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Identifying 6-speed chain rings

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Identifying 6-speed chain rings

Old 04-10-17, 09:41 PM
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howellhandmade 
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Identifying 6-speed chain rings

Undertaking my first project bike, a comprehensively hashed Schwinn Voyageur which I will use for a commuter. Managed to save the wheel bearings, replaced the BB, trued and cleaned and lubed, replaced cables. The chainrings are toast, and since the cranks are 170mm and I prefer 175 I figured I might as well look on the internet for a crankset. It is my understanding that 6/7/8 speed are compatible but 9 and up don't work well with 6-speed chain/cogs. Assuming this is true, nd please set me straight if it's not, how do I identify a "vintage" triple crank listed for auction as 6-speed suitable? The bike has a Sakae XCE crank, and I have seen a couple of that model, just not 175, and there are so many others at better prices if I know that, say, a Shimano FC-M201 will work.
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Old 04-11-17, 07:09 AM
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Andrew R Stewart 
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I don't think any one has done up a chart or list of which cranksets are what speed compatible. But here's some basic guidelines. Pretty much any 1980s cranks are 8 speed or less. Pretty much any ramped or pinned crankset is not 6 speed. Pretty much any ramped or pinned ring that is bolt mounted will be 7, 8 or 9 speed intended.


The issues are two fold. First is the chain width and ring c-c and if the chain scuffs the insides of the adjacent and larger ring when in the small rear cogs, lift pins sticking out a tad more then the teeth make this chance greater. Second is the ring c-c and indexing compatibility. But if you're using friction levers for the LH side this is moot. Andy.
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Old 04-11-17, 12:12 PM
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howellhandmade 
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Thanks, Andy. Given 1) my inexperience with changing drivetrain components and 2) the fact that I found some NOS, I decided to just replace the rings and get on the road. If something that is obviously correct and better shows up I can easily swap later.
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Old 04-11-17, 03:02 PM
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Use any 8 or 9 speed crankset, and a KMC X8.93 chain with your 6 speed rear and it will work fine.
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