OPTIMIZE

YOUR

POSITION

FIND THAT

"SWEET SPOT"

THAT CAN OVERCOME

WIND RESISTANCE

WIND TUNNEL TESTING FOR BICYCLES

SPECIALIZED FACILITY

LOCATION: Fort Collins, Colorado (1 hour north of Denver International Airport)

SIZE: 180' long, closed circuit, recirculating tunnel with 12' wide x 10' tall test section. Provides consistency and uniformity in the flow with plenty of room for riders in test section. Quiet test section eases communication. Elevated platform positions bike and rider in unobstructed wind flow.

WIND SPEED RANGE:0-50 mph. Most tests conducted at 25-30 mph in the middle and most accurate range of fan speed.

ACCURACY: Fan speed is controlled to 0.01% accuracy. Repeatability of tests has been verified to within 1%.

TEST APPARATUS: Custom designed using a 1-component system specialized for drag, eliminating errors associated with post-processing at other facilities. Drag resolution = 0.004 lbs under load (approximately 2g). Yaw measurements of ± 30˚ Video projection system with floor display in front of rider allowing real-time feedback

RESULTS REPORTED: Drag reported in CdA, drag force (grams or Newtons) and power (watts) All results provided on DVD after the testing including:

  • Comprehensive summary data in Xcel spreadsheet for ease of use
  • Photos and video clips from each test run showing position tested, viewed from the front, side, and top
  • Raw data for all tests
© 2005 Ambient Air Technologies, LLC. All rights reserved.
Last updated 9/23/2008

Between 70-90% of a bicyclist's power is used to overcome resistance to the wind.

The wind tunnel owned and operated by Ambient Air Technologies (AAT) represents the optimal in controlled testing, simulating wind speeds a rider would encounter in the real world. The wind tunnel is a scientifically controlled tool allowing the athlete, his or her coach and team to make adjustments to the rider's position and equipment and watch how these affect the rider's drag under controlled wind conditions.

The validity of the tests is highly dependent upon the accuracy and repeatability of the tests. Ambient Air Technologies has validated repeatability to within 1%, referred to by one happy coach and sports physiologist as "amazing repeatability."

The AAT wind tunnel is now available at greatly reduced cost. Previous exclusive arrangements have been discontinued making the wind tunnel available to teams, manufacturers, coaches, and individual riders directly from AAT. This is the same wind tunnel facility that has tested many elite riders including many of the riders for the 2008 Garmin/Chipotle Team Slipstream. We congratulate Team Slipstream on an outstanding initial racing season, especially at the Tour de France.

RATES YOU CAN AFFORD

HOURLY RATE: $500/hour (1 hour minimum)

DISCOUNTS: Coaches, teams, and manufacturers -- call for discounts.

SCHEDULES YOU CAN COUNT ON

You are our client. Scheduled tests will not be changed unless requested by the rider or for circumstances beyond our control. Cancellation fees may apply.