A Belgian inventor, Jan Deckx has come up with, what he believes to be a better solution to rear wheel removal. With the D-Fix system you do not have to remove cassette and can leave it behind, attached to the bike

When you remove a bike wheel, perhaps to repair a puncture, you have to drop it into the smallest ring and then separate the chain from the cassette. This often gets your hands dirty and can be a bit of a fiddle in certain situations. To counter this Jan Deckx has come up with another system.

Jan has developed the D-Fix rear hub which attaches the cassette to the wheel in a different way. This means that the wheel can be removed separately, leaving the cassette behind. This could be useful for cleaning, maintenance and putting your bike in a car, as it doesn’t leave the chain dragging against the frame. The mechanism is a sort of spring loaded quick release through axle that slots inside the cassette free hub.

If you’re a little sceptical, check out the video above.

Whilst the hub is not currently being mass produced, Jan does provide his email address so that potential investors can contact him.  We would love to see Duncan Bannatyne’s take on this.

  • Ol_Rappaport

    Didn’t Ron Kitching market something like this back in the 70s?

  • Alex_nma

    Nothing new. I can’t think of the name of the company at the moment, but it was one of the classic Italian companies, that already did this about 30 years ago

  • sbarner

    It’s as great an idea as it ever was, though no one seems to have been able to make it both as simple and as reliable as “standard” cassette hub designs. The tipping point to making this a concept that might get enough traction to move it along after 80 years could be the synergy between the acceptance of carbon rims and the resulting increased interest in hub brakes as a means to avoid the heating issues associated with calipers, as this could lead to a move to larger diameter axles, and the increased market tolerance for proprietary systems, none of these being evident in the Cinelli Bivalent days.

    But this product does deserve an award for the worst promotional video, ever. I think it’s got Gigapudding beat, hands down. It’s downright painful to watch.

  • If I was worried enough about it, I would get an IGH.

  • Algis

    Brilliant Jan!

  • Dan Drown

    is this because you dont want to get your hands dirty? Also there’s not much time difference in getting the wheel out and putting a new one in and I agree with the comment that the 2 part axle creates a weak spot.

  • Jan


  • Samuel G

    Sunbeam probably looked at the idea in the 1890s….

  • ian franklin

    Incidentally, our engineering drawings were hand dated and lodged with a lawyer two years ago.

  • ian franklin

    We approached SRAM, Campag and Shimano with an idea similar and better than this one. Originally Cinelli patented this in 1935 as the Biavelent (spelling?) Hub. An American guy tried a similar idea with a patent a few years ago but it was cumbersome and did not work too well. We have engineering drawings of this in a much better format. We did not apply for patents because of the cost. But the engineering drawings are there if someone wants to partner us with this idea. It is superior to this Belgian’s. There are many advantages to this system and would be perfect for electronic systems.

  • paulrbarnard

    Sorry too busy designing rockets right now. A single turn cam design would be trivial though. These things exist already on many products. I have one holding the filter onto my vacuum cleaner…. Push in the QR, half turn to engage a cam into slot then close the lever to tighten.

  • My 1967 Cinelli had the Bivalen hubs. There is nothing new here. And yes Shaun2 is correct, the front and rears were interchangeable. I am finding that being an old cyclist means we have seen everything…

  • Jan

    All the patents I saw had a problem with weakness.

    This is solved in D-Fix.

    I made the original construction in a way that, if the axle would move for just 0,1mm the wheel would block.

    It never happened. Meanwhile I did about 10,000km on this.

    Mont Ventoux, Alpes, cobble stones, Liege-Bastogne-Liege name it and still running like clockwork.

    “I’m not sure what’s keeping the entire hub together but it looks like the quick release is the main component keeping everything together. That’s a 5mm rod…”

    No, it’s not a 5mm rod that does the job.

    The novelty searches that are been done before I went for a patent showed me that my idea didn’t exist.

  • shaun2

    Search for Cinelli Bivalent wheels of the 60’s. Same deal. Front and rear were interchangeable. i sold a set on ebay for a small fortune. But with modern engineering they could see a comeback.

  • Bruce T.

    In fact it has been patented at least in the U.S. Samuel G. is correct, the idea has been around for a long time. The issue has been rigidity and strength. The Liberty Wheel Systems design – of which this is a very suspicious look alike – solves that problem.

  • Gordon Morris

    Stiffness. A standard rear hub, say a DT 240, has a 17mm rear axle that goes from dropout to dropout. That takes the strain of the power the rider applies so that the quick release doesn’t have to and the cassette stays solidly in place.
    This uses a 2-part axle, which creates a weak spot. I’m not sure what’s keeping the entire hub together but it looks like the quick release is the main component keeping everything together. That’s a 5mm rod… and if it were to break I’d imagine the hub would come apart and you’d break your rear triangle around the drive side dropout due to the torque.

    I could be wrong… but I’ll wait for you to ride it for a few years before being willing to try it myself.

  • Samuel G

    not a new idea! the coupling mechanism might be patentable but the principle of the sprockets remaining in the frame has been around for a long time (source: Jan Heine ”The Golden Age of the Handbuilt Bicycle” page 112 shows a Rene Herse from 1952 with this feature)

  • Laurie Nicholas

    Come on the internet, tell me why it’s not going to work.

  • Holden Flabcock

    Wow such genius, you invent one.

  • paulrbarnard

    Interesting but would be better to have a single turn action on the QR rather than the thread he has now.

  • Tom Bourne

    The only problem I can see with this is having to wind the QR out. Apart from that what a great idea. A great bit of home inventing!