Posts Tagged: drag

Not Marginal – Vast Gains

I decided to try and quantify the speed difference between mountain bike and road bike. TLDR; the road bike is approximately 13% faster (equivalently the mountain bike is 15% slower). If you are commuting, buy a cyclocross bike.

Masses of Wheels

I felt it was important to know how heavy my various sets of wheels actually are: I have a set of low-drag high-mass wheels and a set of high-drag low-mass wheels, and quantifying what all those various ‘high’ and ‘low’ terms are is at least interesting and hopefully useful. Where Hub Skewer Rim Tyre Tube Mass (kg) Drag (N)… Read more »

Flo 30 Rims

Yesterday evening Cerys and I used the new aerodynamic wheels I built in a 10 mile individual time trial for the first time. Now therefore seems a good time to draw some conclusions. In summary, Flo Cycling have done an excellent job of the aerodynamics with the Flo 30: the bike stability is a massive improvement over… Read more »

Speed for Sale

You can’t buy fitness; if anyone offers to sell it to you it’s probably time to call WADA. But as a cyclist you can legally buy performance in other ways: when you are cycling your speed is that at which the propulsion force you generate is equal and opposite to the forces opposing your motion. These forces are many and… Read more »

Hoops

As it’s getting closer to the day my new bike comes into existence, my thoughts turn to the question of what wheels to put onto it.

Aerobars

I recently bought some cheap clamp-on aero extension bars.