shimano 6700 --- > 6800 caliper! upgrade?

Discuss light weight issues concerning road bikes & parts.
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project3
Posts: 211
Joined: Tue Jul 14, 2009 2:18 am

by project3

my stock bike comes with 6700 calipers. My friend is selling his brand new 6800 caliper for USD150. Is this consider a brake performance upgrade? or just keep the $$$ for 7900, 9000? sorry no budget for eebrake.

http://www.starbike.com/en/thm-carbones-fibula/

thanks.

FIJIGabe
Posts: 1400
Joined: Tue Sep 11, 2012 6:07 pm
Location: The Lone Star State

by FIJIGabe

it's an upgrade, but not huge. Admittedly, I have not used 6800, but Shimano claims a 10% improvement in braking. I don't personally consider that to be a huge gain, especially given that the brakes are around the same weight (it's also a bit of a nebulous term. 10% improvement in what?). The principal design change is going from a single pivot to a dual pivot. if your brakes work well, go with a good upgrade, to something lighter, or more powerful. This is, in my opinion, barely an incremental step.

also, that price isn't great, considering you can get them brand new for $140 and probably less, if you shop around a little.
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DMF
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Location: Sweden

by DMF

FIJIGabe wrote:...The principal design change is going from a single pivot to a dual pivot.


Uhm, both 6700 and 6800 are dual pivot, or did I misread you there?

High-jacking the thread a bit, are the 6800 substantially smaller in outer dimensions, as in narrower frontal area, more petite appearance than the 6700? They look that way, but I can't find any decent pictures that would showcase the difference, if there is any?

FIJIGabe
Posts: 1400
Joined: Tue Sep 11, 2012 6:07 pm
Location: The Lone Star State

by FIJIGabe

6700 isn't a true dual pivot. 6700 uses the attaching bolt as the second pivot, whereas 6800 has two dedicated pivots, where the attaching bolt only attaches the brake to the bike.
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Madone 5 https://goo.gl/cMdyFo

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Ceebers1
Posts: 35
Joined: Sun Apr 25, 2010 6:29 am

by Ceebers1

The 6800 brakes have more power and better modulation than the 6700's.

Just like the 9000 brakes, the 6800 have a roller between the two arms that they pivot against, giving a very solid, smooth feel.

project3
Posts: 211
Joined: Tue Jul 14, 2009 2:18 am

by project3

finally i have changed from 6700 to 7900 without paying a premium price. For a brand new set of 7900 only for USD180 and managed to se my 6700 for 70 so i need to top up another 110. result? almost the same but i managed to reduce another 30g.

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