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Old 05-09-21, 07:15 PM
Method to My Madness
Join Date: Nov 2020
Location: Orange County, California
Posts: 584

Bikes: Cannondale Synapse, Trek FX 2

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Originally Posted by Davidb67 View Post
Iím considering a Frankenstein-cassette - Shimano 11sp r8000 Ultegra, to go with 52/36 sub-compact crankset.
my thoughts are to take a 12-25T cassette, and an 11-32T.
like the idea of single tooth increments from the 12 so 12-13-14-15-16 and was wondering if using a 17 but then going to 20-22-25-28-32 - would the 3-tooth strep between 17-20 be too big? - I note of course that 22-25-28 are also 3 tooth increments, with final 28-32 being 4T difference.

I could use the 18T instead which would be 16-18-20, but I have a feeling that 17T would come in handy for my riding/cadence/road-speed.
itís for a road bike, variety of terrain, some quite lumpy hence the desire to go to 32T.

appreciate any thoughts.
I have tried combining two Ultegra cassettes (11-28 and 12-25) to make a 12-28 cassette, and it did not work out even though I took care to match the cog markings specified in the Shimano Dealer Manual for the Dura-Ace 12-28 cassette.

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