Wide Range Drop Bar Options
10-14-21, 03:27 PM
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GRX 812 is 1x, has a capacity of 31 which is eaten up by the cogs. GRX 810 is for doubles, and has a capacity of 40 (so 34-11 allows 17t chainring diff max). Yes, Shimano is conservative and some report 810 doing 42t, others are not so lucky. YMMV.
10-14-21, 04:20 PM
#27
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On the low end, I must have 19 inches or less. On the high end 95 inches or more (I might be able to go lower by a touch). I want mechanical disc brakes and do not want bar end shifters. Don't care if it's 10, 11 or 12 speed.
A 1x 38 crank with an 11-50 cassette puts me VERY close to where I want to be. It gives me just over 19" the low side and just under 95" on the high side. If I can't come up with a 2X solution, I'll go this route if I can find compatible components. I can go Microshift XLE 1x11 dynasys drop bar shifters. I'd like to be able to go with higher than Deore level RD, but Shimano doesn't make one that is rated for a 50 tooth cassette. Anyone's gravel or CX crankset should give the right chainline. Problem solved?
A 1x 38 crank with an 11-50 cassette puts me VERY close to where I want to be. It gives me just over 19" the low side and just under 95" on the high side. If I can't come up with a 2X solution, I'll go this route if I can find compatible components. I can go Microshift XLE 1x11 dynasys drop bar shifters. I'd like to be able to go with higher than Deore level RD, but Shimano doesn't make one that is rated for a 50 tooth cassette. Anyone's gravel or CX crankset should give the right chainline. Problem solved?
10-14-21, 04:28 PM
#28
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Originally Posted by Iride01
I'm mainly just not sure you are going to find a 11-40 rear that works with STI's. Even Shimano's GRX says that the STI's in that group are limited to road type rear DR's which currently have a 34 tooth max. The 11-40 cassette in the GRX group requires a mountain bike rear DR and that will require something other than a STI on your drop bars.
The RD-RX810 intended for multi-ring setups is only spec'd for up to an 11-34, but I know people using it with 11-40 cassettes with reasonable results.
Another option is to use an 11-speed MTB derailleur and a Wolf Tooth Tanpan with 11-speed road-pull shifters.
10-14-21, 04:33 PM
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Originally Posted by HTupolev
The 11-40 in the GRX group is designed to pair with the RD-RX812, which is a 1x-targeted rear derailleur for 11-speed road pull. It does not use a mountain bike rear derailleur.
The RD-RX810 intended for multi-ring setups is only spec'd for up to an 11-34, but I know people using it with 11-40 cassettes with reasonable results.
Another option is to use an 11-speed MTB derailleur and a Wolf Tooth Tanpan with 11-speed road-pull shifters.
The RD-RX810 intended for multi-ring setups is only spec'd for up to an 11-34, but I know people using it with 11-40 cassettes with reasonable results.
Another option is to use an 11-speed MTB derailleur and a Wolf Tooth Tanpan with 11-speed road-pull shifters.
10-14-21, 04:53 PM
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Originally Posted by HTupolev
The 11-40 in the GRX group is designed to pair with the RD-RX812, which is a 1x-targeted rear derailleur for 11-speed road pull. It does not use a mountain bike rear derailleur.
The RD-RX810 intended for multi-ring setups is only spec'd for up to an 11-34, but I know people using it with 11-40 cassettes with reasonable results.
Another option is to use an 11-speed MTB derailleur and a Wolf Tooth Tanpan with 11-speed road-pull shifters.
The RD-RX810 intended for multi-ring setups is only spec'd for up to an 11-34, but I know people using it with 11-40 cassettes with reasonable results.
Another option is to use an 11-speed MTB derailleur and a Wolf Tooth Tanpan with 11-speed road-pull shifters.
10-14-21, 05:07 PM
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Originally Posted by DorkDisk
GRX 812 is 1x, has a capacity of 31 which is eaten up by the cogs. GRX 810 is for doubles, and has a capacity of 40 (so 34-11 allows 17t chainring diff max). Yes, Shimano is conservative and some report 810 doing 42t, others are not so lucky. YMMV.
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10-14-21, 05:18 PM
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Originally Posted by Paul Barnard
Great idea. I normally don't butt in unless I feel like I can add value to a discussion.
10-14-21, 05:22 PM
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Originally Posted by DorkDisk
GRX 812 is 1x, has a capacity of 31 which is eaten up by the cogs. GRX 810 is for doubles, and has a capacity of 40 (so 34-11 allows 17t chainring diff max). Yes, Shimano is conservative and some report 810 doing 42t, others are not so lucky. YMMV.
10-14-21, 10:57 PM
#34
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You could meet all your requiresments (aside from XD driver, which you can certainly get on a non-boost hub) with an e*thirteen 9-50 cassette and 36t chainring. This could work with Sram eTap AXS road shifters and Eagle RD, or use https://ratiotechnology.com/product/...d-upgrade-kit/ with a 11 speed Sram shifter and a 12 Speed Sram Eagle derailleur.
https://www.renehersecycles.com/shop...double-cranks/ is also a beautiful, also crazy expensive option for 44/28 double, though its out of stock for that configuration right now.
https://www.renehersecycles.com/shop...double-cranks/ is also a beautiful, also crazy expensive option for 44/28 double, though its out of stock for that configuration right now.
10-15-21, 06:50 AM
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Originally Posted by cpach
You could meet all your requiresments (aside from XD driver, which you can certainly get on a non-boost hub) with an e*thirteen 9-50 cassette and 36t chainring. This could work with Sram eTap AXS road shifters and Eagle RD, or use https://ratiotechnology.com/product/...d-upgrade-kit/ with a 11 speed Sram shifter and a 12 Speed Sram Eagle derailleur.
https://www.renehersecycles.com/shop...double-cranks/ is also a beautiful, also crazy expensive option for 44/28 double, though its out of stock for that configuration right now.
https://www.renehersecycles.com/shop...double-cranks/ is also a beautiful, also crazy expensive option for 44/28 double, though its out of stock for that configuration right now.
I appreciate all of the feedback folks. I have looked into everything that has been suggested. I welcome any additional feedback anyone may have.
10-15-21, 11:43 AM
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Originally Posted by cpach
https://www.renehersecycles.com/shop...double-cranks/ is also a beautiful, also crazy expensive option for 44/28 double, though its out of stock for that configuration right now.
I have a 42/28 with plain chainrings, and really like it. Expensive, but a really well-executed small BCD crank with lots of options.
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10-15-21, 06:58 PM
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I may have most of this figured out. Correct me if I have it screwed up.
Gevenalle 2x11 drop bar shifters for Shimano Dynasys. Front shifter is friction. https://www.gevenalle.com/product/gx/
GRX 2x11 46/30 crank.
GRX 2X FD (Lynskey is shipping the bike with the 2X GRX sruff, so I know it works out.)
XTR long cage Dynasys RD
XT 11-42 cassette
GRX stuff is all but impossible to find now, but I am not in a hurry.
Gevenalle 2x11 drop bar shifters for Shimano Dynasys. Front shifter is friction. https://www.gevenalle.com/product/gx/
GRX 2x11 46/30 crank.
GRX 2X FD (Lynskey is shipping the bike with the 2X GRX sruff, so I know it works out.)
XTR long cage Dynasys RD
XT 11-42 cassette
GRX stuff is all but impossible to find now, but I am not in a hurry.
