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HED H3
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HED Aero Bar |
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"Proven Speed"
HED Wheels
 Fast wheels are no secret. One needs a wheel on the front with a deep section aero rim. And on the back one needs a disk or, if one does not want a disk for some reason, another deep section aero rim. First aero, then low weight. I mean real aero, not "marketing aero".
I rode the first H3 when it came out of DuPont's research lab. I have been riding every since. I have tried to break them (part of the test program). They never broke. A pedal in the spokes of a wire spoke wheel usually means a destroyed wheel and maybe a crash. A pedal in an H3 and its a nick in the gel coat. H3's are wheels that one can ride fast every day.
HED only designs and builds wheels with exceptional aerodynamic efficiency using the finest materials and wheels which handle correctly out in the real world. This guarantees optimum stability and consistently safe bike control. These, along with other important factors such as strength and durability, are the criteria used to shape the design of every HED wheel.
At 25mph, 80% of an average rider's power output is used just to overcome the effects of wind drag when riding on the flat. Any reduction in this percentage results in either an increase in speed or a decrease in effort.
The speed you can achieve on your bike is determined by two factors. The first is how much power you are able to produce, measured in watts. The second is wind resistance, commonly referred to as "drag" and is usually measured in pounds at 30 mph in wind tunnel testing. The faster you go, the more wind drag there is to overcome. This is why a rider with a technical advantage is often able to go faster than one with a greater power output.
It's a relatively simple matter to design an aero wheel capable of producing a low drag factor against a direct headwind. However, we understand that a true zero degree headwind is almost unknown on the road. All it takes is a 5mm lateral shift by the rider and the headwind becomes a side wind in relation to the front wheel. Designing a wheel that performs well in all wind conditions is therefore paramount. This is why all of our wheels are designed and tested using wind angles from 0 to 20 degrees. By carefully regulating the depth and shape of our wheels, we can achieve optimum wheel performance no matter what the wind conditions happen to be. When our numbers go down in the wind tunnel, you go faster out on the road.
Carbon fiber's strength to weight ratio and large variety of fabric strengths and weaves allow us to make wheels that are not only light and rigid, but also strong and durable.
Wheel Chooser |
Use this chart to compare our road wheels to a standard 32 spoke race wheel. All wheels were tested at 30mph and at 0°, 5°, 10°, 15° and 30° angles.
Comprehensive |
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32 Hole |
Disc |
Alps |
H3 |
Jet 40 |
Jet 60 |
Jet 90 |
Stinger 50 |
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0° |
0.534 |
0.404 |
0.406 |
0.409 |
0.408 |
0.422 |
0.403 |
0.410 |
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5° |
0.604 |
0.377 |
0.392 |
0.397 |
0.418 |
0.417 |
0.357 |
0.397 |
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10° |
0.628 |
0.284 |
0.304 |
0.321 |
0.427 |
0.427 |
0.291 |
0.308 |
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15° |
0.641 |
0.180 |
0.400 |
0.313 |
0.408 |
0.406 |
0.268 |
0.405 |
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30° |
0.838 |
0.233 |
0.415 |
0.278 |
0.559 |
0.485 |
0.393 |
N/A |
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Average |
0.649 |
0.295 |
0.383 |
0.343 |
0.458 |
0.433 |
0.393 |
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% of 32 Hole |
100% |
45.5% |
59.0% |
52.9% |
70.5% |
66.7% |
55.8% |
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