Shimano Electronic - Considering DI2

Discuss light weight issues concerning road bikes & parts.
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photocycler
Posts: 86
Joined: Fri Feb 01, 2013 6:19 pm
Location: Portland, Oregon

by photocycler

Considering going from SRAM to Shimano electronic. Some questions and concerns below I have

1. Does anyone run a mix of DA and Ultegra? I hate the look of the Ultegra cranks and would also prefer the DA brakes

2. I currently run a 12-30 cassette. Currently shimano Electronics go up to a 28t cassette. Concerned it could be difficult in the hills

coppercook62
Posts: 383
Joined: Mon Nov 15, 2010 7:58 am

by coppercook62

Buddy runs all Ultegra di2 with 7900 cranks and brakes

by Weenie


dha
Posts: 163
Joined: Tue Jun 12, 2012 4:40 pm

by dha

Ultegra di2 goes up to 28 yes.

MisterNoChain
Posts: 122
Joined: Sun Nov 13, 2011 9:29 pm
Location: Belgium

by MisterNoChain

I have put a 30 on an Ultegra DI2, no problems at all.

dha
Posts: 163
Joined: Tue Jun 12, 2012 4:40 pm

by dha

Had heard it goes to 30, but not seen it in use. I assume it's 11-30 with a compact up front?

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Devon
Posts: 775
Joined: Fri Apr 12, 2013 1:19 pm
Location: Oxford, England

by Devon

What chainrings do you use? I assume if you are getting Di2 you race? You have no need for more than 25 (in my eyes) for racing. I use a 12-22 with 39-53 for all my training/racing/commuting however could see the benefit of up to 25. I highly doubt you'd need to go up to a 30.

There are no reasons Ultegra and DA shouldn't mix that I know of.
Campagnolo; because it's a bicycle, not a fishing rod.

Stoo
Posts: 327
Joined: Thu May 23, 2013 9:22 am
Location: Warwick, UK

by Stoo

Sorry to jump on the thread here, but I#m going to be building up a bike very soon and I'm looking for the best place to buy a Dura Ace Di2 Groupset (10spd)

Internal wiring with Di2 mount battery.
Struggling.
Any suggestions people?
'18 Giant Trinity Pro TT - DA9070 - Rotor 3D+ P2Max - Zipp 900T/HED Jet 9+
'18 Giant TCR Advanced Pro 1 - R8000 - QuarQ DZero - SLR1
'16 Genesis Equilibrium - U6800 - FSA SRM - WH6800
'13 Giant Trinity Composite - U6800 - QuarQ DZero

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TrekUk
Shop Owner
Posts: 353
Joined: Mon Jan 14, 2013 5:45 pm
Location: UK

by TrekUk

DA9000 Di2 is what you want if your going to do it right.
Madone Five Series 2013
Shimano Dura-Ace 9000
Mavic Cosmic SLE 2013

Geoff
Posts: 5093
Joined: Sat Dec 13, 2003 2:25 am
Location: Canada

by Geoff

The chainring spacing is the same for both groups.

MisterNoChain
Posts: 122
Joined: Sun Nov 13, 2011 9:29 pm
Location: Belgium

by MisterNoChain

dha wrote:Had heard it goes to 30, but not seen it in use. I assume it's 11-30 with a compact up front?

Yes, with a compact it was.

boots2000
Posts: 1423
Joined: Mon Oct 15, 2007 9:28 pm

by boots2000

I have a buddy that got the KI2 rear derailleur conversion from K-edge.
He runs an 11-32 and sometimes an 11-36 with his DI2.
I would suggest this if you want DI2 and low gears.
He runs a 50/34 up front. He is strong too- just likes low gears and also
likes to keep it in big ring in races.

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eliflap-scalpel
Posts: 961
Joined: Sun May 25, 2008 10:12 pm
Location: italy
Contact:

by eliflap-scalpel

with 10T pulleys you can run a 30T cog ...

without expensive K-Edge cage
http://eliflap.it/

by Weenie


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