Chainrings
Results 1 to 9 of 9

Thread: Chainrings

  1. #1
    RoadBikeReview Member
    Reputation:
    Join Date
    Nov 2009
    Posts
    437

    Chainrings

    Besides some weight will I notice any performance difference between DA 9000 and Ultegra 6800 chainrings (both being the same ratio)?

  2. #2
    Banned Sock Puppet
    Reputation: Lombard's Avatar
    Join Date
    May 2014
    Posts
    11,162
    Quote Originally Posted by JSWhaler View Post
    Besides some weight will I notice any performance difference between DA 9000 and Ultegra 6800 chainrings (both being the same ratio)?
    Here is a good article on where it pays to upgrade and where it doesn't:

    Art's Cyclery Blog Ľ Shimano Road Components ? Where to Spend Your Money

    From the article:

    For the crankset, Ultegra 6800 is about 65 grams lighter than 105 5800 and has more advanced chainrings that shift a little nicer. This makes Ultegra worth the extra money in my opinion. Dura Ace 9000 is another 70 grams lighter than Ultegra 6800 and the arms are a little stiffer, but shifting performance is essentially the same. At more than double the cost of Ultegra, itís hard to make an argument that the small bump in performance offered by Dura Ace is worth the extra dough. So, Ultegra is my value pick here.

  3. #3
    RoadBikeReview Member
    Reputation:
    Join Date
    Aug 2017
    Posts
    40
    DA all the way if a serious amd powerful rider. Stiffer, lighter, never snaps. It is not funny how testimonials posted cracked Ultegra cranks, never DA. Chainring longevity: 15,000 kms dry weather, or roughly 10,000 miles clean perfect best oil lubrication...

  4. #4
    Banned Sock Puppet
    Reputation: Lombard's Avatar
    Join Date
    May 2014
    Posts
    11,162
    Quote Originally Posted by Belisarius View Post
    DA all the way if a serious amd powerful rider. Stiffer, lighter, never snaps. It is not funny how testimonials posted cracked Ultegra cranks, never DA. Chainring longevity: 15,000 kms dry weather, or roughly 10,000 miles clean perfect best oil lubrication...
    Bullhockey! Could you link those "testimonials" of Ultegra cranksets that cracked? I've never heard of this. I've heard of FSA crank arms snapping though. 10,000 miles is not a lot for a crankset anyway, so no need to brag about that.

    And why did you just dredge 4 ancient threads?
    "COMPLACENCY IS LETHAL - VOTE in November." - System Shock.

    "With
    bicycles in particular, you need to separate between what's merely true and what's important."
    -- DCGriz, RBR.





  5. #5
    tlg
    tlg is offline
    RoadBikeReview Member
    Reputation: tlg's Avatar
    Join Date
    May 2011
    Posts
    16,459
    Quote Originally Posted by Belisarius View Post
    DA all the way if a serious amd powerful rider. Stiffer, lighter, never snaps. It is not funny how testimonials posted cracked Ultegra cranks, never DA. Chainring longevity: 15,000 kms dry weather, or roughly 10,000 miles clean perfect best oil lubrication...
    You only get 10,000 mi from chainrings?

    Bwahahahahahahahahahahaha. You're doing something SERIOUSLY wrong.

    OMG that's funny. Thanks for the laugh.
    Custom Di2 & Garmin/GoPro mounts 2013 SuperSix EVO Hi-MOD Team * 2004 Klein Aura V

  6. #6
    RoadBikeReview Member
    Reputation:
    Join Date
    Aug 2017
    Posts
    40
    Quote Originally Posted by Lombard View Post
    Bullhockey! Could you link those "testimonials" of Ultegra cranksets that cracked? I've never heard of this. I've heard of FSA crank arms snapping though. 10,000 miles is not a lot for a crankset anyway, so no need to brag about that.

    And why did you just dredge 4 ancient threads?
    Then you do not take cycling seriously enough to research and know:

    https://carlinthecyclist.com/epic-fa...1-speed-crank/
    https://www.reddit.com/r/cycling/com...tain_distance/

    There was actually a silent recall, your bike mechanic never cared enough to quietly inspect your and warn you?

    My DA is at 23,204 km between April 2014 and 16 May 2020. It likely was ultra quite and efficient by 15k when I experienced a first chain suck.

    My Ultegra is at 10,000kms- half as quite than the 23k DA, but noisier than new. Would you like the exact mileage? Id have to check the computer log...

