Shimano GRX RX400 vs RX600 groupsets Components ... 114 and 130 grams for F/R 810 versus 109 and 124 grams F/R for the 400’s. Both, however, will be available in 1x and 2x configurations. You might get some hanging chain on the small-small combos, but that is a minor issue.My sentiments exactly. Purposefully leaving the top-tier Dura Ace free to evolve to 12-speed next season. Pedaled at 90rpm it results in a speed of 28 mph. With the new xtr, good luck shifting 3 cogs at a time, from 3 or 4th gear to the top 51, good luck with that, even with shimano. A 1x with that much range has large gaps and poor efficiency at the faster end of the cassette.Had this been announced in 2015 it would have been huge news. The Chain siltec coating is an example, as is the type of fiber used in the plastic components, and the quality of bushings/bearings in the rear DRs.
The 600- and 400-level groups share the same cranks but with different chain rings. And for Di2, there’s a revised brake lever axis for better braking from the hoods. Shimano expects mechanical groups to be available by June or July with Di2 following in August.Chainline issues are not fun. … I hope you don’t work in marketing.“Even a 42×14 at 80rpm works out to nearly 20mph which is a pretty fast clip on most gravel surfaces.” There are many different types of gravel surfaces, some really rough, some nearly as smooth as asphalt. Still experimenting, just swapped the threaded 11 for a 12, curious to see if I miss it.If i have an old CX bike with Tiagra 2×10 speed (4600 series I believe, the silver ones) would this rear derailleur work with my current shifters? I still don’t understand how in 2019 Sram can’t make a hydraulic brake that can be bled without needing 5 arms and environmentally unfriendly corrosive brake fluid. Interesting because with a typical 700×40 gravel tire a 42×11 gear pedaled at 80 rpm results in a speed in excess of 24 mph. However, I’d still love to see the return of a triple in a group like this. 48/36/26 makes much more sense to me than 48/31. And guess what part two; you could back pedal without a chain derrailing!!!! Because ShimanoNow, after years of secret research and development, Shimano is joining in on the gravel party in a big way. These feature a wider 21.6mm internal width with a tubeless ready design, and hubs built around the 12mm e-thru axle standard.I was really disappointed with the 2x gearing options on Force AXS. Kudos to them for some thoughtful designs.Must love how sram sends their marketing people to comment here lolWHAT IF I AM ON PAVEMENT AND GRAVEL IN THE SAME RIDE!! Modulation for days and a super easy bleed.Ok ok stop I can’t stop laughing here. Did Bike Rumor miss this?11-12-13-14-15-16-17-19-22-25-29-34 – even the gap between 29t and 34t is smaller than Shimano’s gap between 11t and 13t.> even the gap between 29t and 34t is smaller than Shimano’s gap between 11t and 13tIn terms of gearing, Shimano found that riders were mostly happy with the high gearing most groups offered, but almost everyone wanted the option of lower gearing as well.
We have discovered the most beneficial Shimano Grx 400 2x10 … You’d want a bigger chainring, too- but there are plenty of 110BCD 44s and 46es for your current cranks.The 105 and Ultegra groups are very familiar to users, Shimano should have made gravel variants using those names. !Bikerumor.com is the world’s largest cycling tech blog. Not everyone rides exactly the same.The RD-RX800 (mech) and RD-RX805 (Di2) will remain in the line as a more all-road option that complements the current Ultegra road group and sized to work with standard road cassettes. I guess I will continue to just wait for 12 speed XTR di2 with my R785 levers for my 1x gravel race bike, but I am so close to giving up on Shimano. I eventually started using an MTB front d.The other lever options keep the same (current) mechanical/hydraulic hood body and pivot placement, so you’ve gotta go Di2 if you want the improved braking ergonomics. I may give up and switch anyway.I pointed that out on a thread somewhere.