Options to go to 220mm discs with centerlock?

[spacemonkey]

Hello,
I want to upgrade my brakes with 220(223)mm discs , coming from 203mm.
Now I’m on shimano XT brakes with centerlock hubs. Would like to keep my hubs.
Does anyone know if this is possible and which brands I can get.

From a previous ebike I have Magura Mdrp floating disc 220mm, but this is 6-bolt. I do know you can get an adaptor from Galfer to use this on centerlock hubs. But on the website it says NOT to do this? I guess it could fail…

Anyone tried this?

 

[VWsurfbum]

I'd be worried about that amount of retardant force going through a center lock at 220mm.

 

[spacemonkey]

I'd be worried about that amount of retardant force going through a center lock at 220mm.

That’s exactly what I want to know…
Can I assume a 6-bolt setup is stronger than center lock?

 

[MadTurnip]

That’s exactly what I want to know…
Can I assume a 6-bolt setup is stronger than center lock?

From a design point it must be as its mount points are part of the actual hub putting the weakest point as the screws themselves which must be 2-3mm wide. While the centerlock rotor is gripping on <1mm sized spines. I don't have any numbers to backup this opinion though.
It would probably come down to your weight if your under 100kg maybe you would be ok.

 

[Beer Man]

I used these

Shimano SM-Rtad05 Disc Rotor Adaptor | Jenson USA

www.jensonusa.com

and these

SRAM Centerline Rotor | Jenson USA

www.jensonusa.com

On my norco vlt range. Swapped to Saint brakes, and the brake power is awesome.

 

[Mteam]

Shimano launch huge 220mm discs for 10% extra stopping power

If you’re in the market for more powerful anchors then check out these oversized discs from Shimano. Disc brakes are, in general, a very effective and powerful way of bringing your speed unde…

singletrackworld.com

This article here says Shimano do 220mm centerlock discs, so the centerlock system must be good for 220m discs

 

[MadTurnip]

https://www.bike24.com/p2349104.html

Most other places are sold out.

 

[mtb-steve]

As long as the centre lock ring is tight and no wear is taking place I'd say the centre lock is stronger.
I'm an engineer by the way so I'm not just pulling this out of thin air, however I've not done any calculations so maybe I am

 

[Farmernz]

I used these

Shimano SM-Rtad05 Disc Rotor Adaptor | Jenson USA

www.jensonusa.com

and these

SRAM Centerline Rotor | Jenson USA

www.jensonusa.com

On my norco vlt range. Swapped to Saint brakes, and the brake power is awesome.

Nice, do you have a picture? How does the magnet work? Just keen to fit my range with better stopping power too. Cheers

 

[Stihldog]

As long as the centre lock ring is tight and no wear is taking place I'd say the centre lock is stronger.
I'm an engineer by the way so I'm not just pulling this out of thin air, however I've not done any calculations so maybe I am

The center lock rotor does look stronger but the industry standard seems to be 6 bolt. I’ve never used or even seen a center lock rotor. Most new hubs I’ve seen are 6 bolt systems and higher POE than the original 30-50 POE hub. So I can’t say which is better.

I use the Magura MDR floating rotor. 220mm on the front and 203mm on the rear. I believe that the rotor ring is slightly thicker so there is less chance of warping and they last longer. However, if you install a poorly manufactured one they can sound like a tambourine while you’re riding. I believe that the riveting is not secure which is likely a manufacturing issue.

Using a 203mm on the rear and a 220mm on the front seemed to equalize the braking modulation for me. The braking on the rear was less sensitive and therefore less wheel drag. That can save excessive wear on the rear rubber and save the trail at the same time. A good set of hydraulic brakes and proper pads for your riding style helps. Don’t interchange composite brake pads and metallic brake pads on the same rotor …unless you like the sound of howling brakes.

Heat dissipation helps also for those long descents. I’ve had my cheap 203mm rotor heat up the rear calliper once. Not to funny descending a rock garden with front brakes only. My scars and helmet agree.

Most of us use 203mm rotors on the rear that are slightly thicker and dissipate heat. 220mm on the front.

 

[Beer Man]

Nice, do you have a picture? How does the magnet work? Just keen to fit my range with better stopping power too. Cheers

I just glued on a small magnet. works great.

 

[Bones]

These turned up today
The 220 rotor is only SLX and 1.75 mm thick so I can't see it lasting long, but its only for occasional use at bike parks with organic pads.
The TRP disc fitted is 2.3 mm thick and just fits in the XT Calipers.
Around 40 pound for the disc and bracket . I will report back from hospital if it's no good

 

[irie]

...
Most of us use 203mm rotors on the rear that are slightly thicker and dissipate heat. 220mm on the front.

I'm evidently an exception with 220mm rotors front and rear, and use both my front and rear brakes together depending on conditions and lean angle.

Edit: together

 

[TtheArab]

Just ordered SM-RT64 220mm for back on my Orbea Rise to move up from 203mm. Comes with magnet etc so no messing about with gluing / drilling etc.

I have the M6120s (4 pot) that I fitted from having the bike new and from reading countless reviews can't seem to find enough compelling evidence to go spend £400-500 on Hope Tech v4s or Magura MT7s.

Will let you know how it goes.