To Ultegra Di2 or To DA7900, that is the QUESTION....
08-16-11, 06:50 PM
#27
downhill quickly
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Combine 7900 and Udi
Use the electronic DTrain of the new U Di2 (and superior to that of DA Di2) along with mech 7900 brake and crank. Some nice performance with that combo.
Note for some; Electronic equals IPad...mech equals YellowPad.
Note for some; Electronic equals IPad...mech equals YellowPad.
08-16-11, 06:52 PM
#28
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I forgot to mention... I purchased a 2012 Felt AR3 with Ultegra Di2 for less than I could have purchased a 2011 Felt AR3 with SRAM Red. That made my decision a no brainer.
08-16-11, 08:50 PM
#29
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Please.... Don't compare a piece of crap knock off of a Lupine light's performance with Di2. That's like comparing a Yugo to a Lexus. Really.
08-16-11, 09:20 PM
#30
Chases Dogs for Sport
Did your Magicshine burn continuously for 1,000 miles then, if you never had the presence of mind to look at the charge indicator, give you 50+ miles notice of loss of power, anyway? (that's what Di2 does). If it did, it's not the product's fault you were stranded.
08-17-11, 07:03 AM
#31
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I've got about 2500 miles on my Di2 setup. Except for maybe a commuter bike or something, I'll never have another bike without electronic shifting. I'll be rebuilding a bike this fall that has been stripped down for repair, and I'll be using Ultegra Di2 on it.
(The frame needed repair because I dropped a chain a time or two and gouged it up. I've also broken three derailleur cables on it, and I had just about had enough. That's what made the final decision for me really.)
(The frame needed repair because I dropped a chain a time or two and gouged it up. I've also broken three derailleur cables on it, and I had just about had enough. That's what made the final decision for me really.)
08-17-11, 07:29 AM
#33
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This isnt a real question. I have 2000 miles on DA Di2 and there simply is no comparison to cables. Set it, forget it, never ride cables again.
08-17-11, 07:30 AM
#34
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No, the fact that I had to think about it is the problem, not the details. MS runs for 45 minutes in red mode, so you really don't know what you have left. I have never snapped a cable, stranding me with a FG. At this point I'll just leave this conversation because the Kool-Aid is too potent.
08-17-11, 08:33 AM
#36
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08-17-11, 09:09 AM
#37
Senior Member
This is what I am doing also. I have a 7900 bike now and want to move the groupo to a Pinarello frame. I'll be using a Ui2 FD and RD instead of the 7900 derailleurs.
08-17-11, 10:44 AM
#38
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I'm not familiar with Shimano Sora shifters but I do know first hand my Ultegra setup needed frequent adjustment and was never perfect and I do know numerous other riders in my area that have minor with their Dura Ace/Ultegra/105 setups. When I was trying to decide between Di2 and mechanical, I rode someone's DA7900 setup and it was in clear need of a tune-up.
I can guarantee your front ring doesn't shift nearly as fast or smoothly as a Di2. With my compact setup, 11-23/25 cassette, and local terrain, I'm always in and out of the front ring. As I said, mechanical shifting is fine but electric shifting really is just that bit better. Obviously mechanical has advantages as well, such as lower cost components and larger install base so troubleshooting is easier, etc.
You need to try Di2 before dismissing it though. I was blown away when I did my test ride and it convinced me to go from DA7900 to DA7970.
A light has a very limited battery life in comparison to Di2. A light is something that needs to be charged almost every couple days. Di2 might need to be charged once every other month and it takes two seconds to check the battery level before a ride. Plus if you're really concerned about the battery dying, you can carry a spare one. They are small and very light.
I understand what you're saying as it is one more thing to keep track of, but it is a pretty minor concern. I have to worry more about my cellphone being charged before a ride than Di2.
How is using a well performing product and enjoying it equivalent to being a mindless fanboy? Electric shifting is here to stay whether we like it or not and it does have benefits over a mechanical setup. That doesn't mean the two technologies can't co-exist.
I can guarantee your front ring doesn't shift nearly as fast or smoothly as a Di2. With my compact setup, 11-23/25 cassette, and local terrain, I'm always in and out of the front ring. As I said, mechanical shifting is fine but electric shifting really is just that bit better. Obviously mechanical has advantages as well, such as lower cost components and larger install base so troubleshooting is easier, etc.
You need to try Di2 before dismissing it though. I was blown away when I did my test ride and it convinced me to go from DA7900 to DA7970.
I understand what you're saying as it is one more thing to keep track of, but it is a pretty minor concern. I have to worry more about my cellphone being charged before a ride than Di2.
How is using a well performing product and enjoying it equivalent to being a mindless fanboy? Electric shifting is here to stay whether we like it or not and it does have benefits over a mechanical setup. That doesn't mean the two technologies can't co-exist.