    Soo... who bragged?
    Last edited by Belisarius; 05-25-2020 at 01:30 PM.

  7. #7
    RoadBikeReview Member
    Reputation:
    Join Date
    Aug 2017
    Posts
    40
    Yep, SERIOUSLY, 10km/hr higher average than you. The DA is at 23,204 kms, off the bike. I estimate that the first chain suck occurred when at 15,000 kms, the the 7-8 months of riding since, it got noisier to give me the three cues that it is done:

    1. Inexplicable front loud chain-rings
    2. Recurring sucks from 53 to 39 (1 every 3/4 rides)
    3. Digital caliper wear 0.5-0.8 mm wider valleys and thinner teeth...

    but YES, If I rode it at 30 km/hr like you, I'd probably get 30,000-40,000kms.

    Swap an Ultegra from another bike, half the mileage, whisper quiet... Digital caliper. Voila... QED...

    I also use the best chain in the world- a Campy SR 22, which does not last 400-800 kms like the Shimano, but more like 3,200 kms to 75% and 4,000 to finish. Since you know that the Campy metal (like the SRAM 1190) is a harder steel alloy and pins, you also know that, invariably, it wears FASTER a softer alloy as on the DA9000-9100 series.. yes, tried numerous free Shiman DA chains, their 5.7-5.8 mm etc, garbage. They work best in a peloton 11-15t as their stress induced angle is lower vs chainrings... Real life, you or me, 800 kms at most and it loosens...

    Campy SR chain is quieter in the rear due to its 5.3mm width (youwould never hear me approaching from behind), in addition to the harder steel alloy, but wears faster the DA 9000/9100 chainrings. Harder wins on softer. Add a top notch Yokozuna cable, and the redesigned RD-9100 after 'friends' pestedd Shimano Global with their chain/cable, RD issues (fastest revision in Shimano history- not that you care), the system changes fast.

    Now, same configuration on a Campy SR Chaining usually lasts riders x2 -x3 the mileage but also costs x3... The Campy SR chainring metallurgy is slightly harder than the Campy SR chain, so it wear the chain a bit faster at power (2500-3000 kms pro level with a best zone of 800-2200 kms).

    As you also know, at high speed drafting, less effort, less chain deflection. 20,000 kms in a group @ 40km/hr wears less a system than 15,000 kms @ 30 km/hr solo...

    Now, here is a test. Next time you go riding at 25-30 km/hr, cross the chains (50 with 28), and see if you realize it without looking. On my setup, at speed, I have to be very careful with power as I DO NOT NOTICE 53-28. That quiet, smooth and efficient. if I do not see the 24-26km/hr at 100-110 RPM, I would not glance down. OOOOPS, probably have 7-10kms max lifetime in this x configuration, all bikes. Of course with SRAM or Shimano chains, impossible, they would let me know by 25/27t...

    These nuances escaped me until a former Eddie Mercks mechanic explained them to me, from that age to gen by gen pro and con of every major lineup (Campy, Shimano or SRAM). It is he whom got me to combine parts thankfully I was not under some NDA and contract with Shimano..
    Last edited by Belisarius; 05-25-2020 at 12:11 PM.

  8. #8
    Banned Sock Puppet
    Reputation: Lombard's Avatar
    Join Date
    May 2014
    Posts
    11,162
    Quote Originally Posted by Belisarius View Post
    Yep, SERIOUSLY, 10km/hr higher average than you. The DA is at 23,204 kms, off the bike. I estimate that the first chain suck occurred when at 15,000 kms, the the 7-8 months of riding since, it got noisier to give me the three cues that it is done:

    1. Inexplicable front loud chain-rings
    2. Recurring sucks from 53 to 39 (1 every 3/4 rides)
    3. Digital caliper wear 0.5-0.8 mm wider valleys and thinner teeth...

    but YES, If I rode it at 30 km/hr like you, I'd probably get 30,000-40,000kms.

    Swap an Ultegra from another bike, half the mileage, whisper quiet... Digital caliper. Voila... QED...

    I also use the best chain in the world- a Campy SR 22, which does not last 400-800 kms like the Shimano, but more like 3,200 kms to 75% and 4,000 to finish. Since you know that the Campy metal (like the SRAM 1190) is a harder steel alloy and pins, you also know that, invariably, it wears FASTER a softer alloy as on the DA9000-9100 series.. yes, tried numerous free Shiman DA chains, their 5.7-5.8 mm etc, garbage. They work best in a peloton 11-15t as their stress induced angle is lower vs chainrings... Real life, you or me, 800 kms at most and it loosens...

