Light rings + etap = crap shifting?

Discuss light weight issues concerning road bikes & parts.
RocketRacing
Posts: 941
Joined: Thu May 10, 2018 2:43 am

by RocketRacing

Extralite octarings
Carbon ti carbotech rings.

I can drop 60 or so grams for some fat cash... but i have yet to read good feedback on shifting benefits.

Any ideas or feedback.

And if you have a thm crank to sell, let me know.
Last edited by RocketRacing on Tue Apr 16, 2019 11:37 am, edited 1 time in total.

beanbiken
Posts: 718
Joined: Tue Mar 18, 2014 10:13 pm
Location: Great Southern Land

by beanbiken

Have Extralite [50/34] rings with DA9150, shifting up to the BR I found to be hit & miss. Can't recommend them. I only use them on my 2 "killer" climbs and then it is mostly in the 34............... have TA's in 52/36 good but not excellent, waiting on BOR's 52/36 to try...........
BB

Coffee & carbon

by Weenie


spdntrxi
Posts: 3267
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

building my new bike with extralite 52/36 DA9150... bummer to read this. Have praxis buzz rings just in case which I know work well.

alcatraz
Posts: 2316
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Either modify the extralites with titanium pickup pins or use carbonti which are a few grams heavier.

What I like about carbonti is that it's carbon with alloy teeth and no less than eight pickup pins. That should mean fast shifting and the carbon should help it to remain nice and stiff even for large riders.

The extralites work ok on mechanical if you set the high limit very carefully. Also you need to keep some pressure on the shift lever when upshifting.

mrlobber
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Joined: Sat Oct 23, 2010 9:36 am
Location: Where the permanent autumn is

by mrlobber

The problem with Carbon Ti rings is - if you mess up the upshift phase on load once (especially with electronic) , you risk breaking the ring at the alloy/carbon junction.
Retired bikes: Cervelo S5 2015 / Felt AR FRD 2014 / Cannondale SS HM 2014 / Scott Addict SL 2014 / Scott Plasma Premium 2014 / Orbea Orca 2008 / Look 596 /

alcatraz
Posts: 2316
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Is this common? I'm looking for pictures.

I'd hate to recommend 200usd rings to a friend that later breaks them.

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FIJIGabe
Posts: 1867
Joined: Tue Sep 11, 2012 6:07 pm
Location: The Lone Star State

by FIJIGabe

I have a friend (a coach) whose client broke a set of Carbon Ti rings, last week. I was about to pull the trigger on a 52T, and decided not to. I'll ask him if I can post his photo.
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ancker
Posts: 147
Joined: Sat Dec 31, 2011 9:29 pm

by ancker

I just took the Extralite Octaring MC 52/36 off my "light" bike with eTap 11sp. Front overshifted often enough I was worried about it.
Replaced with Praxis and so far front shifting is great.

RocketRacing
Posts: 941
Joined: Thu May 10, 2018 2:43 am

by RocketRacing

Are we talking praxis road rings? The weigh pretty close to the the sram red rings (148g for 50/34 vs 134g with praxis for 14g savings). Might be an economical replacement when the red wears out.

mrlobber
Posts: 979
Joined: Sat Oct 23, 2010 9:36 am
Location: Where the permanent autumn is

by mrlobber

I have Praxis 50/34 set in silver which weighs 127g.
On Etap, Praxis shifting quality seems to be on par with SRAM's own rings.
Retired bikes: Cervelo S5 2015 / Felt AR FRD 2014 / Cannondale SS HM 2014 / Scott Addict SL 2014 / Scott Plasma Premium 2014 / Orbea Orca 2008 / Look 596 /

bm0p700f
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by bm0p700f

How exactly do you mess up a shift. Remember if you break a carbon Ti ring you could just bend an alloy ring or its teeth and that's the ring ruined anyway.

shotgun
Posts: 279
Joined: Tue Dec 30, 2008 3:38 pm
Location: Philippines

by shotgun

I run Etap on RED Cranks + Extralite rings. I've had a few dropped chains. Aviod cross chaining. They're much more senstive that stock.
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Beaver
Posts: 767
Joined: Wed Aug 18, 2004 6:06 pm
Location: Lower Saxony - Germany

by Beaver

+1 for Praxis. Not as light as the others, but shifting quality is on par with SRAM and five arm Shimano rings (the new four arm ones with big shifting ramps are a tiny bit better).

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KCookie
Posts: 1516
Joined: Thu Feb 12, 2015 9:40 am
Location: Pom living in Australia

by KCookie

I went from DA to THM with praxis rings and couldn't tell the difference, shifting was perfect, then to Extralite and it was definitely a down grade, dropped the chain so many times I've even got damage to the frame, mainly falling inwards. That problem was solved then the chain fell off the DS when ever I dropped into the 11 cog, that problem now solved. When ever I do change gear between the 52/36 I actually pause for a moment then start peddling again. A lot of hassle but I hate the look of the chunky Praxis. My DI2 gearing has now been serviced, trimmed etc so I'll see how my next ride is.
I would advice people to lean towards the Praxis but hey this is WW so I'm sticking to the Extralite. Lol.

PrinceEdward
Posts: 84
Joined: Wed Aug 01, 2018 3:20 pm

by PrinceEdward

I understood that THM se crankset with Extralite ring will definitely caused a chain drop maybe owing to the q factor. As I experienced chain drop inwardly about not less than five time, I purchased a carbonice chain catcher and the problem solved...

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by Weenie


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