Centerlock disc rotor spacers

8/31/2017

As of late, I've been building some centerlock wheels. I have no real compelling reason to use centerlock vs standard 6 bolt as it seems that when viewed as a system, weights are equivalent (system meaning hub and rotor weight). The one advantage I have found is for travel, and only if you remove your rotors to bag or box your bike. Removing centerlock rotors is a 30 second endeavor vs a few minutes for 6 bolt rotors. Plus the convienence of handling one lock ring opposed to 6 little bolts. But I digress.

As cyclocross season approaches I'm faced with the challenge of having a quiver of 3 sets of disc wheels, 2 six bolt and 1 centerlock, all align with the brake caliper when changing wheel sets. With 6 bolt there are rotor shim spacing solutions currently available on the market. Unfortunately, I'm unable to find a rotor shim set available for centerlock. Soooo.... I'm making one! The set will fit a standard 35mm centerlock hub, not the oversized 46mm. They are stainless and .0075" thick ( about .02mm for the metric inclined). If you need a set, let me know as I'm willing to make extras!

7 Comments

Justin Morgan

11/28/2017 12:42:10 am

Hey, do you have any centerlock rotor shims? These buggers sure are hard to come by!

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12/29/2017 12:19:12 pm

That's a good thing to hear! You do not always need a reason as to why you must do certain things. Just make sure that you enjoy yourself and you are having a good time. Sometimes, we do things simply because we just feel like it. And that is completely okay as long as you are not hurting other people by doing what you do best. Always remember that you must never do anything that could cause harm to other people.

David

11/28/2017 08:06:31 am

Hi Justin- I emailed you a reply. I custom make them so let me know how many and how quick you need them!

12/9/2017 07:49:19 am

Hi David,

Currently on my Trek Domane, I've got some Bontrager Paradigms Comp wheels with Shimano RT99 Ice-Tech FREEZA Centre Lock Rotors (160MM). These are setup perfectly.

In addition, I've got a set of Vision Metron 40s, with Shimano DURA-ACE Ice-Tech FREEZA Centre Lock Rotors (160MM). Guess what...
When I swap these onto the bike the rotors are misaligned by at least 1.2 mm !!

Upon further investigation, by swapping over the rotors between the wheelset, I found that the problem actually lies with the rotors.

So I'm a bit disappointed with Shimano. I'm wondering if this is a QC issue or a design (flaw)?

Anyway, I'm now thinking of using shims to correct this. Can you deliver to London, UK? Also, I've taken some caliper measurements of the rotor hub - does this tie in with your measurements?

ID 35.6mm (Error=+-0.2, Resolution= +-0.1)
OD 38.9mm

Cheers, Al.

David Ferrett

12/11/2017 06:27:44 am

Hi Al-

Wow, shocked at how far off that is!

Yes, I can ship to London however it may be cheaper in the long run to ask a local machinist if he can make a little spacer. That said, I'm more than happy to help you out just let me know.

Also, I think I would contact Shimano on your issue to see what they have to say...

Ben G

6/22/2018 09:35:46 am

I think you mean they're about 0.2mm think, not 0.02mm? (The latter would be pretty darn thin!) In any case, how can I obtain a set?

6/25/2018 01:48:36 pm

Hi Ben, You are the first to catch my typo. It was supposed to be 0.2mm.

How many do you need? Feel free to contact me directly at david@ferretticycles.com

Centerlock disc rotor spacers

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