Compact chainrings on Dura Ace?
03-17-08, 09:12 AM
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Compact chainrings on Dura Ace?
Can I simply swap out the 53/38 rings on my 2005 Dura Ace crankset to 50/34 rings and make it compact gearing? I realize I'll have to lower the front derailluer.
03-17-08, 09:19 AM
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It is fantastic.
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03-17-08, 09:23 AM
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It's just a marketing catch.
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03-17-08, 09:29 AM
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03-17-08, 09:37 AM
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this is why you need a Zipp Vuma Quad.
Compact BCD, but also availabe with standard size rings. So you can n run 53/39 or 50/34 on the same crank. Dual functionality to offset the slightly higher price.
Compact BCD, but also availabe with standard size rings. So you can n run 53/39 or 50/34 on the same crank. Dual functionality to offset the slightly higher price.
03-17-08, 09:48 AM
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merlin: FSA makes chainrings in all diameters for 110mm BCD.
https://www.universalcycles.com/shopp...&category=2628
https://www.universalcycles.com/shopp...&category=2628
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03-17-08, 09:52 AM
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merlin: FSA makes chainrings in all diameters for 110mm BCD.
https://www.universalcycles.com/shopp...&category=2628
https://www.universalcycles.com/shopp...&category=2628
03-17-08, 09:54 AM
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03-17-08, 10:56 AM
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Even if you do change and fit the chain rings - it's not all the things you'll have to do. You'll also possibly have to readjust your chain length.
03-17-08, 11:07 AM
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I'm pretty sure the smallest chainrings you can get with a 130 is 38t, certainly you can find 50t chainrings. However, if you want something more climbing friendly you're probably out of luck and will need a new crank.
03-17-08, 11:08 AM
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With the newer two piece compact cranksets, you'll have to remove that 2005 DA bottom bracket (BB) and replace with an external BB cup set. Some compact cranksets also include an external BB cup set.
Some 50/34's will allow you to change out 34 for a 36 chainring.
Some 50/34's will allow you to change out 34 for a 36 chainring.
Last edited by bike_boy; 03-17-08 at 12:02 PM.
03-17-08, 11:23 AM
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merlin: FSA makes chainrings in all diameters for 110mm BCD.
https://www.universalcycles.com/shopp...&category=2628
https://www.universalcycles.com/shopp...&category=2628
Thanks to all for the answers.
03-17-08, 11:25 AM
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Doubt you have a 38/ 53 . 39/53 is the norm. If by chance that is a 38 it more than likely is not a D/A.
I've been trying to find a couple for the timing chain of my tandem but have been told Shimano doen't make them.
03-17-08, 11:25 AM
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2) There are 3-piece compact cranksets (DS crankarm, NDS crankarm, cartridge BB w/spindle) that are compatible with Octalink-splined bottom brackets. You needn't purchase a new BB just to go compact.
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03-17-08, 11:26 AM
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If "these" refers to the chainrings in my link, you're wrong.
If "these" refers to your cranks, then you need to work on your article usage.
If "these" refers to your cranks, then you need to work on your article usage.
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"When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
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"When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
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