useless without pics, bring back draw your own collisions.