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29er / 11sp cassette/RD compatibility question
« on: October 06, 2016, 04:22:46 PM »
I would like to run a 11-46T cassette (SunRace), but need to pick a RD that would work with it.
On the product page, Shimano claims that the 11sp XTR and XT RDs can only handle 40T at the most. Interestingly, they released their own 11-46T cassette and claim that it is compatible with their XT and XTR drivetrains. Would I need to do any modifications to the derailleurs to handle a 46T rear cog?
Similar question on SRAM offerings. All of their 11sp RDs are listed as 10-42T compatible. Would they be able to handle a 46T cog without some kind of mods? Anyone have experience?
As a data point, WolfTooth claims their 49T cassette expander will work with SRAM 11sp RDs.
http://www.wolftoothcomponents.com/collections/cassette-cogs/products/49t-gc-cog-for-sram-and-sunrace
Is this just a case of manufacturers (Shimano and SRAM) being overly conservative and/or protective of their own product lineups?
On the product page, Shimano claims that the 11sp XTR and XT RDs can only handle 40T at the most. Interestingly, they released their own 11-46T cassette and claim that it is compatible with their XT and XTR drivetrains. Would I need to do any modifications to the derailleurs to handle a 46T rear cog?
Similar question on SRAM offerings. All of their 11sp RDs are listed as 10-42T compatible. Would they be able to handle a 46T cog without some kind of mods? Anyone have experience?
As a data point, WolfTooth claims their 49T cassette expander will work with SRAM 11sp RDs.
http://www.wolftoothcomponents.com/collections/cassette-cogs/products/49t-gc-cog-for-sram-and-sunrace
Is this just a case of manufacturers (Shimano and SRAM) being overly conservative and/or protective of their own product lineups?