The OneUp patent pending oval bar profile minimizes arm pump and vibrations, giving you nothing but good vibes. But don't just take our word for it. Check out what other have to say below.
Also scroll down for Vital-Mtb's flex testing video. Worldwide Cyclery's back to back ride testing video of OneUp vs Renthal vs Race Face vs Truvativ handlebars and to find out how we engineered for good vibes.
How we engineered OneUp Carbon Handlebars to feel better
OneUp Carbon Handlebars have an oval cross section which is shorter vertically and wider horizontally than traditional round handlebars. This lets us independently tune the flex of the bar to be more compliant and comfortable vertically and stiffer and more responsive front to back which gives you a better feeling bar.
When we benchmarked the OneUp bar against the most popular carbon bars and foam filled aluminum bars we saw on average, a 21% increase in vertical compliance (comfort) coupled with a 28% increase in steering stiffness (responsiveness). These are big differences. We also saw improved vibration damping characteristics and a natural frequency of 16.53Hz, which is past the critical 16Hz threshold. But don't just take our word for the compliance, check out Vital-mtb and WorldWide Cyclery's video testing.
You can make small changes to a carbon bar's stiffness by adjusting the layup, but you can't fight physics. If you really want to tune the flex you need to completely change the shape of the bar.
The compliance of a handlebar in its simplest form is the deflection of a cantilevered beam. δB = F L3 / (3 E I) .OneUp bars are 800mm wide and have a DH/Ebike strength rating. So for our width and strength F, L and E are all constants. To increase the compliance you have to decrease the area moment of inertia (Ix).
For a traditional round handlebar the area moment of inertia for a round cross section is: Ix = π r4 / 4
So to reduce the area moment of inertia you need to reduce the diameter of the bar. But this means increased weight and reduced stiffness of the bar in every direction so you lose steering response.
By moving to an oval profile bar we can independently tune the vertical and horizontal stiffness to create a bar which is compliant but also responsive. The area moment of inertia for an oval cross section is: Ix = π ab3 / 4. As the the minor radius of the oval "b" is cubed, even small changes in ovality greatly increase the compliance of a bar.
The Patent pending OneUp oval bar profile provides a real functional benefit that you can feel on the trail.
If you're not an armchair engineer but want to learn more check out: