This is a ISIS bottom bracket

"CCC (formerly CyclistCarCoexist)" (ccpbb) 05/25/2016 at 21:33 • Filed to: Bikelopnik

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I actually this exact bottom bracket on my Felt...and it sucks. It lasted me several months and got toasted. A new Shimano Hollowtech BB with the Di2 build is coming....

Grindintosecond > CCC (formerly CyclistCarCoexist) 05/25/2016 at 21:39

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Fix it, sell the felt, get a new di2 felt. Save some money

Arch Duke Maxyenko, Shit Talk Extraordinaire > CCC (formerly CyclistCarCoexist) 05/25/2016 at 21:54

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Is it a bomb?

aberson Bresident of the FullyAssed Committe > CCC (formerly CyclistCarCoexist) 05/25/2016 at 22:04

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kaboom?

HammerheadFistpunch > CCC (formerly CyclistCarCoexist) 05/25/2016 at 22:14

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I remember ISIS, Still have it on one of my bikes, but its Chris King I think

PotbellyJoe and 42 others > CCC (formerly CyclistCarCoexist) 05/25/2016 at 23:07

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1. Hollowtech II is the pinnacle of the BB.

2. I am two years on 6770 Di2, worthy splurdge. I love it.

CCC (formerly CyclistCarCoexist) > Grindintosecond 05/25/2016 at 23:22

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I’m buying Di2 at shop mechanic pricing and a felt road di2 bike is like 4 grand.

Neil drives a beetle and a fancy beetle > HammerheadFistpunch 05/25/2016 at 23:22

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No chris king Isis bottom brackets. They didn't get in the game until after external bottom brackets were a thing.

CCC (formerly CyclistCarCoexist) > Arch Duke Maxyenko, Shit Talk Extraordinaire 05/25/2016 at 23:23

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The cracking sound of the toasted bearings sound like the ticking of a bomb.

CCC (formerly CyclistCarCoexist) > PotbellyJoe and 42 others 05/25/2016 at 23:24

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Hollowtech II has one fault: inability to be rebuilt.

Neil drives a beetle and a fancy beetle > CCC (formerly CyclistCarCoexist) 05/25/2016 at 23:26

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ISIS definitely wasn’t the best bottom bracket design. The bearings tended to be too small, but there is definitely an environmental factor. I had one that lasted quite a while on a bike I only rode on nice days in the summer. People in wetter weather saw worse results.

Although I have some beef with external bottom brackets, their longevity tends not to be a problem even in bad weather. Hard to go wrong with Shimano.

facw > CCC (formerly CyclistCarCoexist) 05/25/2016 at 23:26

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Replacing the bottom bracket on my bike was a huge improvement (just a square taper setup here). Getting the old one unscrewed was a tremendous pain though. I clearly needed a much bigger breaker bar for the drive side...

CCC (formerly CyclistCarCoexist) > HammerheadFistpunch 05/25/2016 at 23:28

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I think Chris King would know better not to make a fundamentally flawed product.

CCC (formerly CyclistCarCoexist) > Neil drives a beetle and a fancy beetle 05/25/2016 at 23:30

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Shimano just has bottom brackets that are designed to not be put back together. That’s the only problem.

PotbellyJoe and 42 others > CCC (formerly CyclistCarCoexist) 05/25/2016 at 23:34

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True, but when cared for, it makes for a pretty durable and strong BB.

PotbellyJoe and 42 others > CCC (formerly CyclistCarCoexist) 05/25/2016 at 23:34

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As a side question (from a guy who hasn’t been behind the counter for 15 years) are the discounts still as good as they used to be?

HammerheadFistpunch > Neil drives a beetle and a fancy beetle 05/26/2016 at 00:04

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probably raceface then...its been a while since I was in there.

CCC (formerly CyclistCarCoexist) > PotbellyJoe and 42 others 05/26/2016 at 02:23

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It’s pretty good, but there are frequent shortages of components..

whiskeybusiness NOW A DANGER TO CROWDS NEAR YOU > CCC (formerly CyclistCarCoexist) 05/26/2016 at 09:26

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They’re junk. Everything about them, from the hearing design to the splined spindle that wears out all the time. But if you’ve got Di2 money, that is a good route to go.