• Spider

    8.8kg without pedals? how is this possible? (the last bike I weighed was a 60cm steel bike at 7.5kg with pedals)…how can a 50cm carbon thing weigh so much?

    • winkybiker

      Yes, does seem heavy.

    • Dave Rome

      8.8kg is certainly on the heavier side. In this case, I believe it’s a sign of the limitations of disc brakes on mid-level road bikes. In addition to the heavy wheels, wide-range gearing and disc brakes, you’ll find this model also has heavier aspects such as an alloy steerer tube at the fork and a 105 cassette.

      I’d bet the ‘Advanced Pro 1’ model above is a fair bit lighter, and that’s what you’re paying for.

      • Spider

        and if we think about the general size of a rider who rides a 50cm bike then it’s likely the weight of the rider would be much smaller (and possible the power output, but not power-to-weight) – so the weight presents a much greater percentage of total weight (bike + rider). I wonder what the perception would be for a 50kg woman on a 9kg bike – could be significantly different to a 90kg man on a 7kg bike.

        Great looking bike though!

  • winkybiker

    I don’t get why “disc rub” is even a thing. I am baffled as to why a disc brake system apparently aren’t designed with adequate clearance.

    • Dave

      They are, with the use of through axles being part of that design system to eliminate one of the three causes of dragging brakes – a poor wheel change.

      Like the first, the other two causes of disc rub are also operator error – bending the disc like a taco, or incorrect installation of the brakes.

      The comment about using through axles to deal with the chance of a poor wheel change causing brake rub shouldn’t be contained within a bike review article, it should be contained in a Basic Bike Maintenance 101 article.

      • winkybiker

        Incorrect wheel installation makes sense as a cause. But one that is easily fixed once the rub is noticed. So the through-axles only solve a problem that is also easily solved without them.

        Is bending discs a thing that only (usually?) happens in transit (I can easily imagine it when packing for air travel or even in the boot (trunk) of a car with lots of stuff stacked on top of the wheels/bike. Can you get disc splints/protectors for travel?

        A disc that can be bent by the bike being leaned (leant?) on it seems too flimsy to me. Could discs be thicker for the sake of a few grams?

        I can also think of a number of engineering approaches that would result in more pad clearance without necessarily increasing lever travel.

        The whole issue seems solvable.


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