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Front 52 tooth chain ring w four 1/2 teeth(4 posts)

Front 52 tooth chain ring w four 1/2 teethBanky
Aug 15, 2003 9:08 AM
I purchased a TA chainring set "Hegoa" 52-38 model J5, the big chainring has four 1/2 teeth on it. At first I thought they were broken off but it appears to be part of the design, I think? Also the 1/2 teeth have 6 full teeth between them, Is this design or what? Can some of you techies help me out?
re: Front 52 tooth chain ring w four 1/2 teethdirthead
Aug 15, 2003 9:12 AM
All the manufacturers do it differently, but those half teeth are to make it easier for the chain to shift up onto the ring. They should be located adjacent to the shift pins. Also, there could a relief area machined on the inside of the ring next to the half teeth to aid in shifing as well.
re: Front 52 tooth chain ring w four 1/2 teethBanky
Aug 15, 2003 12:51 PM
you are correct, thanks, my only problem is that D ace 53 I had on did not have this feature. Is it an improvement, or will my shifting be worse?
No way to predict shifting qualityKerry Irons
Aug 15, 2003 4:19 PM
Generally, people have good luck with TA, and they know what they are doing. However, your setup is your setup, and you're going to be the one to find out whether shifting is better, worse, or unchanged (likely the latter).