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EB14: The Amazing Frictionless Chosen Smart Hub Freehub Spins Freely in Both Directions

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Chosen Smart Hub frictionless freehub body that spins freely and silently

Chosen is a Taiwanese hub manufacturer that is happy to work with you to bring your own projects to life. But that doesn’t stop them from bringing a few of their own clever ideas into existence either, and the Smart Hub is one of the more clever we’ve seen.

Inside is their Close Drive System, which allows the pawls to remain closed during freewheeling. When pedaling forces are applied, they open to engage the teeth on the inside of the hub shell, then immediately retract when not needed. The benefits are threefold: No pawl friction, no coasting noise, and the ability to freewheel forward or backward without moving the chain.

That latter feature means no chain drops from backpedaling. It also means you can pull your bike out of a crowded rack without having the pedals catch as they spin. And for folding bike owners, it means you can push or pull your folded bike in any direction without the cranks getting jammed up. Spin on down to see how it works…

Chosen Smart Hub frictionless freehub body that spins freely and silently

A circular spring holds the pawls down when coasting. The Close Drive System is activated when pedaling and combines the movement of three small steel roller balls to twist the bronze piece to wedge the pawls upward.

Chosen Smart Hub frictionless freehub body that spins freely and silently

Visually, it’s a little difficult to explain, but you can see it working. This video shows the internals:

It all comes together in a very normal looking package:

Chosen Smart Hub frictionless freehub body that spins freely and silently

They introduced the concept in 2013, but this is the first we saw it. Their rep said they’re working on thru-axle versions to bring it up to speed with modern bikes.

What’s really interesting is that without any pressure on the hub’s axle, the freehub will spin completely freely in both directions and simply can’t be activated. But, put sideways pressure on the ends (as would happen when it’s clamped into a frame) and it works like magic. It’s pretty insane.

chosen fat bike hubs

They also make a wide variety of standard hubs, too, including some for fat bikes. The Smart Hub is available in 130mm and 135mm spacing for road and mountain bikes, letting you sneak up on folks from behind on both pavement and trail.

Chosen-Hubs.com

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32 Comments
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Xris
Xris
8 years ago

They came out with a freecoaster for mountain and road bikes. Neat!

Mike Bechanic
Mike Bechanic
8 years ago

The video was pretty cheesetastic but the hub actually looks pretty cool.

peter
peter
8 years ago

You realize this is just a modification of a prototype Premium brand free coaster. And it inherently has drag when pedaling where normal hubs are low friction.

CR
CR
8 years ago

Will they be coming out with a driver version? If so this could be a game changer. The only MTB-spaced freecoaster hub is notorious garbage. I’d buy one of these in a heartbeat.

Doinkin
Doinkin
8 years ago

Uhhh, your chain is still going to do the same thing it always does unless you’re traveling backwards but as a mtb freecoaster it looks sweet.

Joe
Joe
8 years ago

it won’t stop chain drops from back-pedalling… think about it… when you back-pedal the chain and cassette spin backwards regardless of the freehub mechanism. it’ll stop chain drops from rolling your bike backwards when you’re not on it… but not back-pedalling.

that guy
that guy
8 years ago

pedaling backwards and moving the wheel in reverse are not the same. you can still drop the chain if you pedal backwards just fyi

mudrock
mudrock
8 years ago

Damn, I want one.

Dockboy
Dockboy
8 years ago

I wonder how tough these will be- can they take dirt jumping?

Bog
Bog
8 years ago

Too bad they can’t make a decent freehub body to save their lives. Failure after failure on my Reynolds hubs shows how poor their design and engineering skills are.

Endurobob
Endurobob
8 years ago

I wonder if clamping that hub too tightly or too loosely will mess with the freehub…I would hope chosen has thought of that.

jon jon
jon jon
8 years ago

MIT FTW

iperov
iperov
8 years ago

its already selling on taobao, I will buy

Zoni
Zoni
8 years ago

Looks Familiar…

craigsj
craigsj
8 years ago

I suspect the engagement on these hubs is quite slow considering it involves the usual pawl engagement angle plus the rotation required to engage the pawl. This will make it less popular with the MTB crowd. Roadies aren’t continuously starting and stopping so it’s not clear who this helps. Energy losses are small when not pedaling and non-existent when pedaling anyway, plus some riders prefer hub noise especially on the trail. Wouldn’t mind it on a commuter.

Seems like a compromised solution to a non-problem. Wouldn’t gamble on this as an unproven product.

Ripnshread
Ripnshread
8 years ago

(deleted)

anonymous
anonymous
8 years ago

(deleted)

Bill
Bill
8 years ago

its the ultimate winning strategy

Peter
Peter
8 years ago

they make Stans 3.30 hubs

Padrote
Padrote
8 years ago

(deleted)

Dan k.
Dan k.
8 years ago

Im pretty sure the bmx company Eclat has a design very similar to this… A pawled freecoasting hub will revolutionize things in the freestyle world…makes riding more fun and fluid. Current freecoaster designs have a lot of drawbacks and are usually garbage.

Josh
Josh
8 years ago

(deleted)

Alex
Alex
8 years ago

I think it’s good idea for the touring bike but not for the MTB.

rodeo
rodeo
8 years ago

Its a freecoaster hub. They’ve had in bmx bikes forever now.

Tom
Tom
8 years ago

Looks like the design pushes the drive side main bearing further into the shell, which is not good for durability or rigidity of the system

Ripnshread
Ripnshread
8 years ago

Why would you delete my comment lamenting the fact that after all these years these far East companies have not had the where with all to hire someone who actually has a firm grasp of the English language??? Companies like Chosen/Token spend all this $$$ to make a video or an ad in a magazine that is immediately seen as a sup par joke only because they didn’t take the time to have an English speaking/living agent look at the copy before it got out. Its just sad. They could freaking email me and I’ll do it for FREE. Makes them seem like a joke even if their tech/product is viable.

James
James
8 years ago

I wonder what engagement is like? If it’s anything like a free coaster you can forget it!

esc8engn
esc8engn
8 years ago

STILL getting some of these benefits, plus fast engagement, from an old shimano silent clutch rear hub. can’t understand why those went away.

gabbia
gabbia
8 years ago

@Ripnshread- funny you make fun of their grasp on the english language. Don’t you mean “sub” and not sup?
Would like to ride and see how it is…

Petter
Petter
8 years ago

Would this hub eliminate pedal feedback on a full sus?

caloi
caloi
8 years ago

atleast its manufactured in taiwan not from mainland china.

Merida 96
Merida 96
7 years ago

Hi everyone, did anyone use one of these? Any reviews? Planning to buy one. Thanks

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