shimano 52-36 recomendations true?

Discuss light weight issues concerning road bikes & parts.
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WILLIAMDENYS
Posts: 32
Joined: Fri Aug 24, 2018 5:06 pm

by WILLIAMDENYS

I'm a young belgian cyclist and the maximum pedal stroke distance is 48-14 so i cant use original shimano chainrings , i bought a ultegra di2 groupset with 52-36 and replaced the 52 with a 48-36 what does shift very well. Now i want to cut a couple 10grams with a 34 chainring. Will this shift as good? or will i drop chains etc. Someone has experience with stuff like this? :welcome:
- ridley fenix sl 105 - not lightweight
- sworks tarmac sl 5 r8050 di2 - vision tc 24 wheels = 7,1kg

by Weenie


blaugrana
Posts: 28
Joined: Wed May 24, 2017 9:49 pm

by blaugrana

The usual combination that 34 chainrings are used in is with a 50 big ring, and that works perfeclty fine, so a 48-34 should shift as well or even better. However, unless you actually need the easier gearing I wouldn't put a 34 to save 10 grams, just pick the size that works best for the type of races you do.

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

by wheelsONfire

Agree... i use 50-36 on my Etap. I have no use for a 34.
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spdntrxi
Posts: 1956
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

I use a 52/34 Ultegra 8000 on the gravel setup... shifts very well.

WILLIAMDENYS
Posts: 32
Joined: Fri Aug 24, 2018 5:06 pm

by WILLIAMDENYS

thanks , im thinking about changing if its worn out
- ridley fenix sl 105 - not lightweight
- sworks tarmac sl 5 r8050 di2 - vision tc 24 wheels = 7,1kg

WorkonSunday
Posts: 40
Joined: Tue Jan 16, 2018 4:39 pm

by WorkonSunday

GCN on youtube just featured a Canyon Ultimate with 52 34. Presenter said its definitely not as goog as 52 36 but it does work and has not experienced problems

WILLIAMDENYS
Posts: 32
Joined: Fri Aug 24, 2018 5:06 pm

by WILLIAMDENYS

yes but 52-34 is a bigger gap than a 48-34
- ridley fenix sl 105 - not lightweight
- sworks tarmac sl 5 r8050 di2 - vision tc 24 wheels = 7,1kg

by Weenie


Beanicyclist
Posts: 9
Joined: Tue Oct 02, 2018 7:45 pm

by Beanicyclist

Don't bother saving a silly 10 grams or so just by changing a chainring. If a 36 works fine and gives you ideal gear ratios then keep it that way. I'm a junior and run 52-36 with 14-28 and find that I have a gear that's good enough for even the steepest of climbs!
If it's just about weight, seriously look elsewhere. You can save some for cheaper prices by using latex tubes, titanium skewers etc. (don't know your exact bike setup though).

-BC :D
"Eat your green vegetables"- Peter Parker, 2004.

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