Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-14-10, 04:34 PM   #1
sirious94
Senior Member
Thread Starter
 
Join Date: Dec 2008
Bikes:
Posts: 697
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Campy/Shimano Cross Compatability

So i know that very few of the Campagnolo and Shimano parts are compatible with each other, but i was wondering if you could just swap out the crankset? If the bottom bracket is old (just the square kind, not octalink or BB30 or something like that) Can i throw on a campy crank and have it work fine with an old shimano group (deralleurs and STI shifters, BB 600/rsx mix).
sirious94 is offline   Reply With Quote
Old 02-14-10, 05:23 PM   #2
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,844
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
There are two smnilar square taper bottom bracket designs, ISO and JIS. Campy and a few European makers use ISO and Shimano and nearly everyone else uses JIS. They are not directly interchangable as the ISO is slightly smaller across the flats at the end then JIS. Sometimes the tolerance stack lets you use them interchangably but it's not reliable. As a general rule, match the bb to the crank.
HillRider is offline   Reply With Quote
Old 02-14-10, 10:03 PM   #3
ultraman6970
Senior Member
 
Join Date: Dec 2005
Bikes:
Posts: 7,860
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
U can get away with the set up like that w/o any problems. But in my opinion u have to check out the lenght of the shimano bb 1st.
ultraman6970 is offline   Reply With Quote
Old 02-15-10, 11:56 AM   #4
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,844
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
Quote:
Originally Posted by ultraman6970 View Post
U can get away with the set up like that w/o any problems. But in my opinion u have to check out the lenght of the shimano bb 1st.
MAYBE you can get away with no problems but it's by no means certain. JIS and ISO tapers are similar but not identical. Sometimes the tolerances add up so an ISO crank goes far enough up a JIS taper to be properly secure but not always.
HillRider is offline   Reply With Quote
Old 02-15-10, 07:20 PM   #5
ultraman6970
Senior Member
 
Join Date: Dec 2005
Bikes:
Posts: 7,860
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
U can get away with it...
ultraman6970 is offline   Reply With Quote
Old 02-15-10, 07:31 PM   #6
Steev
Senior Member
 
Steev's Avatar
 
Join Date: Jul 2005
Location: Backwoods of Ontario
Bikes:
Posts: 2,150
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
First you need to know the recommended spindle length for the crankset you want to use and the spindle length for the BB you currently have installed. If they are close, you may be able to fudge it all together, but it's way better to get a BB to match the crankset and do it right. There's usually a reasonably priced BB available.
Steev is offline   Reply With Quote
Old 02-15-10, 07:50 PM   #7
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,844
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
Quote:
Originally Posted by ultraman6970 View Post
U can get away with it...
I'm glad you are so sure. I'm not.
HillRider is offline   Reply With Quote
Old 02-15-10, 08:35 PM   #8
ultraman6970
Senior Member
 
Join Date: Dec 2005
Bikes:
Posts: 7,860
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes, u can get away with it. Probably will last years working fine. The OP asked if it was a problem to make them to work together... no, he can use the stuff mixed w/o any problem BUT as i stated before he needs to check out the length of that bb axle. Because the crank will be off a few millimeters of the chain line for sure.

This is a thing of semantic... can u do it? yes, u can... it is not recommendable?? No it is not (in the long term).

But how many people is using sugino cranks with shimano BBs? I bet there are a few guys using that combination w/o even knowing that the sugino craks are ISO and not JIS. In a matter of fact i met a guy that didn't know and now after 5 years delivering stuff in DC he finds out that he has the wrong stuff working together. His cranks are ok so far no even marks of possible problems in a near future.

I have seen the weirdest combination's of stuff working together when u have no money or you don't have where to get the stuff in your area or country. U have to improvise... I mentioned the problem the OP will have... "the chain line will be off". Campagnolo cranks can work fine in jis... that after 20 years might get a crack that's another tale. Differences are so minimal that is just like putting a shimano wheel in a campagnolo drive train... yes it will work but you will lose maybe 2 gears. so whats the big deal! all the drive train will fail for using it like that? nah... it is not recommended because u'll lose a few gears?? yes, i give you that but when no money comes around u become creative. On the other side...that a manufacturer say something doesn't mean it can't be done, why? liability maybe?

Another sure example is to use shimano cables in a campagnolo drive train...

At least italians do not say explicitly to get only their stuff or it wont work.


Cya
ultraman6970 is offline   Reply With Quote
Old 02-16-10, 06:16 AM   #9
Kimmo
bike whisperer
 
Kimmo's Avatar
 
Join Date: Dec 2009
Location: Melbourne, Oz
Bikes: copy/paste links: http://velospace.org/node/36949 http://velospace.org/node/47746 http://velospace.org/node/47747
Posts: 7,099
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ultraman6970 View Post
it is not recommendable?? No it is not (in the long term).
Not even in the short term if it messes up your chainline and maybe gives you a ridiculously wide Q.

Worth trying on, though
Kimmo is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 12:52 AM.