Woodman centerlock to 6-bolt brake rotor adapter for mountain road and cyclocross bikes

Woodman’s never short of a few lightweight and clever bits that change the way we think of components. He’s shown us cadence magnets that fit inside the pedal spindle, stem slamming headset caps and more.

Now, he’s come up with a unique take on the Centerlock-to-6 bolt brake rotor adapter that uses a two piece design to pull the rotor snug against the threaded “throwing star” nut. It’ll come standard with some of his hubs and also be available separately. Check out how it works below, along with a lightweight freehub body replacement option that provides gram savings without giving up the durability of steel…

Woodman centerlock to 6-bolt brake rotor adapter for mountain road and cyclocross bikes

The backplate slides onto the hub’s grooved Centerlock platform first, then you put the rotor over it. Once that’s in place, the “throwing star” is threaded on until it’s snug…

Woodman centerlock to 6-bolt brake rotor adapter for mountain road and cyclocross bikes

…and lined up with the rotor bolt holes. The rotor can be rotated with a little effort to get it lined up since the nut is only hand tightened.

Woodman centerlock to 6-bolt brake rotor adapter for mountain road and cyclocross bikes

To lock it all into place, the rotor bolts are threaded through the rotor into the back plate, which pulls it all snug. It doesn’t seem like it would, but it works, and once it’s all assembled, there’s really no way for it to come loose.

Woodman centerlock to 6-bolt brake rotor adapter for mountain road and cyclocross bikes

Weight for the two pieces is just 22.4g, which saves about 6.5g over a DT Swiss adapter and looks cool.

Woodman-steel-freehub-body-with-lightweight-alloy-core01

This prototype steel driver Freehub threads over an alloy body. Weight is about half of what a full steel FH body would be, and slightly heavier than a full alloy one but much, much more impervious to scarring from cassettes.

Woodman-steel-freehub-body-with-lightweight-alloy-core02

If testing goes well, it may be an option on his hubs in the near future.

WoodmanComponents.com

9 COMMENTS

  1. For the centerlock adapter, you wouldn’t be able to preload the nut as much as the DT adapter which seems like it would lend to noisy vibrating rotors. I’d give it a shot, but I don’t think that there is much wrong with DT’s approach.

    The steel freehub idea is pretty neat though. It would also be cool to have some sort of XD body adapter, that way they could ship all hubs with XD bodies and then use the adapter if you want to run a Shimano cassette.

  2. The steel hub body is a very interesting idea, but those centerlock adapters… seriously?
    It’s heavier than the DT adaptor (+12g for steel bolts) or a wash at best (+8g for ti).
    It wont hold a rotor as tightly since it’s threaded on tool free.
    And it has even more things to come loose: rotor bolts and a lockring.

  3. @gino,
    You do realize that all the rotor bolts have to completely fall out for the lockring to unscrew. Chances of that happening are quite slim.
    I do wonder if it’s a bit of a patent workaround, though. I remember that, although SRAM makes some center lock compatible rotors, they don’t come with the lockrings due to Shimano patents.

  4. Marcassin-I agree with you. A lot of brain damage when you can just get some SRT99 rotors and have the best rotors available and no adapter necessary. The adapter is a nice idea, but how expensive or precious can you rotors be, that you can’t just get the good stuff when you build your wheels?

    The steel freehub liner is an excellent workaround. Smart ideas from Woodman.

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