Cervelo / BBRight Bottom Bracket

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virenque
Posts: 274
Joined: Fri Oct 21, 2005 4:08 am

by virenque

Can I check what bottom bracket is everyone using with Cervelo / BBRight frames? Do you use any Loctite/expoxy during assembly and if yes which type?

Thanks in advance for feedback on this!!

alcatraz
Posts: 4064
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Cervelo frames require plastic or alloy cups pressed into them.

If you are a heavy rider or a sprinter or a low cadence climber you need to be extra careful.

Try pressing in the cups without retaining compound first. If they are a tight fit then you could try without retaining compound.

If they don't require much effort to press in you better use retaining compound. It all depends on the bb shell tolerances in your frame. (I forgot which type works on a carbon surface and/or plastic/alloy. You might need something special and use a primer first. I've used 609 or 638 on metal surfaces. I've cheated and used on carbon once without a problem but it's not recommended)

If you are unlucky and get a poor tolerance frame (cervelo isn't famous for being great) and you happen to be a heavier or stronger rider, you will run into problems. You might need to get a custom bottom bracket or at least a screw together bottom bracket a la bbinfinite.

Depends on your circumstances. I'm a light guy and my (fake) cervelo s5 runs fine without any special bb or retaining compound.

There are other benefits of running a screw together bb such as improved bearing life.

/a

by Weenie


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1415chris
Posts: 1433
Joined: Sat Apr 18, 2009 8:59 am
Location: Surrey UK

by 1415chris

I would skip plastic bb straight away and look towards aluminium threaded-together or as a one piece brackets.
I mounted my first plastic bb-righ using loctite with retainer. No problems till it came to replacement time. Oh boy, what a fight...
But the positive aspect of this exercise was that I learned how strong carbon frames can be ;)
Next brackets were pressed without any fillers/retainers. As it is stated above, how successful plastic bb can be depends on tolerances.
Now I'm on aluminium threaded-together and would recommend this solution as far superior to plastic PFs.



Karvalo
Posts: 3466
Joined: Fri Aug 10, 2018 6:40 pm

by Karvalo

alcatraz wrote:
Fri Jan 18, 2019 7:29 am
Depends on your circumstances. I'm a light guy and my bike that has nothing to do with the one being queried runs fine without any special bb or retaining compound.
Fixed that for you.

siim
Posts: 107
Joined: Sun Nov 26, 2017 9:37 pm
Location: Estonia

by siim

I have C-Bear BB installed to my R3 Disc and it's been trouble free so far. Not ridden much yet: less than 1500km.

none
Posts: 291
Joined: Mon Dec 17, 2018 11:29 pm
Location: NE PA

by none

I have used Teflon plumbing tape to remedy noisy b/b on carbon frames. That seems to work after handful of applications.

uraqt
Posts: 1108
Joined: Mon Apr 03, 2006 8:53 am

by uraqt

What crank?

C

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wheelsONfire
Posts: 6292
Joined: Mon Jul 07, 2014 8:15 am
Location: NorthEU

by wheelsONfire

I would order Hambinis bottom bracket.
https://www.hambini.com/bike-parts.html?frametype=43
Bikes:

Ax Lightness Vial EVO Race (2019.01.03)
Open *UP* (2016.04.14)
Paduano Racing Fidia (kind of shelved)


Ex bike; Vial EVO D, Vial EVO Ultra, Scott Foil, Paduano ti bike.

stevod
Posts: 32
Joined: Tue Aug 18, 2015 8:09 am

by stevod

I've done about 10,000k on a Wheels Mfg thread-together BBRight with angular contact bearings. No issues or noises ever. No sign of any bearing issue when I just transferred it to another frame.

Installs pretty easily with just a little grease:
https://www.youtube.com/watch?v=3i66Nmo8Eyw

S

stevod
Posts: 32
Joined: Tue Aug 18, 2015 8:09 am

by stevod

^it's also lighter than the part-plastic BBB one that Cervelo were shipping in their frames recently.

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ryanw
in the industry
Posts: 2284
Joined: Sat Apr 16, 2016 6:52 pm
Location: London

by ryanw

siim wrote:
Fri Jan 18, 2019 8:24 am
I have C-Bear BB installed to my R3 Disc and it's been trouble free so far. Not ridden much yet: less than 1500km.
Same with my S5. Better (quieter) than my old CeramicSpeed coated.
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IG: RhinosWorkshop

modcon
Posts: 18
Joined: Sat Apr 07, 2018 8:32 am

by modcon

Standard sram press fit for BB30. A touch over 10000km, no issues. 83kg, powerful rider, lots of climbing. This is for an R3 disc, the first iteration.

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Andres
Posts: 61
Joined: Mon Mar 09, 2009 10:10 am

by Andres

virenque wrote:
Fri Jan 18, 2019 6:27 am
Can I check what bottom bracket is everyone using with Cervelo / BBRight frames? Do you use any Loctite/expoxy during assembly and if yes which type?

Thanks in advance for feedback on this!!
Had good luck with either the thread together from Wheels Manufacturing or Torqtite from Enduro, or using the Morgan Blue waterproof paste mentioned in a different thread. Seems like Rotor BB's did the worst out of any plastic BB's, Sram PF30's seemed to work quite well.

Stueys
Posts: 673
Joined: Sat Nov 22, 2014 1:12 pm

by Stueys

Another vote for cbear. Mines been in for two years now with zero issues.

by Weenie


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AnkitS
Posts: 1456
Joined: Wed Jan 09, 2019 5:03 am
Location: Santa Cruz, CA

by AnkitS

I have no idea what I am going to do with my 2018 S3 disc either. From these comments, it looks like I'm going wheels mfg or c-bear, but I'm leaning towards wheels mfg. (Hambini's cheap one is OOS :( ). I was also disappointed with the glue in a compression plug that is actually just an aluminum tube with a star nut inside. What did you guys replace that expander with? I'm thinking enve because its bling but the enve compression plug is not a very weight weenie.

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