Notices
Cyclocross and Gravelbiking (Recreational) This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like : "Unbound Gravel". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

Dura-ace vs. 105

Old 02-14-05, 12:00 PM
  #1  
Junior Member
Thread Starter
 
Join Date: Oct 2004
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Dura-ace vs. 105

I'm building up a cyclocross bike for my wife based on a Planet X Kaffenback steel frame I got off ebay. I already have 9 spd dura-ace STI shifters from another bike and I really wanted to pair these with a DA rear derailleur. The trouble is that the DA costs $115 from Performance Bike, while the 105 is only $30. I have all 105 on my Poprad and it shifts very smoothly. Is the DA really worth the extra $85??

Also - any favorite seatposts out there? Any advantage to carbon fiber?

Thanks

Rod
trirod is offline  
Old 02-14-05, 12:04 PM
  #2  
Senior Member
 
jeremyb's Avatar
 
Join Date: Sep 2003
Location: Sacramento CA
Posts: 550

Bikes: Raleigh Grand Prix, Cervelo P3alu

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Likes: 0
Liked 3 Times in 3 Posts
use ultegra, for $85 extra DA really isnt worth it, if money is an issue. ultegra imo is the best bang for buck. although theres nothing wrong with 105 either.

jeremyb
jeremyb is offline  
Old 02-14-05, 12:43 PM
  #3  
Get the stick.
 
darkmother's Avatar
 
Join Date: Nov 2004
Location: Toronto, ON
Posts: 1,543

Bikes: 12 Y.O. Litespeed MTB, IRO Jamie Roy fixie, Custom Habanero Ti 'Cross, No name SS MTB, Old school lugged steel track bike (soon)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
I'd stick with 105. You pretty much won't be able to tell the difference. Buy 2, and keep one for backup. I find the high end shimano deraileurs are a rip off-they shift the same as the cheaper ones, and break just as easily.
darkmother is offline  
Old 02-14-05, 12:51 PM
  #4  
Senior Member
 
Join Date: Nov 2004
Location: Portland, OR
Posts: 706
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Thomson posts are nice. I have 2 and they're the best I've used. I've had them both for over a year and the seat hasn't moved on me. I'll still a little unsure about carbon posts. The term "catastrophic failure" scares me. If everything is done right they're fine, but if not the penalty can be pretty severe.
PhattTyre is offline  
Old 02-14-05, 01:17 PM
  #5  
Senior Member
 
oldskoolboarder's Avatar
 
Join Date: Apr 2004
Posts: 347
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have an Il Pompino run as an SS CX. It's pretty much the same frame as yours.

Let me know if you need any help w/ your build. I had to do some searching while trying to run cantis, finding the right seat clamp, etc.

https://www.bikeforums.net/showpost.p...postcount=1560
oldskoolboarder is offline  
Old 02-14-05, 02:29 PM
  #6  
Tiocfidh r L
 
jfmckenna's Avatar
 
Join Date: Dec 2003
Location: The edge of b#
Posts: 5,476

Bikes: A whole bunch-a bikes.

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 463 Post(s)
Liked 123 Times in 76 Posts
I'd go for the 105 too especially if you are going to race it.
jfmckenna is offline  
Old 02-14-05, 04:29 PM
  #7  
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
Originally Posted by trirod
Is the DA really worth the extra $85??

Any advantage to carbon fiber?


No and No.
sydney is offline  
Old 02-15-05, 12:09 PM
  #8  
Senior Member
 
Join Date: May 2004
Posts: 132
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by trirod
I'm building up a cyclocross bike for my wife based on a Planet X Kaffenback steel frame I got off ebay.
Given how heavy this frame is, you should go as cheap as possible for components. All Shimano shifts great, the only difference is weight. Its a waste of money to hang light parts on a 4.5 pound frame, and cross stuff gets broken fast anyway.
peligro is offline  
Old 02-15-05, 12:51 PM
  #9  
Senior Member
 
oldskoolboarder's Avatar
 
Join Date: Apr 2004
Posts: 347
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by peligro
Given how heavy this frame is, you should go as cheap as possible for components. All Shimano shifts great, the only difference is weight. Its a waste of money to hang light parts on a 4.5 pound frame, and cross stuff gets broken fast anyway.
I agree. Bling out a better frame.
oldskoolboarder is offline  
Old 02-15-05, 01:09 PM
  #10  
Senior Member
 
stric's Avatar
 
Join Date: Jul 2004
Posts: 119
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Honestly,
If you plan to race your bike in really nasty conditions, then you're better of with some cheaper components. DA is great but INHO it's too delicate for CX. 105 is very good choice, whereas Ultegra is great.
CX is very hard on bikes, so sooner or later your bike will get bear up no matter what.
Another option is to get some MTB components and put them on your CX bike. If you're using Shimano group, road and MTB components are often compatible. Needless to say MTB derailleurs are much togher and will take more abuse. They also work better in mud.
stric is offline  
Old 02-15-05, 06:19 PM
  #11  
human
 
velocipedio's Avatar
 
Join Date: Jun 2001
Location: living in the moment
Posts: 3,562

Bikes: 2005 Litespeed Teramo, 2000 Marinoni Leggero, 2001 Kona Major Jake (with Campy Centaur), 1997 Specialized S-Works M2, 1992 Specialized Rockhopper