    Campy SR chain is quieter in the rear due to its 5.3mm width (youwould never hear me approaching from behind), in addition to the harder steel alloy, but wears faster the DA 9000/9100 chainrings. Harder wins on softer. Add a top notch Yokozuna cable, and the redesigned RD-9100 after 'friends' pestedd Shimano Global with their chain/cable, RD issues (fastest revision in Shimano history- not that you care), the system changes fast.

    Now, same configuration on a Campy SR Chaining usually lasts riders x2 -x3 the mileage but also costs x3... The Campy SR chainring metallurgy is slightly harder than the Campy SR chain, so it wear the chain a bit faster at power (2500-3000 kms pro level with a best zone of 800-2200 kms).

    As you also know, at high speed drafting, less effort, less chain deflection. 20,000 kms in a group @ 40km/hr wears less a system than 15,000 kms @ 30 km/hr solo...

    Now, here is a test. Next time you go riding at 25-30 km/hr, cross the chains (50 with 28), and see if you realize it without looking. On my setup, at speed, I have to be very careful with power as I DO NOT NOTICE 53-28. That quiet, smooth and efficient. if I do not see the 24-26km/hr at 100-110 RPM, I would not glance down. OOOOPS, probably have 7-10kms max lifetime in this x configuration, all bikes. Of course with SRAM or Shimano chains, impossible, they would let me know by 25/27t...

    These nuances escaped me until a former Eddie Mercks mechanic explained them to me, from that age to gen by gen pro and con of every major lineup (Campy, Shimano or SRAM). It is he whom got me to combine parts thankfully I was not under some NDA and contract with Shimano..
    Gawd, you are long winded. Where do you come up with all this shiitake? If you are only getting 400-800km out of a Shimano chain, you are clearly doing something wrong. Do you use sand for a lube? I got 6000+ miles out of my last Shimano chain. The only reason I changed it is because it had a stiff link I could not work out. There was no noticeable wear on the chain and the new chain shifts perfectly with the 6000+ mile cassette.
    "COMPLACENCY IS LETHAL - VOTE in November." - System Shock.

    "With
    bicycles in particular, you need to separate between what's merely true and what's important."
    -- DCGriz, RBR.





  9. #9
    tlg
    tlg is offline
    RoadBikeReview Member
    Reputation: tlg's Avatar
    Join Date
    May 2011
    Posts
    16,459
    Quote Originally Posted by Belisarius View Post
    The DA is at 23,204 kms, off the bike. I estimate that the first chain suck occurred when at 15,000 kms, the the 7-8 months of riding since, it got noisier to give me the three cues that it is done:

    I also use the best chain in the world- a Campy SR 22, which does not last 400-800 kms like the Shimano, but more like 3,200 kms to 75% and 4,000 to finish.
    Hahahahahahahahaha That's pathetic. I'd quit riding if my stuff wore out that fast.


    but YES, If I rode it at 30 km/hr like you,
    You're clueless.




    Now, here is a test. Next time you go riding at 25-30 km/hr, cross the chains (50 with 28), and see if you realize it without looking.
    50x28 @ 30km/h = 133rpm


    Thanks for the laughs!
    Custom Di2 & Garmin/GoPro mounts 2013 SuperSix EVO Hi-MOD Team * 2004 Klein Aura V

Similar Threads

  1. are sram red chainrings compatable with shimano chainrings ?
    By joker in forum Components, Wrenching
    Replies: 2
    Last Post: 12-17-2012, 09:36 AM
  2. 54T/42T chainrings
    By rasputinlv in forum Components, Wrenching
    Replies: 23
    Last Post: 11-05-2012, 05:43 PM
  3. Better Chainrings
    By santos_pons in forum Components, Wrenching
    Replies: 5
    Last Post: 03-28-2012, 06:51 PM
  4. Replies: 1
    Last Post: 07-31-2009, 02:47 PM
  5. Chainrings
    By daniell in forum General Cycling Discussion
    Replies: 1
    Last Post: 09-07-2005, 02:58 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

THE SITE

ABOUT ROADBIKEREVIEW

VISIT US AT

© Copyright 2020 VerticalScope Inc. All rights reserved.