cwi4958190wrote a review of Race Face Turbine 3/4in Riser Handlebar on November 17, 2014
Familiarity: I've put it through the wringer
To start, here's a disclaimer. I can only comment on these bars for use on a XC machine. At first I was reluctant to try them for that purpose, fearful they would ruin the handling characteristics of my bike for technical single track and extended climbs. I previously had a set of flat bars on my bike and shortened to about 680mm for tight work among the trees. So far I've left the Turbine risers at their starting length, 725mm. I may lop off a centimeter from each side in the near future. But the transition from a medium length bar to a longer has shown me the benefits of having that extra leverage when negotiating a 29er through the rock gardens of the technical single track loop I ride frequently. On the other hand, I’m no longer confident leading with my shoulder through a tight turn festooned with tree trunks and sneaking the bars through. That’s why there are happy mediums. But to the bars.
They feel light and strong out of the box. The central 31.8 diameter section is substantial. And the bars on the bike don't feel whippy at all. They make for a solid cockpit and lend themselves to that positive leverage I mentioned earlier. As for the handling, at first I thought my fears had come true. Although the 3/4 rise appears slight compared to a flat bar, the shape definitely repositions the rider differently and requires some initial getting used to.
The two main differences I noticed after a few rides were, one, a significant decrease in stress on the lower back on extended climbs and, two, a proportionate increase in demand on the upper body to "work" the bike through technical landscapes and support the body on long climbs. For me these were positive changes - it makes for more of a whole body effort on technical terrain and also helps isolate the muscle groups below the waist for climbing, taking away that strain on the muscles around the lumbar.
And handling? After a few weeks I'm back to swinging my 29er around the tightest switchbacks. Good bars. No regrets.