Campy Record 2007 Hubs and radial spoke pattern..

[GoLefty!!]

According to campy, radial spoking is not allowed on their hubs. However I have looked into this carefully and have noticed that boutique wheels using radial spoking use a far more flimsy hub than the Record. So this infers that it is strong enough and Campy is just coveringhtemselves against inexperienced wheelbuilders.

 

HAs anyone built a Campy Record hub into a wheel and used radial spoking? Has it lasted.

Johan I guess this question is right up your alley.

 

I plan to use Sapim CX-Ray Aero Spokes with an Ambrosion Excellite rim, 32H. How high can I tension it before I hit the unsafe zone? The hub seems to havemore meat on it in the direction of pull when compared to others.

 

Experiences? Advice?

lay iton me

[TitusTi]

Nice choice of spokes and rims. As to the non-radial building, if I was you I would listen to what they have to say. DT make a radial and non-radial compatible hub. You can put a hell of a lot of tension on the combination, the exact figure would depend on the tensiometer you're using, the PT one measures deflection whereas other measure actual tension, bu this changes depending on the spoke. Generally you won't hit the danger zone on a wheel due to the nipple trying to round itself.

[GoLefty!!]

Thanks Gav.

 

The DT's are expensive and I don't want to drop that much cash on my dark side bike. If it was for the MTB I'd be Blinging it on..

 

I still prefer the Record for the name, groupset compatibility and longevity.

I guess 2 cross on the front wheel would look shyte.....huh?

[Mudsimus]

Is the record hub aero spoke compatible? I've got a very old radial spoked wheel with a campag hub, no problem.

[GoLefty!!]

The Sapim CX-Ray aero profile will fit through the round spoke hole in the campag hub. no problem there. Just concerned about hub flange failure.

[Johan Bornman]

Tim, I agree with your observations. In addition to what looks like a beefier hub compared to botique hubs, your record hub is also forged, making it that much stronger than CNC machined hubs.

 

Shimano issues exactly the same warning. It also forges its hubs.

 

I don't build radial wheels on Campag and Shimano hubs unless the customer is prepared to carry the risk.

 

However, I've not yet had a failure either.

 

If it were my wheels I would be prepared to put up with the risk. I've seen photos of a flange breaking off but never an actual broken flange.

 

Tim, you asked how you can tension it so that you are within the safe zone?  You can never know what this zone is unless you determine it experimentally. However, you are using lightweight rims (don't know how many spokes though) and the rims will collapse before you exceed the hub's maximum tension - gauranteed. Failing that (in the case of you using 28 spokes or less) , the spoke nipples will gall or round off long before anything will break.

 

Someone else mentioned earlier on in this thread that the spoke tension is what causes flanges to break. It is not. Spoke tension is about 1 third of the tension you create when stress relieving the wheel. If the flange was going to break it would break during stress relieving and not afterwards. Therefore a wheel that survived stress relieving will be safe forever.

 

Titus mentions the use of a tensiometer. That will be useless to you since you're now in experimental zone and without an absolute tension figure (for the exact quantity of spokes you're using) the tensionmeter can only tell you if your spokes are more or less evenly tensioned. This is best done by other means since the device's error is larger than the tolerances that will give you a round and true wheel.

 

Why not build this wheel yourself? A tech-savvy guy like you will derive great pleasure from doing this. I have a self-help book on this topic and I can put you in touch with one of my brilliant ex-students in Cape Town to give you some advice if you get stuck.

 

 

[GoLefty!!]

Thanks for the offer and will gladly accept.  First I must order the parts.

I need to mop up some of the details with the build like nipple colour, that is important 

 

I too prefer the forged hubs, well forged anything really. CNC is really a finishing process and needs to be controlled to ensure grain structure is not altered. It's wholey unsuited to the manufacture from start to finish of stressed goods. There is applications in prototyping blah blah you already know this...

 

So the Record Hubs are now cast in concrete.

The Sapim spokes are almost a done deal

The rims are also chosen and I will not waiver.

 

Now i must learn to build them myself, then my training as bicycle jedi will be complete.

 

BTW, I truelly hope that Shimano releases a road version of the XTR mtb wheel. That is the best upgrade anyone canmake to a MTB.