Centre lock vs 6 bolts hubs/rotors

[ishaw]

Just wondering which is best and why? Any ideas?

 

[BertR00t]

Re:

In my opinion 6 bolt because it is a standard whereas centrelock is a Shimano devised standard.

 

[syncrosfan]

Engineering wise the center lock system is superior. You're using the splined interface between the hub and rotor to transfer the torque instead of 6 smallish bolts. The locking ring is probably lighter too. That being said the 6 bolt solution offers you more component choices.

 

[Russell]

Without fail, every single Shimano centrelock rotor that I've used has been loose where the rotor joins the carrier so that with the brakes applied, there is fore/aft movement of the wheel. Rubbish.

6 bolt all the way.

 

[ishaw]

Thanks. The centre lock can also be adapted to use 6 bolt so perhaps more versatile if needed? Trying to decide between some xt hubs, 6 bolt or centre. Wheels I'm looking to replace are deore centre lock, my first set of hubs like this. I must say, torx head bolts are a pita as well.

 

[02gf74]

Engineering wise the center lock system is superior. You're using the splined interface between the hub and rotor to transfer the torque instead of 6 smallish bolts.

Actually that is incorrect. When the bolts are tightened correctly, the torque goes through the area of the two contacting surfaces. Ive not come across any cases where the bolts have sheared off during use.

I would choose 6 bolt as there is a wider choice of rotor. There is a tiny bit of play in centrelock splines but is taken up when the lockring is done up and you dont need an expensive tool, just a torx bit.

 

[syncrosfan]

What do you mean by expensive tool? I thought center lock lock rings are opened and tightened wit a regular cassette tool which literally everybody that works on bikes, even beginners have. A torque wrench is something you will need in both cases so it's a draw there. I think one is way more likely to round off a small torx head than a center lock ring in the real world.

 

[mattr]

with a regular cassette tool which literally everybody that works on bikes, even beginners have. A torque wrench is something you will need in both cases so it's a draw there. I think one is way more likely to round off a small torx head than a center lock ring in the real world.

I think you need to check the definitions of literally (or beginner) in a dictionary. And there are probably less torque wrenches in circulation than cassette locking tools.

And stripping a torx head (t25?) would indicate a high level of cack handedness. Probably not to be trusted around anything more complex than a hammer.

 

[syncrosfan]

Jeez, some people here on the forum get their panties in a knot really easily if somebody has a different opinion... I never said that there's anything wrong with the 6-bolt rotor setup. I have it on my bike and it works just fine (no stripped bolts there, if anything it' more retro). I would think that if somebody doesn't have a torque wrench available,it would be much easier to attain an even clamp force with a lock-ring system than with 6 individual bolts ( disclaimer, I'm just trying to use common sense about this, doesn't mean that I'm the ultimate expert in disc technology).

 

[greencat]

Re:

Don't worry about mattr, synchrosfan - he does this to practically everyone.
There is now even a thread celebrating his wit and wisdom:
viewtopic.php?f=8&t=327737

On the Centre lock v 6 bolts debate. One of my favourite systems was Kore's - it was a six bolt system without bolts. You simply placed the six bolt ring on the six studs on the hub, and then used a cassette lock ring to hold it in place. Extremely quick to switch discs and they were always perfectly aligned. Great for those of us who cannot be trusted with anything more than a hammer

Shame the spoke system on the wheel wasn't any good.