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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 10-07-07, 09:31 AM   #1
mavimao
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Need help choosing a chainring

I have a Shimano 105 crank with a 130BCD. I am looking for a 42t chainring and I found these two that looked pretty good

http://store.airbomb.com/ItemDesc.as...ogle&IC=CR1542

http://www.sheldonbrown.com/chainrings.html#rocket

I'm not sure about the rocket because the solid ring thing doesn't look all that hot. But sheldon recommends it for increased durability. What do you think?

BTW: I'm using a KMC Z 610 3/32" chain.
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Old 10-07-07, 09:55 AM   #2
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I have a rocket ring, and IMHO it is pretty ugly. It is on a conversion though, so the circular saw look goes ok..
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Old 10-07-07, 09:57 AM   #3
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I'd advise against Rocket Ring - they just don't seem to be very lasting.

On the other hand, I have always been, and still am, quite pleased with Sugino chainrings.
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Old 10-07-07, 10:02 AM   #4
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I'd advise against Rocket Ring - they just don't seem to be very lasting.

On the other hand, I have always been, and still am, quite pleased with Sugino chainrings.
Funny while I've never used a rocket ring I can't imagine anything being much worse than those cheap Al suginos.
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Old 10-07-07, 10:18 AM   #5
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Funny while I've never used a rocket ring I can't imagine anything being much worse than those cheap Al suginos.
I wouldn't mind my RR wearing out so I can put something prettier on

Jer
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Old 10-07-07, 10:35 AM   #6
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Funny while I've never used a rocket ring I can't imagine anything being much worse than those cheap Al suginos.
What would be a good quality chainring, then?
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Old 10-07-07, 10:37 AM   #7
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rocket rings are seriously fine chainrings to use.
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Old 10-07-07, 10:40 AM   #8
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Funny while I've never used a rocket ring I can't imagine anything being much worse than those cheap Al suginos.
A cheap Al Rocket Ring?

Of course, a steel Surly chainring would be better than both, but anyhow, my personal experience has been that Sugino chainrings last longer than Rocket Ring. But here's the deal: the worst chainring I have ever had the misfortune to use is Vuelta's - the ones that look a lot like the Rocket Rings. These are probably made of an alloy of butter and mercury.
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Old 10-07-07, 12:35 PM   #9
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Another vote for Rocket Ring. I actually think they look quite good, a solid disk.
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Old 10-07-07, 01:03 PM   #10
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But here's the deal: the worst chainring I have ever had the misfortune to use is Vuelta's - the ones that look a lot like the Rocket Rings. These are probably made of an alloy of butter and mercury.
Agreed, the older "universal" chainrings not branded rocket are junk, mine deformed like it had been hit with a hammer at the base of the teeth in under 1000 miles. Rockets are great, they are kind of ugly but I'm on the bike so I don't have to look at it
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Old 10-07-07, 03:53 PM   #11
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FSA makes a pretty good chainring in that size.. u dont necessiarily need ramped and pinned.. but they those are pretty good...but if i want something 1/8 pitch... look elsewhere...
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Old 10-07-07, 04:20 PM   #12
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Hey - you could try Spot Brand - their 42/130 works great for me on an old DuraAce crankset....

http://www.spotbikes.com/parts/
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Old 10-07-07, 05:09 PM   #13
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Hey - you could try Spot Brand - their 42/130 works great for me on an old DuraAce crankset....

http://www.spotbikes.com/parts/

Interesting company - I am intrigued by their chain tensioner! I really need that.
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