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  • Alex

    The whole rotating vs. static mass for a bicycle has very little effect in the real world. The wheels are not nearly spinning fast enough for it to matter.
    http://weightweenies.starbike.com/forum/viewtopic.php?p=60824#p60824

    • velocite

      I can’t disagree with your statement but I think that link makes a bit of a meal of it. Whether the mass is rotating or not is irrelevant unless the bike is accelerating. If it is accelerating then weight at the rim counts for about double, so an extra 100g at the rim will resist acceleration as much as 200g on the frame. But..the extra energy required in the acceleration is not lost, it’s retained as momentum in the rotating wheel and returned in form of slower deceleration when the power is reduced.

      I find these hubs quite appealing. I like the idea of an o-ring serving as a pawl spring. But for me longevity and low maintenance is what is important in a hub, so I’m not a prospective buyer of them..

    • Saeba R.

      Yep and unfortunately not the first time its been pointed out on this site. It is common sense really – how much effort to spin a resting wheel with your hands? Not much. And in reality bikes accelerate very very slow…

      • bigstu_

        You can tell the difference easily when you spend a long time training on rolling hills. Your legs are a lot more tired after 7 hours on heavy rims than light rims.

        • hornk

          Helloooooo placebo.

  • bigstu_

    I really like the images in this review, Matt, great stuff. I’d go so far as to say I think they’re the most aesthetically pleasing and complimentary pictures of hubs and wheels I have ever seen. Love the use of colour. Sometimes you only notice a difference if things don’t go well and hub axle flex can ruin your day bigtime. So it’s good that these seem massively oversized despite being low weight. I had a pair of Easton wheels once with alloy axles. Rear axle flex under heavy rider weight and effort caused the freehub to bind intermittently such that the cassette kept turning when you stopped pedaling, dragging a heap of chain on to the top of the chain stay and damage. Zero problems when the wheel was tested on the bench. Went back to Shimano and Mavic hubs and never had an issue. Since you are only a feathery light 75kg and the typical purchaser will be the well heeled, middle aged, ex-golfing exec on the wrong side of 100kg, I think it’s essential that all your further road testing should be conducted with at least an extra 30kg in your backpack doing Mills Road East repeats!

    • Thanks, Stu, for everything except the suggestion that I start carrying an extra 30kg. That’s a good definition for torture testing!

      • Pretty much the life they are looking forward to as my daily wheels

      • velocite

        I second Stu’s remarks about your review. Love the wheels stuck in the fence, very creative Matt!

  • Robert Merkel

    No complaints about the review itself, and if people want to buy a product like this good luck to them…

    But this sounds like the kind of overpriced and finicky product that the UCI weight limit protects us against.

    • winkybiker

      I thought the same thing. Seems like that to choose these is to choose an expensive engineering compromise for the sake of a few grams that simply don’t matter.

    • While these hubs didn’t have much appeal for me—I’m far too pragmatic—I’m a little in awe at what Extralite have managed with their engineering. And while it’s prudent to give these hubs a little extra care (the expense alone is enough to justify it in my book), I don’t believe we need to be protected from them by the UCI.

      Fairwheel Bikes have yet to update their excellent hub review (http://blog.fairwheelbikes.com/reviews-and-testing/hub-review/) but their previous installment rated Extralite’s earlier hubs as “surprisingly durable”. Still not in the same category as heavier hubs like Chris King or DT Swiss, but arguably more robust than other lightweight hubs (Tune, Dash).

      For a lot of riders, the Cyberhubs are completely irrelevant to their needs for all of the reasons I’ve touched on above, but they aren’t dangerous. Think of them in the same way as early carbon frames—too light, too expensive, and unnecessary for daily use. And yet…

      • Robert Merkel

        I wasn’t trying to imply that these hubs were dangerous.

        But, as you state, they are very very expensive, unlikely to be as durable, and are probably more maintenance intensive than many cheaper hubs.

        If the UCI weight limit goes, there will be a competitive advantage for some races if you run a $25,000 4kg bike made with components like this. That’s the basis of my claim that the UCI weight limit protects racers from this kind of equipment – by ensuring that you can’t get a competitive advantage from it. And, frankly, I’m glad. Cycling is expensive enough as it is!

        • velocite

          As a general principle I’m against the UCI proscribing what bicycles are like, but that’s an excellent point, the expense of pushing the boundaries. I think you just converted me on the weight limit question. The UCI should get out of the way on seat angle though..

  • Keir

    Servicing every three months! Seriously? I think I’ll keep my bargearse 90kgs on R45s.

    • Any bike ridden more than 200kms a week should be serviced every 3 months Keir.. If it’s 200kms every 3 months then…. ?

    • velocite

      I only discovered after I received my SRAM Red crankset that it’s supposed to be greased every 100 hours, which is around every two months for me. But now I’m used to it, and quite enjoy delivering a bit of regular tlc to my bike.

      • It really only takes a few min with the cassette on if you like.. Also the 3 month thing is a guild that’s a bit idealistic. I put over 20000kms on the older design that had one less bearing. I actually wore out a set of enve 45 tub rims and relaced them to some 25 tubs and sold them on to a friend. I put new bearings in the hubs only cause I had a set of ceramics that I never put into the hubs and they are still clocking along with the same pawls, all original orings and all.. Funny thing is how many people here have owned Zipps or still ride the older ones? They are way more fragile and a PIA to deal with than these things.. The rear hub weighs 129g and has a tension limit of 130kgf on the drive side.. That’s not an ‘engineering compromise’ as stated above its and engineering marvel ?

        • GT

          I also have a set of the Extralite hubs on some Enve 65 rims, sub 1kg sans skewers & cassette. Not treated special, and less attention required than my older Zipps. Must say they are the best wheel I have ridden for roll on & rolling acceleration over 40kph. Hubs from an engineering point of view simple elegant & functional.

  • singlespeedscott

    As light as they are all I can see is another set of crappy exposed cam QR and a gouge prone, alloy freehub. Shimano uses steel in their freehub bodies for a reason. The Campagnolo freehub body is a much better design for light weight alloy.

    Both Campagnolo and Shimano have it right when it comes to a proper QR levers too.

    • No alloy Shimano free hub is any good. The Campag ones on these hubs don’t gouge up much at all. The HART coating process they use is very good. Funny thing is I mostly sell extralite wheelsets to Campag guys and the Shimano guys always get white industry T11s

  • BenOnBikes

    Meanwhile, my 270 g Taiwanese Novatec hubset is working brilliantly for 120USD.

    • Alex

      My Novatec hubs have never worked brilliantly. A front one had the hub flange fail at 30mph and the rim went so untrue it rubbed carbon out of the fork. On both another front one and a rear one I had to replace bearings within 600 miles.

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