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Just to start a debate (???) I would have thought that a 520 chain should actually be stronger than a wider chain. The catastrophic failure modes for a chain would be 1. fracturing either of the side plates or 2. pin separation from the side plate
The side plate thickness would not change as between a 520 and a wider chain but a wider chain, if there was any misalignment in the chain run, would suffer a higher force at the pin attachment point because the longer pin would be a longer lever.
The wider chain should of course last longer because the loading on the rollers would bve spread over a wider contact area.
Discuss (???)
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