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Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,084
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
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The large ring does show wear, but I doubt it will cause any issues for a while longer. Besides the different tooth profiles due to the shift sections the teeth the teeth at the point of power (with the RH arm at 3:00 the teeth at what would be the top of the ring, and with the LH arm forward the now different top teeth too) will wear faster then the teeth at the point of less pedal power. Back in the day we used to rotate our rings every so often to even out the wear. These days that would change the rotational locations of the shift gates, not a big deal for riders who know how to shift well.
As to the crank being compatible with an 8 speed cog set, Yes. Andy
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AndrewRStewart