Last edited by Digitalfiend; 08-17-11 at 10:51 AM.
08-17-11, 10:51 AM
#39
The Weird Beard
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I'm not familiar with Shimano Sora shifters but I do know first hand my Ultegra setup needed frequent adjustment and was never perfect and I do know numerous other riders in my area that have minor with their Dura Ace/Ultegra/105 setups. When I was trying to decide between Di2 and mechanical, I rode someone's DA7900 setup and it was in clear need of a tune-up.
I can guarantee your front ring doesn't shift nearly as fast or smoothly as a Di2. With my compact setup, 11-23/25 cassette, and local terrain, I'm always in and out of the front ring. As I said, mechanical shifting is fine but electric shifting really is just that bit better. Obviously mechanical has advantages as well, such as lower cost components and larger install base so troubleshooting is easier, etc.
You need to try Di2 before dismissing it though. I was blown away when I did my test ride and it convinced me to go from DA7900 to DA7970.
A light has a very limited battery life in comparison to Di2. A light is something that needs to be charged almost every couple days. Di2 might need to be charged once every other month and it takes two seconds to check the battery level before a ride. Plus if you're really concerned about the battery dying, you can carry a spare one. They are small and very light.
I understand what you're saying as it is one more thing to keep track of, but it is a pretty minor concern. I have to worry more about my cellphone being charged before a ride than Di2.
I can guarantee your front ring doesn't shift nearly as fast or smoothly as a Di2. With my compact setup, 11-23/25 cassette, and local terrain, I'm always in and out of the front ring. As I said, mechanical shifting is fine but electric shifting really is just that bit better. Obviously mechanical has advantages as well, such as lower cost components and larger install base so troubleshooting is easier, etc.
You need to try Di2 before dismissing it though. I was blown away when I did my test ride and it convinced me to go from DA7900 to DA7970.
A light has a very limited battery life in comparison to Di2. A light is something that needs to be charged almost every couple days. Di2 might need to be charged once every other month and it takes two seconds to check the battery level before a ride. Plus if you're really concerned about the battery dying, you can carry a spare one. They are small and very light.
I understand what you're saying as it is one more thing to keep track of, but it is a pretty minor concern. I have to worry more about my cellphone being charged before a ride than Di2.
08-17-11, 11:15 AM
#41
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08-17-11, 11:35 AM
#42
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Agreed on the cost. It is prohibitive at the moment but that will probably change in 3-5 years once (and if) entry level Tiagra/105 Di2 components become available and SRAM/Campy get their offerings out the door.
08-17-11, 12:31 PM
#44
Portland Fred
Di2 may shift great, but it's not like the good mechanical systems shift like crap. I can't figure out why I'd pay loads of dough to make my bike heavier and shift only marginally better.
The battery doesn't concern me, but I'm interested to know how Di2 holds up to abuse. In real life, I've had Shimano and SRAM shifters fail during rides, and I've had a few shift cables snap (most recently last year on a hilly century -- and yes, I did finish just fine).
When I'm in the market for expensive stuff I don't really need, a power meter strikes me a better investment...
The battery doesn't concern me, but I'm interested to know how Di2 holds up to abuse. In real life, I've had Shimano and SRAM shifters fail during rides, and I've had a few shift cables snap (most recently last year on a hilly century -- and yes, I did finish just fine).
When I'm in the market for expensive stuff I don't really need, a power meter strikes me a better investment...
08-17-11, 03:46 PM
#46
Chases Dogs for Sport
No, the fact that I had to think about it is the problem, not the details. MS runs for 45 minutes in red mode, so you really don't know what you have left. I have never snapped a cable, stranding me with a FG. At this point I'll just leave this conversation because the Kool-Aid is too potent.
Hey, people argued against electric lights in homes for years, and with better arguments than yours against Di2! you're not the first to blindly oppose the march of technical progress. Relax!
08-17-11, 04:09 PM
#48
Portland Fred
08-17-11, 04:36 PM
#49
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If someone gave me Di2 for free, I'll happily join the cult. Until then, I'm too poor to have an engine move my chain for me...
+1 to the idea of using DA7900 hardware with U Di2 FD/RD... read on Velonews that this was recommended- practically cancels the weight penalty of not getting DA Di2, and for a fraction of the cost...
+1 to the idea of using DA7900 hardware with U Di2 FD/RD... read on Velonews that this was recommended- practically cancels the weight penalty of not getting DA Di2, and for a fraction of the cost...
08-17-11, 05:39 PM
#50
Senior Member
Go Ultegra DI2 just so we get the review and pictures on an actual bike.
This is on my list but I want to see how it works and understand it a little better.
j.
This is on my list but I want to see how it works and understand it a little better.
j.