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Old 07-17-12, 07:21 AM   #1
not_me
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Where to buy chainrings?

Jut wondering where everyone buys their chainrings from?

I have a couple bikes with biopace that I'd like to switch to regular round rings.

I was looking around on ebay, and for the price of two Shimano SG-X rings, it looks like it's cheaper to just buy a new crankset.

Last edited by not_me; 07-17-12 at 07:37 AM.
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Old 07-17-12, 08:04 AM   #2
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LBS should have regular (130, 110, 104 PCD) chainrings in stock, to replace the Biopace rings. Online shops have them as well. A set of chainrings usually costs about 30% to 50% of a new crankset.
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Old 07-17-12, 09:12 AM   #3
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So can I use a 9 or 10 speed chainring on an older 7 speed bike without any issues?
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Old 07-17-12, 09:27 AM   #4
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LBS should have regular (130, 110, 104 PCD) chainrings in stock, to replace the Biopace rings. Online shops have them as well. A set of chainrings usually costs about 30% to 50% of a new crankset.
From what I'm seeing, 2 new rings will cost about $60. What I meant was I can buy a gently used crankset from ebay and then sell the arms and probably come out ahead. If I can find a gently used 600 tri colour with round rings, I may just buy that and sell mine with the biopace.
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Old 07-17-12, 10:15 AM   #5
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That sounds like a lot of fuss and bother to get a couple of round rings. It's the reason why BFer's own N+1 bikes...to salvage parts
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Old 07-17-12, 10:33 AM   #6
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If I'm willing to wait or the ring I want is rare I may look on ebay for chainrings. Often I've gone to my LBS (typically, Harris Cyclery) for "commodity" rings like 110mm BCD. Prices vary depending on the brand or BCD. Campy NR rings are expensive. Common sizes of 110mm Sugino rings may be $35 to $40, but for an ebay purchase you have to factor in postage and the fact that if it isn't a new ring it may be in unknown condition. If I'm lucky I have what I need in my meager parts collection. Sometimes I've traded with another BF member. Unless you are on a really tight budget or trying to restore a classic, chainrings are just chanrings.
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Old 07-17-12, 10:40 AM   #7
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That sounds like a lot of fuss and bother to get a couple of round rings. It's the reason why BFer's own N+1 bikes...to salvage parts
I have a lot of bikes. Unfortunately, most of them are from the late 80's and are Shimano equipped so they've all got biopace.

Off the top of my head, installed on bikes and in my parts bin, all these cranksets have biopace rings:

3 Shimano 1050
1 Shimano 6400
1 Shimano 6207
1 Deore DX
2 Shimano Exage

So 8 cranksets, 17 biopace rings total. FML.
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Old 07-17-12, 10:46 AM   #8
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Co-ops are best for rings. If not, buying a crankset and selling the arms is cost-effective, but time consuming. The ramped techy rings (which are about a million times better at shifting than flat rings) are money traps when you buy them new.
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Old 07-18-12, 06:46 AM   #9
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Ebay, with patience, can be not so bad on the $$. Have you checked loosescrews.com?
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