DA 9070 RD + 30T?
Moderator: robbosmans
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Yes I run it with my Parlee z5sli
Hardly any tweaking at all.. Adjust bscrew because I was running 11/26 before... Now my bike runs 11/26-28-30 no prob. All SRAM 1190s
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Hardly any tweaking at all.. Adjust bscrew because I was running 11/26 before... Now my bike runs 11/26-28-30 no prob. All SRAM 1190s
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2024 BMC TeamMachine R
2018 BMC TImeMachine Road
2002 Moots Compact-SL
2019 Parlee Z0XD - "classified"
2023 Pivot E-Vault
2018 BMC TImeMachine Road
2002 Moots Compact-SL
2019 Parlee Z0XD - "classified"
2023 Pivot E-Vault
Some tandems are running low gearing in the back with 9070. Santana cycles has commissioned a third party to make a custom mid cage to safely run this combo and more. The upgrade cage could be sold as an accessory by Santana. If not perhaps they will sell you a new modified RD.
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I have a 6870 Ultegra DI2 with Rotor 36/52, do you think a 11-30 will also fit for me ?
- wheelsONfire
- Posts: 6294
- Joined: Mon Jul 07, 2014 8:15 am
- Location: NorthEU
muntos wrote:I have a 6870 Ultegra DI2 with Rotor 36/52, do you think a 11-30 will also fit for me ?
If you use 6870 with a medium cage?
Yes, that works with minimum 28 and maximum 32.
Stock with no modifications!
Bikes:
Ax Lightness Vial EVO Race (2019.01.03)
Open *UP* (2016.04.14)
Paduano Racing Fidia (kind of shelved)
Ex bike; Vial EVO D, Vial EVO Ultra, Scott Foil, Paduano ti bike.
Ax Lightness Vial EVO Race (2019.01.03)
Open *UP* (2016.04.14)
Paduano Racing Fidia (kind of shelved)
Ex bike; Vial EVO D, Vial EVO Ultra, Scott Foil, Paduano ti bike.
wheelsONfire wrote:muntos wrote:I have a 6870 Ultegra DI2 with Rotor 36/52, do you think a 11-30 will also fit for me ?
If you use 6870 with a medium cage?
Yes, that works with minimum 28 and maximum 32.
Stock with no modifications!
No, with short cage...
Ritxis wrote:I have used rd 6870 (short cage) with 11-32 cassette, no problem
Hmmm, then what good for the medium cage derailleur... ?
To those who said it works, please post pictures of the small gear/ small chainring and the large gear/ large chainring combinations. The mid-cage is designed to take up the chain slacks in the extreme cross-chain gear combos. Without the mid cage the chain will be either too long or too short in the extreme cross-chain gear combos.
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I highly doubt you can run a 32 along with the large chainring up front, and a 11 with the small chainring up front. To get 11-32 gearing you'll need a mid sized cage to take up the chain slack. Here are two pics of the Ultegra Di2 mid-cage with the 11-32. There's a good reason why you need a different RD when using 11-32.
pdlpsher1 wrote:I highly doubt you can run a 32 along with the large chainring up front, and a 11 with the small chainring up front. To get 11-32 gearing you'll need a mid sized cage to take up the chain slack. Here are two pics of the Ultegra Di2 mid-cage with the 11-32. There's a good reason why you need a different RD when using 11-32.
short chain, you can add any link, would not have any problem in using this configuration
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