HED Jet 4 Carbon Road Wheelset Clincher

HED Jet 4+ Carbon Road Wheelset Clincher

With every wheelset, there is some sort of compromise. If it's a super deep dish, it will be expensive and it may not handle well in the wind. If it's a box rim, well, it'll be inexpensive, but most likely heavy. The HED Jet 4 Clincher Wheelset is designed to minimize compromises to give you a lightweight rim, with an aerodynamic advantage without having to refinance your home. The Jet 4 rims are 46mm deep, which is about double the depth of the HED Belgium series or most traditional hybrid v section wheels, but half the depth of HED's flagship Jet 9. The weight is in the ballpark of traditional 32 spoke, box section clinchers, which are the 'standard' wheels that many of us are on, but the aerodynamic properties of the Jet 4 are far superior.HED has found that the Jet 4 slices 50 90 grams of aerodynamic drag off of a conventional wheelset. That's a minimum of a 25 40 second savings in a 40k time trial, or five to eight watts every second that you ride. Those savings are aerodynamic drag alone. There is also a reduction in the rolling resistance because of the Jet 4's 25mm wide C2 rims.C2 stands for two Cs: Lower coefficient of rolling resistance Crr and better aerodynamics Cda. Not without reason, the rims on the Jet 4 Wheelset are 25mm wide compared to the 19mm standard. This is to match widths with the tires that most use on their bikes 23mm. A 25mm rim paired with a 23mm tire changes the tire's footprint, resulting in more grip through straights and turns. This is because the tire has a straighter sidewall and deforms less at pressure. This design also produces a lower rolling resistance. In fact, when HED sent the wheels to Continental Tires for testing, the engineers shrugged their shoulders, figured there was no difference, but put them in the jig and ran the tests anyways. It turned out the 25mm width has 18% less rolling resistance. And because of the smoother tire shape, the transition air makes from the edge of the tread to the end of ...

Best Price:  $999.95 on sale  from  Competitive Cyclist
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