Notio – Aero meter #CDA

This did not end up lasting too long. Some interesting insights from the device, but accuracy especially with something like CDA is very nuanced.

Key take away, continue to use Best Bike Split (software derived CDA versus this physical device).

This was one of my test from Huntersville Business Park:

Test Conditions

  • Weather: Hot
  • Bike Setup: Fully loaded with 2 water bottles, no tools
  • Note: Rear radar moved during testing
  • Coefficient of Rolling Resistance (Crr): 0.004
  • Rider Weight: 190.08 lbs
  • Tire Circumference: 2136 mm
  • Calibration Factor: 1.39

Key Findings

  • Visor position: Down position saved ~0.007 CDA (Notio) / ~0.002 CDA (BBS)
  • Calf sleeves: Minimal impact – ~0.001 CDA (Notio) / ~0.009 CDA (BBS)
  • Direction matters: Counter-clockwise on this HBP loop showed higher drag in both systems
  • System difference: Best Bike Split consistently reads 0.044-0.092 higher than Notio
  • Best configuration: No sleeves + visor down = 0.222 CDA (Notio) / 0.2843 CDA (BBS)
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    “The least you can do …”

    During a recent Diwali event at SAP, a speaker shared an intriguing story about Lucila Takjerad, an Algerian who was fortunate enough to be the recipient of someone’s help, and later graduated from Harvard. Below is the speech she gave at her commencement.

    Lucila Takjerad
    “The Least You Can Do”
    Lucila Takjerad
    English Graduate Commencement Speech
    May 20th, 2019
    The Least You Can Do

    As Harvard graduates, you will be asked to go into the world and do the most you
    can do. I am here to ask you to do the least.

    I was born in Algeria. Every Friday, my sister and I had our weekly shower at the
    public baths. We didn’t have running water at home. On winter nights, we cuddled against the cold because our heat was cut off. And, on some days, we hid our hunger in order not to worry our parents.

    When I was seven years old, my country plunged into a bloody civil war. Every night, I prayed to God that tomorrow, there would not be an empty seat at our dinner table. read more

    Chat … GPT

    From all our interactions, what is one thing you can tell about myself, that I may not already know about myself?

    ChatGPT said:

    One thing I notice about you is your passion for creating tools and apps that make life more efficient and enjoyable, whether for work or personal interests. You’re deeply engaged in improving processes, building apps that solve practical problems for people—from tracking sewer installations to celebrating colleagues’ milestones. You also balance this focus on productivity with personal connections, like attending friends’ weddings or sharing thoughtful moments with family. This mix of efficiency and meaningful relationships seems to drive much of what you do. It shows a unique blend of technical skill and empathy. Does this resonate with you? read more