Campagnolo bottom bracket cups gap?

Discuss light weight issues concerning road bikes & parts.
isharamet
Posts: 31
Joined: Sat Feb 08, 2014 4:22 pm
Location: Minsk, BY

by isharamet

Bought new bike (factory assembled) and noticed the gap between bb and cup edge. Is it ok or not? Thanks.

Image

joestralia
Posts: 35
Joined: Fri May 20, 2011 8:48 pm

by joestralia

No! Before you rack up significant miles, get it pressed in. Also make sure that the cup sits square on the BB shell (pre-supposing that the BB is in a square angle). You may want to argue that the cup and the bearing is damaged. Hopefully the BB is not!

If you have CULT bearings, it'll be expensive to replace.

This is a great example of why I (and probably a lot of other weenies) hate a pressfit type BB!

Good Luck ~J

by Weenie


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Stolichnaya
Posts: 2615
Joined: Wed Oct 06, 2004 6:55 pm
Location: Vienna, AUT

by Stolichnaya

Not only is that not full pressed in, but it seems from the photo that it is pressed in at a slight angle (not itting square as joe mentioned above).
I am surprised that the hirth joint on the Campy cranks even meets up fully. That is a terrible installation job if you ask me.

isharamet
Posts: 31
Joined: Sat Feb 08, 2014 4:22 pm
Location: Minsk, BY

by isharamet

Thank you guys! Just pressed it to the limit, looks tight and square.

Image

Butcher
Shop Owner
Posts: 831
Joined: Sun Jan 03, 2010 4:58 am

by Butcher

From my understanding if the cups are pressed in, they can come right back out. There are a lot of threads about BB30 and PF30 adapters and Campy cranks. Lots of answers using locktite, epoxy, and some home brewed efforts too. Since it is back in now, I would keep and eye on it.

LionelB
Posts: 1441
Joined: Sun Oct 05, 2008 8:09 pm
Location: Aix en Provence

by LionelB

Don't be surprised if it come back out on the first ride.

isharamet
Posts: 31
Joined: Sat Feb 08, 2014 4:22 pm
Location: Minsk, BY

by isharamet

LionelB, Butcher, you're right. Just made small 40k ride and cups came out even more. So I'm starting to search solution to my problem. Thank you.

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bikerjulio
Posts: 1901
Joined: Fri Dec 11, 2009 10:38 pm
Location: Welland, Ontario

by bikerjulio

Praxis just came out with a PF30 to Campy UT adapter. I would not waste any more time with the Campy one.

Their other adapters come highly recommended.

https://praxiscycles.com/product/conv-bb-campagnolo/
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM

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Calnago
Posts: 5655
Joined: Sun Nov 07, 2010 9:14 pm

by Calnago

Agreed... Move on quickly and save yourself some headache.
@Bikerjulio... (Or anyone) Have you had any experience with the Overtorque stuff yet?


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em3
Posts: 887
Joined: Tue Dec 23, 2008 2:57 pm
Location: NYC

by em3

...."factory assembled" means nothing....any shop with a real mechanic should disassemble full bike and install properly (especially BB cups). If your cup has already slipped out after your first few rides then it is a sign IME that you will need to secure with Loctite 609 and proper activator. There are several threads on this forum on the merits of using proper Loctite gap filler. The Loctite method for BB press fit cups is recommended by many manufacturers (Cervelo, Specialized, trek, Cannondale, etc).
EM3
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mattr
Posts: 3457
Joined: Fri May 25, 2007 6:43 pm
Location: The Grim North.

by mattr

Or if it's coming out already, what damage had it done to the seats?

Might be worth taking it back to the shop and explaining the situation.

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bikerjulio
Posts: 1901
Joined: Fri Dec 11, 2009 10:38 pm
Location: Welland, Ontario

by bikerjulio

I'd stress not riding it at all since the bearings are going to go quickly with cocked cup(s).

@Bikerjulio... (Or anyone) Have you had any experience with the Overtorque stuff yet?


Not practical experience. Only what I've found.

I like the simplicity of UT. And also GXP for the reason that no special tools required and quick to install and remove.

OT requires another set of special tools, which puts me off.
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM

isharamet
Posts: 31
Joined: Sat Feb 08, 2014 4:22 pm
Location: Minsk, BY

by isharamet

mattr, no visible damage yet.

isharamet
Posts: 31
Joined: Sat Feb 08, 2014 4:22 pm
Location: Minsk, BY

by isharamet

Since it is impossible to find Loctite 609 in my country, will 641 do the job? What do you think?

em3
Posts: 887
Joined: Tue Dec 23, 2008 2:57 pm
Location: NYC

by em3

...which Loctite to use will ultimately depend on how buggered the BB's tolerances are. 641 has a slightly lower yield strength and recommended for smaller gaps, compared to 609 and 680. If your shell is only slightly off then 641 might do the trick. Be sure to use the recommended activator and then apply the Loctite liberally, set cups with a press and leave the press on for 24 hours. EM3
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by Weenie


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