Light rings + etap = crap shifting?

Discuss light weight issues concerning road bikes & parts.
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wheelsONfire
Posts: 2963
Joined: Mon Jul 07, 2014 8:15 am
Location: NorthEU

by wheelsONfire

Some years ago when i asked about Extralite chainrings, the dealer told me, they're not for you. You'd only complain.
"They work" for light riders and climbing was the answer.
Bikes:

Ax Lightness Vial EVO Race (2018.12.21)
viewtopic.php?f=10&t=156137
Paduano Racing Fidia (kind of shelved)
Open *UP* (2016.04.14)


Ex bike; Vial EVO D

spdntrxi
Posts: 3146
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

damn guess I'll be adding a chain catcher to me Extralite/THM SE setup

by Weenie


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wheelsONfire
Posts: 2963
Joined: Mon Jul 07, 2014 8:15 am
Location: NorthEU

by wheelsONfire

When i told the dealer of my preferences, i told him. Shifting prio one, weight prio two.
I have zero tolerance for bad shifting. Then he told me, well, i assume or atleast can't warrant you'd be happy with Extralite.
We discussed a bit more and he told me, Extralite is not for you.
Bikes:

Ax Lightness Vial EVO Race (2018.12.21)
viewtopic.php?f=10&t=156137
Paduano Racing Fidia (kind of shelved)
Open *UP* (2016.04.14)


Ex bike; Vial EVO D

spdntrxi
Posts: 3146
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

man... back to praxis buzz maybe

RocketRacing
Posts: 888
Joined: Thu May 10, 2018 2:43 am

by RocketRacing

I am for sure in the quality shifting is priority #1 camp. I didn’t go buy a high end drivetrain to make it shift like crap for the sake of 30-40g.

I am sick, but not that sick. Praxis will be on my radar when it comes time to refresh my chainrings (which will be a while as my etap is pretty new).

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Lelandjt
Posts: 525
Joined: Tue Jan 19, 2016 7:10 am

by Lelandjt

When people say "bad front shifting" I feel like they just mean that you need to let off the power and wait for a second. Everyone's gotten so used to perfect modern shifting that they don't want to back off for a revolution. I still shift like I'm riding a late 90s bike and all my shifts are smooth, silent, and quick enough to not bother me but I think that's due to what I'm doing with my feet, hand, and how I set up the derailleur.

RocketRacing
Posts: 888
Joined: Thu May 10, 2018 2:43 am

by RocketRacing

That is part of my point. Is it worth saving 20-40g to make a top end modern groupset shift like it was 1990 again?

I am not saying that a hammerfest when shifting is a good practice, but why take a step back? Any marginal gains in lower weight will be far outweighed by power lost in slower shifting.
Last edited by RocketRacing on Wed Apr 17, 2019 8:21 pm, edited 1 time in total.

spdntrxi
Posts: 3146
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

Praxis are also ugly... but yeah

ancker
Posts: 146
Joined: Sat Dec 31, 2011 9:29 pm

by ancker

Lelandjt wrote:
Wed Apr 17, 2019 6:44 pm
When people say "bad front shifting" I feel like they just mean that you need to let off the power and wait for a second. Everyone's gotten so used to perfect modern shifting that they don't want to back off for a revolution. I still shift like I'm riding a late 90s bike and all my shifts are smooth, silent, and quick enough to not bother me but I think that's due to what I'm doing with my feet, hand, and how I set up the derailleur.
When I say bad shifting with Extralite rings, I mean:
1) Situations where I've had it both drop inside and outside the rings.
2) Slow/clunky shifting resulting in me looking down to see if my chain was still on.
3) Low enough confidence that I either cross-chain to avoid shifting or back enough off the power to look down and make sure I don't drop.

This is not an issue for the original SRAM chainrings or the new Praxis I just installed.
I have three bikes with eTap, two 2x, and one 1x. The only combination that gives me any shifting issues is 2x with Extralite Octaramp rings.

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wheelsONfire
Posts: 2963
Joined: Mon Jul 07, 2014 8:15 am
Location: NorthEU

by wheelsONfire

Skip those Extralite chainrings! I wouldn't venture shifting for that weight difference.
Bikes:

Ax Lightness Vial EVO Race (2018.12.21)
viewtopic.php?f=10&t=156137
Paduano Racing Fidia (kind of shelved)
Open *UP* (2016.04.14)


Ex bike; Vial EVO D

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

by PrinceEdward

A 5g chain catcher resulted no more chain drop and acceptable front derailleur shiftingImage

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User avatar
wheelsONfire
Posts: 2963
Joined: Mon Jul 07, 2014 8:15 am
Location: NorthEU

by wheelsONfire

I wouldn't dare use a THM crank with those chainrings! Hell, i wouldn't dare use THM with any chainrings. Even if i am satisfied with my Etap setup, i can't swear the chain won't jump. I can just imagine the chain biting down in the THM crank :cry:
Bikes:

Ax Lightness Vial EVO Race (2018.12.21)
viewtopic.php?f=10&t=156137
Paduano Racing Fidia (kind of shelved)
Open *UP* (2016.04.14)


Ex bike; Vial EVO D

ancker
Posts: 146
Joined: Sat Dec 31, 2011 9:29 pm

by ancker

PrinceEdward wrote:
Thu Apr 18, 2019 4:46 pm
A 5g chain catcher resulted no more chain drop and acceptable front derailleur shifting

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I had a chaincatcher installed. Made me confident that I wouldn't drop to the inside. No matter how I had it set up, it would still drop to the outside.
I gave up, installed Praxis rings, no more issues.

spdntrxi
Posts: 3146
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

wheelsONfire wrote:
Thu Apr 18, 2019 5:31 pm
I wouldn't dare use a THM crank with those chainrings! Hell, i wouldn't dare use THM with any chainrings. Even if i am satisfied with my Etap setup, i can't swear the chain won't jump. I can just imagine the chain biting down in the THM crank :cry:
I"ll be trying extralite with THM cranks... just ordered a gold Omni chain catcher ( I have a gold chain and gold chainring bolts).. my crank arms will be taped up for protection as I fine tune the Di2. Shit can happen.. my chain bit down pretty hard on my DA cranks before .. so yeah I worry a little.

by Weenie


KCookie
Posts: 1499
Joined: Thu Feb 12, 2015 9:40 am
Location: Pom living in Australia

by KCookie

Wish I had a chain catcher. Look at the damage to my frame caused by multable chain drop. Once repaired I'll use one and probably tape the THM crank arm. Already scratched a little though. Extralite are light and do look good, but I think this could have been avoided by using the Praxis rings. Image

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