• 3/32 have never been approved by njs

    Absolutely this.

    I've heard it said that at least at the lower end of the price scale, 3/32" chain is more actually stronger and more reliable than 1/8". This would supposedly be due to singlespeed drivetrains being somewhat outdated and thus, chain manufacturers would be investing time, effort, research etc into multispeed chains.

    Pretty sure this would be invalid by the time you got to talking about NJS stamped chains.

    My experience, never had a totally 1/8" drivetrain skip or jump or miss a beat but when I fitted a 3/32" cog to my otherwise 1/8" track bike's drivetrain (should be compatible) it ran like shit, catching and clicking and banging under load.

    I've also had a fully 3/32" singlespeed setup drop a chain which almost put me under a transit van.

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