Sram Eagle chainring size

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Sram Eagle chainring size
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flag tsanderson
O+
Posted: Jan 24, 2017 at 21:27 Quote
Hey all,

I'm working on building up a Transition Patrol right now and plan on running the eagle. I was curious what size chainring everyone has been running? I know I want to run more than just the 32T but can't decide between a 34T and 36T. Any help is appreciated, cheers!
flag seanondemand
Posted: Jan 24, 2017 at 22:00 Quote
I mean, you're talking about a 6% difference in gearing ratio, which is pretty small potatoes, you'll be fine either way. I'd go the safe route and go 34.
flag gnarlysipes
O+
Posted: Jan 24, 2017 at 22:01 Quote
I'm not fortunate enough to have an Eagle drivetrain but when I did my first 1x conversion I created a simple table in a spreadsheet that showed gear ratios for various chainring and cog combinations.
flag E-Rawk
O+
Posted: Jan 25, 2017 at 11:29 Quote
You can use this site to compare gearing combos. I've done it when trying to figure out several options in the past.


http://www.ritzelrechner.de/
flag tgent
O+ FL
Posted: Jan 27, 2017 at 9:35 Quote
I put this together a while ago when I got Eagle to compare gear ratios. The results were surprising you gain so much low end on eagle, I went from a 11spd shimano setup with 32 tooth to Eagle with 36 tooth and gained ratio on both ends.

Eagle Chainring Gear Ratio
30: 3.00-0.600
32: 3.20-0.640
34: 3.40-0.680
36: 3.60-0.720

Shimano 11 Spd XT 11-42 Chainring Gear Ratio
30: 2.727-0.714
32: 2.909-0.762
34: 3.091-0.810
36: 3.273-0.857

So my 32t chainring on Shimano had a gear ratio of 2.909-0.762, and Eagle with 36t has a gear ratio of 3.60-0.720, so a 24% gain on the high end and a 5% gain on the low end.
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