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Should/Can I get a 51 tooth chainring?(5 posts)

Should/Can I get a 51 tooth chainring?bigskulls
Mar 29, 2002 11:01 AM
I've been reading here that the 53/39 front chainring set up is really a racing rig, which is something I am in no danger of needing. It came on my bike when I bought it, and I'm strictly a recreational rider. My bike also came with an 8 speed 11-23 cassette, and I purchased a new cassette (12-25) recently when I bought some new wheels. I tried the new cassette, but it didn't shift well at all. Seemed as though the derailleur is sitting too close to the 25t cog. So, my thinking is that if I get a 51 tooth front chainring, it will give me some easier gears to ride and maybe give the chain enough slack so that it will shift OK. I don't want to fiddle with the limit screws or other derailleur settings, but I don't want to bring it to the LBS either... What should I do?
re: Should/Can I get a 51 tooth chainring?Chen2
Mar 29, 2002 11:32 AM
You should be able to shift to the 25 cog ok. You may need to adjust the "B" screw on your rear derailleur and/or add a few links of chain. Your shifting problem could also be as simple as insufficient cable tension. Try adding tension by turning the barrel adjuster counter-clockwise 1/2 turn or so. If you get the tension too tight it won't shift to the 12.
I agree that most of us would be better off with a big ring smaller than a 53, you can probably find a 52. I'm not sure who makes a 51 but I always thought it would be a good option. I think you will find that the 25 cog in the back will help you a lot. I assume you replaced your 8-speed cassette with another 8-speed.
Best change I ever made was going to 46-36-26cory
Mar 29, 2002 11:44 AM
After years of riding, I admitted that I was never going to need a 53-11 gear. When I built my Atlantis, I took Grant's advice and put a 46-36-26 triple in front with an 11-28 cassette. It's a huge improvement for me and, I think, for most casual to semi-serious riders. The high gear is still 113 inches, which is all I need, and I have a useful granny with lots of gears in between.
If I were you, I'd go farther down than 51--maybe to a 48. You'll have to shorten the chain a little, but that's easy.
re: Should/Can I get a 51 tooth chainring?Chen2
Mar 29, 2002 12:59 PM
TA does make a 51, also just about any other size you might want.
http://www.frogbuilder.com/index.phtml?d=374&address=www.xpedia.co.uk/acatalog/Xpedia_Online_TA_CASSETTES_AND_CHAINRINGS_106.html

~Al
re: Should/Can I get a 51 tooth chainring?LC
Mar 29, 2002 1:27 PM
48x11 is still a big gear, or 50x12 would be plenty big too. 51 while made, is less common. If you are going to bother changing then I would say go for something that will really make more than just a token difference.