Can i convert my front disc to a larger size. MTB. But....

[Tony1963]

2017 Cube Analog 29er.

The discs are riveted to the hub, or to an adapter mounted to the hub. The hub is centre lock, Shimano HB-TX505.

Is there a conversion so I can just bolt a larger disc, standard 6 bolt, or do I need a different hub?

As an aside, must be a pain when it comes to standard disc replacement!

[AceKid]

Ive upgraded my wifes Cube Analog to 180mm disc from the standard 160mm, the disc isnt riveted to the hub, the rivets are part of the disc centre lock mount.
Just purchase some larger centre lock discs (i got the lighter shimano icetec ones),
To remove the old ones you need an external bb tool, just unscrew the old one, pop on the new one and tighten it up.
You then also need a caliper adapter (in my case it was a SM-MA-F180P/P2)
nice and simple.

[RapidRob]

As above https://www.youtube.com/watch?v=3HPMfaDteKg

[Tony1963]

Thanks for the replies. I've just found this https://bike.shimano.com/en-EU/product/component/d...

That looks just the ticket.

[Your Dad]

Tony1963 said:

Thanks for the replies. I've just found this https://bike.shimano.com/en-EU/product/component/d...

That looks just the ticket.

Why get a 6bolt to center lock adapter? Just purchase larger center lock rotors and the correct size adapters for the callipers.

[Tony1963]

Your Dad said:

Why get a 6bolt to center lock adapter? Just purchase larger center lock rotors and the correct size adapters for the callipers.

Well, ‘if’ someone hadn’t realised there were such things as centre lock rotors, and didn’t look before ordering....

[Tony1963]

And as it happens, centre lock discs are pretty much sold out anyway.

[cml24]

Stupid question perhaps,as I don't have disc brakes on current bike. But why would bigger rotors be needed?

Is this the same as a car in that the discs are getting too hot and the brakes fading?

[lufbramatt]

Bigger diameter = more braking torque

I’ve just gone from 185 to 203 on the front of mine and it makes a noticeable difference to stopping power.

[gazza285]

cml24 said:

Stupid question perhaps,as I don't have disc brakes on current bike. But why would bigger rotors be needed?

Is this the same as a car in that the discs are getting too hot and the brakes fading?

More disc area is better for heat dissipation, and lever efforts are lower for the same braking force.

[Tony1963]

I’ll be honest: I just wanted a bigger disc

Also, I would’ve been needing new discs soon anyway (225lb bloke) and the standard resin pads overheated when needing to perform. The difference in cost is pretty much down to the caliper mount adapters. No brainer really.

[TheGinger1]

Just make sure the disk is within the max size limit for the fork. 160 -> 180 should be fine, as would 180 -> 203, but unlikely your fork is built to withstand the increased force from 160 -> 203

[Tony1963]

TheGinger1 said:

Just make sure the disk is within the max size limit for the fork. 160 -> 180 should be fine, as would 180 -> 203, but unlikely your fork is built to withstand the increased force from 160 -> 203

Yep, it’s within what the Rockshox website says.