Back by popular demand, the general all-things Road forum!
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DaveS
- Posts: 3921
- Joined: Fri Mar 24, 2006 1:26 pm
- Location: Loveland Colorado
by DaveS on Wed Dec 01, 2021 2:45 pm
Shimano grx cranks work with the flat top chain. 48/31 or 46/30 chain rings are available to mate with a 10-36 cassette. I have no doubt that shimano 12 cranks will work too, but a 50/34 creates a big top gear with a 10T sprocket.
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ccie6872
- Posts: 363
- Joined: Wed Jul 15, 2020 10:46 pm
by ccie6872 on Wed Dec 01, 2021 3:03 pm
DaveS wrote: ↑Wed Dec 01, 2021 2:45 pm
Shimano grx cranks work with the flat top chain. 48/31 or 46/30 chain rings are available to mate with a 10-36 cassette. I have no doubt that shimano 12 cranks will work too, but a 50/34 creates a big top gear with a 10T sprocket.
Do you think a 9200 FD would work with 46/30 GRX (flat top chain)?
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ms6073
- Posts: 4289
- Joined: Fri Jul 23, 2004 8:24 pm
- Location: Houston, Texas
by ms6073 on Wed Dec 01, 2021 4:40 pm
stevec1975 wrote: ↑Wed Dec 01, 2021 9:42 am
Always preferred the DLC versions over the Shimano chains (and yes, I know they are both made by KMC)
Not a direct answer, but was running the KMC 11spd DLC chain on our road bikes with R9150/70 and AB oval rings as well as our gravel bikes with R8050/70 and Wickerks round chainring rings and swapped to the Shimano chain late spring. Thus far I have found the Shimano chain t be much quieter, better shifting, and best of all the finish of the chain remains constant, unlike the KMC chains in which the DLC coating which wore down on the links and rollers.
- Michael
"People should stop expecting normal from me... seriously, we all know it's never going to happen"
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ooo
- Posts: 1590
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Gavin929
- Posts: 72
- Joined: Sun Nov 27, 2011 4:50 am
by Gavin929 on Thu Dec 02, 2021 8:32 pm
Just installed the group on my bike. As far as I can tell you can no longer enable the ability to use the 11 and 12 tooth rear cogs while in the small ring. I know this is cross chaining and increases drag and wear on the parts. Does anyone know if there is a work around like there was on the 9100 di2 where you just change your chainring size and it allows you to enable it?
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pdlpsher1
- Posts: 4016
- Joined: Thu Jul 19, 2012 6:09 pm
- Location: CO
by pdlpsher1 on Thu Dec 02, 2021 10:50 pm
There used to be an option on the 9100 to change chainring and cassette sizes but last time I checked Shimano removed those options. I'd like to see a lock out on the big-big combo but I assume it's not there for 9200?
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BdaGhisallo
- Posts: 3261
- Joined: Wed Mar 17, 2004 1:38 pm
by BdaGhisallo on Thu Dec 02, 2021 11:27 pm
Gavin929 wrote: ↑Thu Dec 02, 2021 8:32 pm
Just installed the group on my bike. As far as I can tell you can no longer enable the ability to use the 11 and 12 tooth rear cogs while in the small ring. I know this is cross chaining and increases drag and wear on the parts. Does anyone know if there is a work around like there was on the 9100 di2 where you just change your chainring size and it allows you to enable it?
For 11sp, in addition to specifying the right sized chainrings, you also had to deselect 'gear control'. Is there that option in the software for 9270?
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Gavin929
- Posts: 72
- Joined: Sun Nov 27, 2011 4:50 am
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FlatlandClimber
- Posts: 2491
- Joined: Tue Mar 31, 2020 3:37 pm
by FlatlandClimber on Fri Dec 03, 2021 10:38 am
ooo wrote: ↑Fri Dec 03, 2021 9:24 am
r9200 is 22 speed group, if you want 24 speed you need to use campy
What do you mean by that?
Cervelo P5 Disc (2021) 9.1kg
Factor Ostro Gravel (2023) 8.0kg
S-Works SL8 (2023) 6.3kg
*weights are race ready, size 58/L.
Sold: Venge, S5 Disc, Roubaix Team, Open WI.DE, Émonda, Shiv TT, Crux, Aethos, SL7
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ooo
- Posts: 1590
- Joined: Sat May 21, 2016 12:59 pm
by ooo on Fri Dec 03, 2021 10:42 am
12+10=22 - number of gears you get on new electronic-only dura-ace r9200
11+11=22 - number of gears you get on old mechanical dura-ace r9100
12+12=24 - number of gears you get on mechanical campagnolo
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