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PostPosted: Fri Dec 16, 2011 5:15 pm 
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Joined: Sat Apr 03, 2010 11:05 pm
Posts: 341
WeightySteve wrote:
Pretty good comparison on the front mech...

http://www.youtube.com/watch?v=mpGGrYs62CU" onclick="window.open(this.href);return false;


Doesn't look any slower to me.


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PostPosted: Fri Dec 16, 2011 6:10 pm 
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Joined: Wed Dec 14, 2011 4:37 pm
Posts: 87
That video shows....nothing?


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PostPosted: Sat Dec 17, 2011 12:49 pm 
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Joined: Mon Jan 24, 2005 9:41 pm
Posts: 761
Location: Uppsala, Sweden
Chiva wrote:
WeightySteve wrote:
Pretty good comparison on the front mech...

http://www.youtube.com/watch?v=mpGGrYs62CU" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;


Doesn't look any slower to me.



we don´t talk about seconds in difference :D so hard to se that you should be able to se the difference :D


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PostPosted: Sat Dec 17, 2011 12:58 pm 
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Joined: Sun Sep 05, 2010 11:30 pm
Posts: 366
If we could reach a consensus before I have to press buy, that would be great. :D


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PostPosted: Sat Dec 17, 2011 3:31 pm 
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Joined: Wed Dec 14, 2011 4:37 pm
Posts: 87
If you haven't ridden D/A Di2, you'll never know the difference. Ultegra still will never miss a shift.


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PostPosted: Sat Dec 17, 2011 4:36 pm 
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Joined: Mon Jul 18, 2011 3:33 pm
Posts: 93
Location: Portsmouth UK
i have both, in real world use, not any difference, you change gear, it happens..simple!

but as far as quality is concerned..obviously the DA is better, rear mech is smaller. YES the new wiring harness is ver good, but both of mine are internal so makes no odds really.

weight, you wouldn't notice a difference on the bikes.

one thing for certain is the DA is faster that the ultegra, not by miles and hardly noticeable, but faster all the same..but what do you expect! if they released the ultegra and it was faster and better than DA then they would be stuck with loads of units they couldn't sell!

if i was in your shoes, and had the cash, id go DA, you already have the callipers and chain set (I presume?) so only the elecs would need upgrading. mixing DA and ULT just looks weird lol.

_________________
"Heroes do not die, they re-load"


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PostPosted: Wed Nov 21, 2012 9:06 am 
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Joined: Fri May 22, 2009 4:42 am
Posts: 316
Location: Great southern land
does the ultegra wiring harness work with the dura ace di2 components?


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PostPosted: Wed Nov 21, 2012 3:48 pm 
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Joined: Tue Jul 18, 2006 7:27 am
Posts: 57
The 9070 series Dura Ace Di2 uses the same E-Tube wire system as the 6770 series Ultegra Di2. So if you want to upgrade your Ultegra Di2 components to new DA Di2, you can leave the wires in the frame. The old DA Di2 uses a different cable system and is not compatible with Ultegra or the new DA.


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PostPosted: Wed Nov 21, 2012 11:26 pm 
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Shop Wrench

Joined: Sun Sep 05, 2010 9:31 am
Posts: 164
Location: Belgian border
I must say that I didn't noticed any difference in front shifting speed between DA Di2 and U Di2, but could be me.

Comparing Ultegra and Dura-ace Di2.. Hey, if you have the money. Go for DA. Although I rather spend some more money on nice wheels and tubs instead.

Just want to add: When people walk into the shop they often make a comparison between mechanical 7900 Dura-ace and Ultegra Di2, as it's basically the same price. I cant believe how many people choose the mechanical DA. The Di2 groups, both of them, are so much better in reliability and performance.


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PostPosted: Thu Nov 22, 2012 3:34 am 
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Joined: Wed Jan 10, 2007 10:56 pm
Posts: 1175
Location: Canada
There is updated firmware for all of the ultegra di2 components. I could be wrong, but when I updated them it seemed that shifting was a bit smoother and faster.


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PostPosted: Thu Nov 22, 2012 5:16 am 
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Joined: Sun Apr 24, 2011 2:21 am
Posts: 344
roselend wrote:

Just want to add: When people walk into the shop they often make a comparison between mechanical 7900 Dura-ace and Ultegra Di2, as it's basically the same price. I cant believe how many people choose the mechanical DA. The Di2 groups, both of them, are so much better in reliability and performance.



There are a LOT of people that simply do not like electronic - I'm one of them. I don't like the way it shifts, especially with winter gloves. I don't have any reliability issues with my mechanical, once the cables have stretched it is good for thousands of km.

For CX or XC I can see the reliability concerns due to mud.


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PostPosted: Thu Nov 22, 2012 9:41 am 
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Joined: Fri Oct 21, 2005 4:08 am
Posts: 270
yep, the latest firmware seems to speed up the shifting


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PostPosted: Thu Nov 22, 2012 12:27 pm 
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Joined: Sun Jul 11, 2010 3:03 am
Posts: 33
What do I need to update te firm ware


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PostPosted: Thu Nov 22, 2012 5:59 pm 
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Joined: Wed Jan 10, 2007 10:56 pm
Posts: 1175
Location: Canada
You need the Shimano E tube system checker SM-PCE1

http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/SM/EV-SM-PCE1-3138_v1_m56577569830781074.pdf


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