Welcome to the Hambini Engineering website. This website started off as my place on the internet for me to detail technical aspects of bikes, cars and my love of engineering. This is largely in conjunction with my YouTube channel where content mainly involves bikes and cars.

Recent posts from the Hambini Blog

  • Bottom Bracket Fitting Tools

    At a point (which I have yet to decide), new bottom brackets will not come with fitting adaptors, these will be available separately. The reason for this change is because a large number of people are buying Hambini BB's for second bikes or getting them fitted at bike shops, they do not need a second set of fitting adaptors. The product pages will be updated with a clear notice when this change takes place.

    Thanks

    Hambini

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  • Bicycle Wheel Aerodynamics, Which one is fastest!

    In terms of drag caused by a bicycle rider, the biggest loss is caused by the rider themselves followed by the wheels and frame.

    The drag caused by wheels is significant because of two fundamental reasons. The first is they hit the air first as they are the most forward part of the bike and second because they are rotating. The effective air speed at the top of a wheel/tyre is double the indicated speed of the bike.

    In the bike industry, wheel aerodynamic testing has generally been conducted by two groups of people - Wheel manufacturers and journalists. Wheel manufacturers will usually adjust tests to make their particular wheels look more favourable than their competitors in testing. This is usually achieved by a combination of adjusting speeds and angles. The reality is this type of test is not impartial.

    Journalists on the other hand tend to visit their local university and ask some clever boffin to conduct their testing for them and give them the

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