105 2x12 - R7170 (R7150) / R7120 (R7100) - di2 / mechanical (MY2024)

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harriot10
Posts: 4
Joined: Sun Mar 12, 2023 8:35 pm

by harriot10

Is the FC R7000 compatible with 105 di2 12 speed? I know they make a FC R7100, but rather not spend money on another crankset/power meter.

Ritxis
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by Ritxis

harriot10 wrote:
Thu Mar 16, 2023 2:13 am
Is the FC R7000 compatible with 105 di2 12 speed? I know they make a FC R7100, but rather not spend money on another crankset/power meter.
Yes

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frnchy
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Joined: Sun Feb 07, 2021 5:30 am
Location: CO

by frnchy

harriot10 wrote:
Thu Mar 16, 2023 2:13 am
Is the FC R7000 compatible with 105 di2 12 speed? I know they make a FC R7100, but rather not spend money on another crankset/power meter.
Yup, I'm using this right now with a 105 12 speed chain. Zero problems.

harriot10
Posts: 4
Joined: Sun Mar 12, 2023 8:35 pm

by harriot10

frnchy wrote:
Thu Mar 16, 2023 11:21 pm
harriot10 wrote:
Thu Mar 16, 2023 2:13 am
Is the FC R7000 compatible with 105 di2 12 speed? I know they make a FC R7100, but rather not spend money on another crankset/power meter.
Yup, I'm using this right now with a 105 12 speed chain. Zero problems.
Thanks, glad to hear. Getting mixed responses from LBS. My plan is to reuse my FC R7000 crankset and calipers from my 105 mechanical groupset.

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ultimobici
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by ultimobici

harriot10 wrote:
Fri Mar 17, 2023 10:55 am
frnchy wrote:
Thu Mar 16, 2023 11:21 pm
harriot10 wrote:
Thu Mar 16, 2023 2:13 am
Is the FC R7000 compatible with 105 di2 12 speed? I know they make a FC R7100, but rather not spend money on another crankset/power meter.
Yup, I'm using this right now with a 105 12 speed chain. Zero problems.
Thanks, glad to hear. Getting mixed responses from LBS. My plan is to reuse my FC R7000 crankset and calipers from my 105 mechanical groupset.
You will do. They have to do that these days, because of potential blowback when it goes wrong.

man1ac
Posts: 63
Joined: Mon Apr 11, 2022 4:58 pm

by man1ac

Nevermind. Unfriendly answers 4tw.
Last edited by man1ac on Sat Mar 25, 2023 12:42 pm, edited 1 time in total.

TobinHatesYou
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by TobinHatesYou

Ask your GF, not us.

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ultimobici
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by ultimobici

TobinHatesYou wrote:
Sat Mar 25, 2023 8:09 am
Ask your GF, not us.
This. Its's her bike, not yours.

man1ac
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Joined: Mon Apr 11, 2022 4:58 pm

by man1ac

Great answers. Thanks.
Just write C+1 next time when you wont answer useful.

Edopizzo
Posts: 50
Joined: Tue Jun 07, 2022 6:47 pm

by Edopizzo

Hello, is there a definitve answer about if the 105 7100 is Hyperglide+? By looking at the pictures it looks exactly like the Ultegra one with all the typical Hyperglide+ machining. The chain itself would obviously be hyperglide+ because on the mtb side everything is HG+. I might order them both and then send them back for comparison

Ritxis
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Location: San Sebastian

by Ritxis

Edopizzo wrote:
Tue Apr 04, 2023 10:30 am
Hello, is there a definitve answer about if the 105 7100 is Hyperglide+? By looking at the pictures it looks exactly like the Ultegra one with all the typical Hyperglide+ machining. The chain itself would obviously be hyperglide+ because on the mtb side everything is HG+. I might order them both and then send them back for comparison
according to Shimano specifications, 105 R7100 cassettes are HG no HG+

Edopizzo
Posts: 50
Joined: Tue Jun 07, 2022 6:47 pm

by Edopizzo

Ritxis wrote:
Tue Apr 04, 2023 10:48 am


according to Shimano specifications, 105 R7100 cassettes are HG no HG+
Yes, obviously. However they do appear the same (as were the previous generations) and the 105's are much cheaper and weigh the same except for the steel lockring. I was wondering if I'm technically missing hyperglide+ by going 105 or if it's the same

maurice1
Posts: 143
Joined: Mon Dec 19, 2022 12:51 pm
Location: Jura

by maurice1

Any word on the cassette options? Since the long cage on 11s were rated up to 11-34 but could clear 11-40, can I assume the mech rated for 11-36 can clear 11-42?

satanas
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by satanas

^ I'd like to know too, but I don't think anyone has seen actual samples yet, much less had a chance to play with them. There is also a dearth of 12 speed cassettes with >36T, but <46T; Shimano do 10-45, Sunshine do 11-40/42/(46) and Ingrid do 11-44 but that's about it other than XPLR at 10-44. There's no reason why something else couldn't be made, but companies tend to be run by ex-racers, most of whom have never used low gears and don't see any reason why they should exist...

I was hoping Shimano might actually offer something useful for bikepacking with the next round of GRX, but that's looking very unlikely now. The best hope IMHO is that something can be cobbled together out of 105 mechanical, GRX, or something else but we'll have to wait and see what the actual capacities are after things make it into the marketplace. Unfortunately, 2x with low gears seems to be unfashionable at present.

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Sock3t
Posts: 448
Joined: Mon Jun 11, 2018 2:20 am

by Sock3t

Sp, can a R7120 shifter drive a 9100 derailleur or will I need that, as well, to go 12 speed mechanical shimano?

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