Triple BB? 111mm Campag are the double and triple the same?
redddraggon
Posts: 10,862
Comments
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more axle sticking out on the right side0
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Apart from the old Chorus and Record triple bottom brackets (which only fit Record/Chorus cranks) Campag BB axles are all symmetrical, so the double BB and the triple one are the same. The 111 mm axle is for a standard frame, the 115.5 mm `triple` one for frames with a fat seat tube.
By the way, if you are looking for a new BB only buy the Comp/ Centaur quality one, the cheaper ones are plain nasty being heavy and having no sealing.0 -
aurelio wrote:By the way, if you are looking for a new BB only buy the Comp/ Centaur quality one, the rest are nasty being heavy and having no sealing.
I was actually thinking the other way, being able to buy a chorus triple and running it off the BB I have now. I only want the triple for odd rides, a normal sufficient most of the time, and I don't want the hassle of having to swap out BB everytime.0 -
See my edit! Chorus and Record chainsets require a Chrous/Record BB. (For one thing Chorus and Record BB`s are asymmetrical). From what I can make out if you fit a Chorus Chainset on a lower range BB will stick out miles! Some places are selling off the older Chorus/Record BB for about half of what they were new. Get one whilst you can, it will be worth it as the bottom range Campag BB`s are junk and without the right BB your chain line will be miles out!redddraggon wrote:I was actually thinking the other way, being able to buy a chorus triple and running it off the BB I have now. I only want the triple for odd rides, a normal sufficient most of the time, and I don't want the hassle of having to swap out BB everytime.0 -
aurelio wrote:
See my edit! Chorus and Record chainsets require a Chrous/Record BB. (For one thing Chorus and Record BB`s are asymmetrical). From what I can make out if you fit a Chorus Chainset on a lower range BB will stick out miles! Some places are selling off the older Chorus/Record BB for about half of what they were new. Get one whilst you can, it will be worth it as the bottom range Campag BB`s are junk and without the right BB your chain line will be miles out!redddraggon wrote:I was actually thinking the other way, being able to buy a chorus triple and running it off the BB I have now. I only want the triple for odd rides, a normal sufficient most of the time, and I don't want the hassle of having to swap out BB everytime.
Sh*t - I bought a cheapie to run with my cheap 2006 chorus triple crankset. Given the price of the Chorus/Record BB's I was thinking about spending a little more and getting a phil wood hub as it'll probably outlast me. Do you know anymore details about the differences? Or alternatively is anyone able to provide measurements for the BB axel on the drive side?0 -
I wish I could help more but my local shop assured me that Chorus and Record chainsets need a Chorus/Record BB and that the Chorus/Record BB won’t work with other chainsets. I was skeptical but the Campag site seems to back them up. The shop wasn’t willing to order a Chorus BB on spec for me to measure it up, assuring me it simply wouldn’t work. They were probably right, just look how different a Chorus/Record double BB is to the others, being just 102 mm Long.Graham G wrote:Sh*t - I bought a cheapie to run with my cheap 2006 chorus triple crankset. Given the price of the Chorus/Record BB's I was thinking about spending a little more and getting a phil wood hub as it'll probably outlast me. Do you know anymore details about the differences? Or alternatively is anyone able to provide measurements for the BB axel on the drive side?
If anyone knows better I would also like to know!
By the way, The TX Axix BB used to offer a good alternative to a Campag BB, but now this BB uses a JIS taper designed for old-style Shimano Cranks0 -
I'll do some digging then, cheers!0
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Older (pre 1993/4[-ish]) Chorus and Record BBs were 111mm and symmetrical. The most recent (pre dodgy-torque) Chorus and Record were 102mm and symmetrical. Veloce & Centaur in their last square taper configuration were 111mm & symmetrical. The Veloce was (is?) a FAG unit, heavy, but decent enough. The Centaur one is decent. Triple BBs are asymmetrical - you'll get your right foot further outboard if you use one of these, and on the left side you'll have a crank way close to the chainstay, even if it doesn't touch.
You could, of course, use a Record track BB, which does not have the double sealing (i.e. the lip seal of the bearing unit and an additional seal) of the road units but will work well enough. After all, just the lip seal (as found on the track BB) is what many other BBs rely on.0 -
i'm using a chorus bb which had a veloce double on it on the bike i bought it with . it's now gone into another frame and got a centaur triple on. chainline is spot on/ was spot on with both chainsets.0
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I happen to have my spare Chorus triple bottom bracket lying around and have given it a quick look over and measure.
In terms of distance of visible taper from end of cup to end of axle they are exactly the same both sides, the thickness of the ends of the cup (ie the depth of the splined area to the cartridge body) are the same both sides (about 3mm). The triple bracket has a 2mm lip on the drive side...which initially made me think that the offset is only 2mm until I remembered the later improved Centaur 111mm bracket also has a lip on the drive side (as opposed to the old Athena bracket which fitted flush on both sides...and it's replacement that had FAG style lipped cups on BOTH sides.
What I can say is the nature of the asymetric bracket is very subtle and is not a 102mm bracket with 9mm extra on the drive side. You'll notice that the lefthand crank for, say, the Record double and triple cranks have different part numbers in the spare catalogue.I'd rather walk than use Shimano0 -
What you say is almost certainly true of the Chorus and Record triple set ups, but I have a Racing Triple chainset and 111 mm BB and the cranks are definitely offset symmetrically and by a fair old distance at that!pliptrot wrote:Triple BBs are asymmetrical - you'll get your right foot further outboard if you use one of these, and on the left side you'll have a crank way close to the chainstay, even if it doesn't touch.0 -
Thanks for that Rob - I'll get the proper Chorus BB so that I can have confidence in the correct chainline and then maybe look at replacing it with a Phil Woods job whenever it needs replacing.0
