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.
Hambini products are highly rated, the average rating for technical proficiency and quality is 4.95 out of 5. All products are sold directly, there are no distributors or retail outlets. Genuine Hambini products can only be purchased from this website.
Since starting the website and the combined YouTube channel, I have become one of the largest stockists of bicycle bearings in the UK, I supply many of the UK's wheelbuilders preodminantly with NTN bearings. The current offering is NTN, SKF, NSK and FAG. All of my bearings are genuine items and not B Grade stock.
Recent posts from the Hambini Blog
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 t
If you are reading this you will have probably already come across the numerous posts by various individuals in Internet forums across the web.
The issue of creaking bottom brackets has been blamed on the introduction of pressfit and directfit bottom bracket standards, where bearings either push directly into the bike frame or push into cups which are then pushed into the bike frame.
General guidance varies from taking everything out and regreasing it to installing with extreme measures such as epoxy resin.
Pressfit is not the problem and threaded is certainly not the answer...
The reality is pressfit has nothing to do with creaking. There are many areas of a bike where bearings have a pressfit and there are no problems. For example, wheels, freehubs, pulley wheels and some headsets are pressfit yet they don't generally creak.
The basic reason for the creaking is one of two reasons, either a poor fit or misalignment. Often, the two occur at