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time in 1 Post
on a cyclo-cross bike, da is overkill. ultegra is overkill. if you go to the races, most of the guys are running 105 because it's tough and cheap. 'cross kills components, and it's easier to replace inexpensive ones. an interesting note, though... a lot of the elite and pro racers run 105 fds when they run fds at all, even if they have da. seems the 105 is way stiffer than ultegra or da, and shifts better under load.
__________________
when walking, just walk. when sitting, just sit. when riding, just ride. above all, don't wobble.

The Irregular Cycling Club of Montreal
Cycling irregularly since 2002
velocipedio is offline  
Old 02-22-05, 04:21 PM
  #12  
Senior Member
 
Join Date: Dec 2004
Location: St Paul, MN
Posts: 698
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I used 105's my first year of racing, and was disappointed by how poorly they shifted when covered with mud, ice and grit. The second year I upgraded to a DA rear derailleur with DA bar-cons. This combination has performed superbly under the worst conditions. It took a while to get accustomed to the bar-cons -- I don't shift as much during a race, but they are extremely reliable, and less susceptible to damage in a crash. I picked up the rear derailleur for $65 and the bar cons for $45 online. I think the 9-spd rear derailleurs are over a hundred bucks now, but you can still find bar cons for about $50. The DA has a much beefier return spring than the 105, which I believe is why it shifts so much better.
lunacycle is offline  
Old 02-26-05, 09:19 AM
  #13  
Cyclocrosser.
 
Join Date: Jul 2004
Location: Unit Zero
Posts: 351

Bikes: '04 Marin Nail Trail, '04 Haro V-3, '05 Soul Monk

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I luff my full Ultegra/XT setup! ^_^
Phiber is offline  
Old 02-26-05, 03:39 PM
  #14  
Junior Member
 
Join Date: Feb 2005
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Phiber -

Re: ultegra/xt...

Do "mtb" cassettes fit on 130mm spaced hubs? Are they the same spec? I want to fit an sram pg-970 9 speed on a shimano-9sp-compatible-road hub but i haven't found anything to confirm or deny this would work. I want the 11-32t gearing in the rear but I need to have road wheels.

Thanks!
pjherron is offline  
Old 02-28-05, 09:09 AM
  #15  
Get the stick.
 
darkmother's Avatar
 
Join Date: Nov 2004
Location: Toronto, ON
Posts: 1,543

Bikes: 12 Y.O. Litespeed MTB, IRO Jamie Roy fixie, Custom Habanero Ti 'Cross, No name SS MTB, Old school lugged steel track bike (soon)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Originally Posted by pjherron
Phiber -

Re: ultegra/xt...

Do "mtb" cassettes fit on 130mm spaced hubs? Are they the same spec? I want to fit an sram pg-970 9 speed on a shimano-9sp-compatible-road hub but i haven't found anything to confirm or deny this would work. I want the 11-32t gearing in the rear but I need to have road wheels.
Thanks!
Yep, it's the same. The only thing you have to watch is your rear deraileur, you may have to run a MTB or road triple.
darkmother is offline  
Old 02-28-05, 12:33 PM
  #16  
Cyclocrosser.
 
Join Date: Jul 2004
Location: Unit Zero
Posts: 351

Bikes: '04 Marin Nail Trail, '04 Haro V-3, '05 Soul Monk

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have SRAM PG-990 11-34 in the rear with an XT Front Deraileur and an Ultegra Rear.
Phiber is offline  
Old 03-02-05, 07:05 PM
  #17  
lover ....
 
Join Date: May 2004
Posts: 243
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Ride the best gear you can afford (don't sweat it), and replace as neccessary.
Bike_13 is offline  
Old 03-05-05, 10:36 PM
  #18  
Junior Member
 
Join Date: Feb 2005
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by darkmother
Yep, it's the same. The only thing you have to watch is your rear deraileur, you may have to run a MTB or road triple.
Thanks darkmother. I figured it was the same but I couldn't find any mm specs to make sure...

Rear derailleur is a deore xt M750 GS 9sp midcage; front derailleur will be acting as a chain watcher; the crank is a truvativ triple; the small chainring will be removed and a spot chain ring guard will be in place of the large chainring. I've been curious for a while what life would be like without front shifting while still having multiple gears. soon I'll find out.
pjherron is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.