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BMC GF01 Disc vs. Colnago CX Zero Disc

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  • July 4, 2014 at 11:58 am #21828
    truffy

    Hello

    I’ve lurked on road.cc for some time, but only now have registered. I hope that my first post, a call for help no less, isn’t too jarring! 🙂

    I’ve been riding the same bike for over 16 years, and since this year I turned the big ‘five zero’ I thought I’d treat myself to a new bike. It’s either that or completely replace the chain set in the old one since some of the teeth are barely recognisable!

    Thinking of the type of riding that I do (mostly cycle tracks but some off-road gravel) I was thinking of a carbon frame endurance bike and narrowed it down to the BMC GrandFondo GF01 Disc (Ultegra Di2) or the Colnago CX Zero Disc (either Ultegra or Ultegra Di2). The GF02 as an alu frame is still a rank outsider.

    Both seem nice bikes, with decent reviews. But has anyone here ridden them both and can comment? Of course, the best thing would be for me to test ride them both, and there’s a BMC dealer just up the road. But there’s no Colnago dealer within reasonable striking distance (although I can make unreasonable striking distance if it comes down to it). Overall, the Colnago looks the better deal (as an Ultegra build it’s slightly more expensive than the GF02 but full carbon not alu, as an Ultegra Di2 build it’s slightly cheaper than the GF01), and it’s easier on the eye.

    I weigh in at slightly the wrong side of 100kg, although aim to bring that down to slightly the wrong side of 90kg! Would that be too much for these bikes? (the kink in the seat stays of the GF02 has me a little concerned)

    Thanks for any help you might be able to offer!

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  • July 6, 2014 at 12:44 pm #802017
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    truffy

    Hi Kildafornia, thank you for
    Hi Kildafornia, thank you for your reply. I read somewhere (a US forum IIRC) that BMC doesn’t set a rider weight limit (again IIRC that was posted by BMCUSA), but I sent a request for information from Colnago. I’ll post back if I get a response.

    I’m not chasing super-light, with my weight it’s a futile exercise, but strength and comfort. As to wheels, even my heft should be no problem for any of those that you mention, except the Mavic. But I was thinking of DT Swiss, at least the X-1900 Spline is what comes with the GF01 and is a BTO option for the Colnago. They’re aluminium.

    July 5, 2014 at 11:26 am #802015
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    kildafornia

    Hi Truffy, my first post too
    Hi Truffy, my first post too so I hope you don’t mind me sounding in! Some manufacturers have a rider weight limit (Bianchi 95kg), but I can’t find one for BMC or Colnago. Colnago have an interesting policy if not chasing superlight frames; they state a frame should weigh minimum 1000g for safety. The GF01 is 995g, I’d say that complies.

    New materials and processes like Bianchi and easton’s nanotube claims to add more elasticity and strength to a standard carbon fibre lay up.

    Having said that, it seems that the wheels are where you need to watch the weight limit you want more spokes on the drive side of the rear wheel, a high spoke count, and non-radial front spokes for that disc. Here are a few weight limits for some carbon wheels (aluminium might be different) Zipp 113kg. Campagnolo 110kg. Reynolds 113kg. Mavic 100kg. Fulcrum 109kg.

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