I had to replace all of my drive train due to wearing it out after 5 yrs. I used 10 for all but the cranks & bb to save some bucks. I have bar end shifters but can't believe how tight 10 speed is. I have noticed a really big difference over my 9 which I thought was quite nice. Used DA on both. I use a 11-25 cassette I made from a 12-25. I put it on about a week before the Auburn Half and then yesterday put 152 with 7200 + on it along with a few other long rides in between so its been through the rigours. It's great.

Barb

Actually, I've always considered DA to be only a nominal upgrade, considering the overall quality of the Ultegra group. The number of world class athletes I've seen on Ultegra makes it hard to justify the DA stuff, for a mop like me.

Yes, unfortunately there is a significant difference. I went from Ultegra 9 on one bike and Campy Record 9 on another to DA 10. Wow. Especially front shifting which feels just like rear shifting now.

I was initially wondering if I was just getting the "latest" when I put it on my road bike, but there really is a diff - at least they made it somewhat worth the money. Campy stuff doesn't seem to change as much (not a bad thing at all mid you) and is probably better on road bike you plan on keeping for a while

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Fatigue is biochemical, not biomechanical.
- Andrew Coggan, PhD

"Wow! I did two 50mi rides this weekend and the first was on my Orbea w/ DA 9"

I LOVE the people on this site. They have better access to top end equipment than some professional road cyclists and triathletes!

Fleck

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Steve Fleck @stevefleck | Blog

[reply]"Wow! I did two 50mi rides this weekend and the first was on my Orbea w/ DA 9"

I LOVE the people on this site. They have better access to top end equipment than some professional road cyclists and triathletes!

Fleck[/reply]

I hope you mean that in a *nice* way. After three degrees and a 4yr residency I better get to enjoy life at least a little...;-)
Cheers,
HC

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Holden Cain, ObGyn..."People pulling people out of people"

Absolutly!

Fleck

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Steve Fleck @stevefleck | Blog

The problem with this is most people think the only difference is one cog. As you have experienced, the throw of the lever is substantially smaller with 10 speed than 9 speed. On an STI equipped bike that makes a lot of difference. With bar-end shifters, less so since the shift lever itself is so much smaller.

In general, I think Shimano would have done well to completely or partially re-name the group, like "Dura-Ace SL" or something like that.

If you look at the number of posts on here where people say, "I don't know what the big deal is going from 9 speed to 10 speed..." that points to the lack of understanding about the technological differences between the two groups. The difference in the crank alone is reason to switch from 9 to 10, and the front derailleur is a completely different unit.

Once people try it, they expereince what you just did- that it is subtantially different.

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Tom Demerly
The Tri Shop.com

Spoken like a true retailer! ;)

Except for a brief stint in service to my country, I have been a retailer my entire life....

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Tom Demerly
The Tri Shop.com

That's cuz while they were following their dream, we were paying attention in math class.

Exactly, Tom.
Since I only recnetly completed indentured servitude(ie medical residency)I have only had bikes w/ Ultegra prior to this...Ultegra 8 and then 9spd. My Orbea w/ DA 9 spent a season of pro racing( NOT by me!) prior to getting to me. This DA 10spd is my first experience w/ a brand new grouppo....and I have the FSA Carbon crank vs. the DA(as spec by Cervelo..). I have never ridden Campy, so I cannot compare.
I am interested in how the Ultegra 10 STI compares to the DA 10?? Is the throw the same? Is the front der. as nice in action??
HC

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Holden Cain, ObGyn..."People pulling people out of people"