Sunday, March 4, 2018

Guide to Group Set Weights

Wheels of Happiness

Rizal Philippines
March 4, 2018



Ever wondered why there is certain heaviness at the rear of your bike. It may be due to the GS:  the  crankset, the cogs, chain, the RD and the brakes.  Here is the  guide for  the GS weights:   you may spend more for the high end, but  saving weight makes for more  efficient pedalling, more watts for your forward motion, less tiring on your  part.

From Bikelane - Group set component weights.


Thus, Campy and SRA groupsets are generally across the board lighter than Shimano.  There is less weight variance among Campy GS,  big variance among SRAM GS and Shimano.

Thus for Shimano:    6800 is lighter  than 5800 by mere  91 grams;  Durace 9000 is lighter  than 6800 by whopping 409 grams!    Thus 5800 is  heavier than Durace by almost 1/2 kg!

For Campy:  Super Rekord is lighter  than Rekord by mere 99 grams,  Record  is lightervs Chorus by  only 81 grams

Across group set:  for the lightest:

          Durace                                 1,998 grams

         Super record                         1,940 grams (  58 grams)

         SRAM Red bb 30                1,741  grams  (257)   maselan for BB 30 frameset only

         SRAM GXP (standard)       1,845 grams   (153) grams


     


Shimano Dura-Ace 9000 Mechanical Groupset


Weight comparison between Ultegra 6700 and 6800 mere 35 grams difference (lighter)

Weight comparison: Ultegra 6700 vs Ultegra 6800
Ultegra 6700
Ultegra 6800
Chainset/BB
791g
765g (-26g)
STI Levers
447g
425g (-22g)
Rear Derailleur
189g
195g (+6g)
Front Derailleur
89g
89g
Brake Calipers
317g
335g (+18g)
Chain
267g
253g (-14g)
Cassette
209g
212g (+3g)
Total
2309g
2274g (-35g)
Comparison between RS 8000 and Ultegra 6800   -->   RS 8000 is actually heavier  (even vs Ultegra 6700)?

Weight comparison among 105, 6700 and  6800

Looking at buying a 2015 model Giant Defy Advanced, with either 105 5800 or Ultegra 6800 group-set. Did a bit of research on the group-set weights;

                      Ultegra 6700                Ultegra 6800                105 5800        Ultegra 8000
Chainset         791g                            765g                            736g                 674g
STI Levers      447g                            425g                            486g                438g
Rear Drlr         189g                           195g                             234g               200g  
Frnt Drlr            89g                             89g                               89g               106g
Brke Calipers   317g                           335g                            378g               360g
Chain               267g                           253g                            253g               253g
Cassette           209g                           212g                           269g               232g
Total                 2309g                         2274g                        2445g               2263

Ultegra 8000 is lighter vs  6800 by only 9 grams, and 6700 by  46 grams;   am I glad I got a 6700 for my Bianchi





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