I've just taken delivery of some very nice Hunt Gravel wheels,they're Centre Disc lock.
Now the problem??is that on test braking whilst standing there's a very tiny movement from Disc/hub?
The torque rate on lockring is I think 40n,I haven't a wrench fitting for lockring socket but I've tightened well without wrapping the nuts off it.
Brake caliper bolts are tight I've a torque wrench for those,no movement in headset.
Off the bike it's still there,must be about 1mm,is this right?I fear so,it's been a while since spannering around so may have missed something
Just to be clear,it's a 160mm TRP centre Disc Rotor on a Hunt 10mm hub adapter with a DT Swiss 10 bolt through.
Hope that makes sense.
Ta.
Not unusual for centrelock. The movement (or lack of) is reliant on the fit between the splines. There is nothing to tighten.
Thanks Nick
Centrelock rotor, or 6 bolt on an adapter? In the latter case I had that with a cheap eBay aluminium adapter. Swapped to a Shimano adapter with steel lockring and more pronounced serrations on the mount - problem went away (in fact it was a tight old fit getting it on the Shimano hub).
No,no adaptor,rotor straight into hub.
I confused tings there using'adaotor' too many times.
No just a centre lock rotor on hub.
Seems pretty standard for centre lock, mine do it too
Or is it the pads moving in caliper
Maybe so Nick/mashr,I've not had centrelocks for sometime and as you know there's none on 6 bolt set up.
Edit.I didn't know there should be,I guess it's a compatibility thing,minimal tolerances etc.
Never thought of that bruneep,but defo movement around the fitting area where rotor attaches too main hub body.
Mine don’t move unless not tight. On DT 240 and 350 hubs.
What lockring is it? Does it have a thin captive washer?
Lockring is what came with wheels and yes has the Ali washer
I’d speak to Hunt. Shouldn’t be any movement.
I didn’t think there should be movement either when I got mine. However a previous thread had loads of folk saying it was normal
Thanks guys for your input
Hopefully there's no hub explosions in near future.
Cheers
The spline is a sliding clearance so will always have movement - usually the lock ring will prevent it moving but not always. It should only be minimal movement - feel it but not see it sort of thing
Check that the hub/axle adaptors are tight (assuming it has them).
The spline is a sliding clearance so will always have movement
No more than a bolt in a hole. Once correctly torqued, the friction between the rotor and the hub should prevent any movement.
I have a number of centerlock wheels. None of them exhibit this behaviour. I tend to favour the brake pad suggestion.
No more than a bolt in a hole. Once correctly torqued, the friction between the rotor and the hub should prevent any movement.
I have a number of centerlock wheels. None of them exhibit this behaviour. I tend to favour the brake pad suggestion.
+1
Mine are rock solid.
Yes tj,there is minimal even when not tightened just looking but can see movement aswll as feel when tight
Hear you scotroutes as bruneep says could be but can defo see.
Will fire over mail too hunt,hopefully get some info
It doesn't help when your on the ocd spec, unfortunately I'm like it at work (construction) when no need to be at times,just have a keen eye and a sense something doesn't feel right.
I'll get torqued correctly and go from there,if no change will go from there.
Yes tj,there is minimal even when not tightened just looking but can see movement aswll as feel when tight
Can you move the disc by hand or is it only by applying the brake?
My sonder with hunt CL wheel does this, but its the sram pads moving in the caliper not the disc in the hub.
DT swiss CL on MTB with formula brakes doesn't have any movement
No movement from Disc in hand off bike, only when on bike whilst stand braking.
As you can see my vocab for components is limited,but I'm sure it's coming from housing around spline area over hub???
I wonder,RX4s are pretty shall we say grippy.
it it's the splines moving, which it could be based on tolerances to allow it to fit on without being an interference fit and if the tightening isn't quite enough, then assuming you don't have a reverse gear then on first braking the movement will move it to one end of the tolerance and then there's nothing to move it back.
ie: riding it compared to rocking back and forth on the stand, you won't have any movement anyway
should prevent
being the operative phrase. I have seen it when the lockring is properly tight. I put it down to a lot of grease
Thought did actually cross my mind as said by n&m up top.
Thanks tojv
I've often used a couple of wraps of PTFE tape to take the minimal movement out of the splines/rotor interface.
Pads can knock back and forth also though.
Yes, it happens. You can see that the disc doesn't move at the caliper, and yet the wheel is moving 'inside' the disc. I think some wheel / rotor / adapter combos are worse that others. I ditched SRAM rotors for Shimano which helped. It's been less of an issue for me when using a 6 bolt rotor and an adapter. A little more torque can normally fix it.
As jonv says you won't be doing any braking in reverse so I wouldn't worry, 6 bolt discs always have a little play until they are tightened down.
