Aerodynamics

  1. Testing to find the fastest bicycle wheels

    Update, more wheels added 02 October 2019

    Update, more wheels added 06 September 2019

    Update, more wheels added 06 July 2019

    Precursor - The critics and those with a vested interest

    I have added this section to the start of this blog post. The method this test uses is called transient state and it is used when aerodynamics are constantly changing. This is difficult to explain in detail in one blog post so I have linked to a youtube video.

    In short, the wheel companies are exaggerating their power savings and testing using methods THAT ARE INAPPROPRIATE FOR ROAD USE. If they tell you otherwise, they are categorically lieing and I would be more than happy to prove that in a court of law.

    The important part of the video is embedded below and this shows the difference between airflow that exists

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  2. Hambini vs Flo Cycling...

    I do not usually write this type of post but I wanted to clear a few things up. I am an engineer by training and one of my weaknesses is I am unable to articulate myself as well as I would like. This is mainly because English is not my native language. There have been a lot of negative words exchanged between myself and FLO cycling about their wheels and I wanted to clear a few things up.

    My engineering is Genuine

    A key fact that seems to have been glossed over is when a set of FLO wheels was originally tested, the results were kept private and I went to lengths to contact FLO cycling to inform them that their wheels had performed badly. I waited a number of weeks and received no reply. I took the view that as a comparative nobody in the cycling industry they did not really care. So I proceeded to publish the results on my blog.

    At this point FLO got interested – they did not want the negative publicity a

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  3. Aero Bike wheel test... The fallout

    Those of you who are avid viewers of a number of Internet forums will have noted that some results from my bike wheel wind tunnel testing have been contested and criticized. The ultimate result was I ended up getting banned from weightweenies for a week for calling Tom Anhalt of bike blather a spec of shite on the anus of humanity and a letter went from Flo Cycling to my HR department to ask for me to get the sack.

    One of the advantages to not being in the bike industry full time is I don't really give two hoots about brand perception and I'm more than happy to tell someone where to poke it when they are talking from their rear end.

    The Background

    This story starts off with an innocent enough beginning. One of my colleagues was doing an IronMan race and needed the fastest wheels. So some testing was performed. The difference was as a group of aerospace engineers, we probably have a better understanding of airflow than bike companies whose primary aim is to sell

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Sachin Hambini Engineering, S. Varah, Unit 11386, 13 Freeland Park, Wareham Road, Poole, Dorset, UK BH16 6FH