What is the difference between pre-2015 Chorus vs Record cranks?

Discuss light weight issues concerning road bikes & parts.
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Catagory6
Posts: 216
Joined: Thu Feb 09, 2017 2:36 am

by Catagory6

i don't know if the 2015 update even applies to cranks, or if its just shifters/derailleurs.

obviously, i'm inquiring about 11-speed.

by Weenie


robertbb
Posts: 548
Joined: Thu Jul 23, 2009 3:35 am
Location: Melbourne, Australia

by robertbb

Pretty sure the <2015 Chorus crank arms weren't hollow - they had some kind of foam core.

R/SR were hollow, plus the usual addition of different bearings / Ti spindle.

2015+ I'm 99% sure there is no difference whatsoever in the crank arms between C/R/SR.
It's ALL about the bike.

RobertBB's CyclePlanner Spreadsheet:
https://weightweenies.starbike.com/foru ... 8&t=152263

bm0p700f
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Location: Glermsford, Suffolk U.K
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by bm0p700f

Only super record has the time spindle. Record has the usb bearings and super record had cult bearings.

Catagory6
Posts: 216
Joined: Thu Feb 09, 2017 2:36 am

by Catagory6

any significant weight difference between the chorus and the record due to the foam core?

AJS914
Posts: 2366
Joined: Tue Jan 28, 2014 6:52 pm

by AJS914

There is like a 30 gram difference between the two.

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