could this new cassette technology come to get us?

[eddief]

http://www.cyclingweekly.co.uk/news/latest-news/will-game-changing-freehub-design-ever-make-market-157363

[witcombusa]

This has been done already with freewheels decades ago. It seems to answer a question nobody is asking...

It adds nothing to my cycling.

Here's pix of the Cinelli Bivalent system, same wheel could be used front of back

[Cicli]

Solution to not a problem.

[MattTuck]

Purely as a novelty, it would be kind of fun to go to a custom builder and ask for a bike containing as many proprietary 'standards' as possible. Ask for these things, ask for integrated brakes, some weird bottom bracket standard, headset, etc.

I'd do it over the phone, so you don't get punched in the face.

[Mark McM]

Keeping the driveside of the hub attached to the frame seems like an extravagant setup for little gain. But maybe there would be some advantage to keeping the non-driveside of the hub attached to the frame?

As has been mentioned in discussions on discs brakes in pro races, one of the potential liabilities of disc brake wheels is interchangeability and wheel speed changes. Disc brake have very little rotor/pad clearance, so there is little margin for error rotor positioning between different wheels. A mismatch of even a millimeter can result in brakes dragging.

But what if the rotor stayed with the bike when changing wheels? This might speed up wheel changes, as well as improving interchangeability of disc brake wheels. Consider F1 racing - wheel changes can be done in seconds, with no worry about the affect on brake performance, since the rotors stay with the chassis during wheel changes.

[bcroslin]

it's groundhog day. this was posted when it originally ran back in Feb.

[eddief]

what is old is new again.

it's groundhog day. this was posted when it originally ran back in Feb.

[ultraman6970]

Pfff.... that idea is like 50 years old if not more, did not work before; doubt will work now.

[unterhausen]

it's groundhog day. this was posted when it originally ran back in Feb.
funny thing is, it has been reinvented twice in the last 2 years. And the Bivalent was actually a reinvention of some system used on French bikes, the ones with the derailleur brazed to the chain stay. If the derailleurs made sense, then the hub system made sense.

If you have a Columbine chain keeper, it provides about 91.3 percent of the advantage of these systems

[palincss]

Pfff.... that idea is like 50 years old if not more, did not work before; doubt will work now.

What do you mean by "work"? Functionally, those systems worked just fine. Popularity, not so much. They were almost essential with derailleurs like the Cyclo that mounted under the chain stay because it was so hard to get the wheel out. With derailleurs that mount to the dropout and that can be moved out of the way, they're not necessary.

[bicycletricycle]

I don't think I would want an effectively split rear axle.


I guess there is nothing wrong with it, it would be nice for wheel changes, it would keep your hands a bit cleaner.

Not enough of a difference to bother IMHO

[nighthawk]

Purely as a novelty, it would be kind of fun to go to a custom builder and ask for a bike containing as many proprietary 'standards' as possible. Ask for these things, ask for integrated brakes, some weird bottom bracket standard, headset, etc.

I'd do it over the phone, so you don't get punched in the face.

Ha! Awesome.

[JeffS]

Purely as a novelty, it would be kind of fun to go to a custom builder and ask for a bike containing as many proprietary 'standards' as possible. Ask for these things, ask for integrated brakes, some weird bottom bracket standard, headset, etc.

I'd do it over the phone, so you don't get punched in the face.



I assume you're joking, but in reality, a lot of builders are dealing with this exact scenario on a regular basis.

[oldpotatoe]

http://www.cyclingweekly.co.uk/news/latest-news/will-game-changing-freehub-design-ever-make-market-157363

Been on motorcycles for a while.

https://www.youtube.com/watch?v=2dYIIqYNIk4