Recent content by Alex Simmons/RST

Running involves significant skeletal impacts as well as both concentric and eccentric muscle contractions (in contrast to cycling which has little to no impact forces and only involves concentric contractions). These factors combine to create additional fatigue and differences in efficiency...

Hmmm, I answered your specific question, i.e. no, it's not always possible to control the situation to always avoid door risk (or other similar risks). Yes it's most certainly possible to reduce the risk but not to eliminate it. I'm glad you've managed to stay safe for as long as you have...

My point was that on the basis of my experience, no it is not always controllable. Yes one can do things to reduce the risks you expose yourself to but it's not possible to control things you have no control over. I guess you can choose to not ride outside.

You'd be surprised at the multitude of ways Sydneysiders who own vehicles are capable of putting a cyclist in peril no matter what the cyclist does. Part of why I left. Obnoxious?

The luxury of time for such a decision choice in such cases is rare. An evasive response will be automatic/instinctive. Experienced cyclists don't ride in the door zone to begin with.

Noel is a "flat earther" of cycling. A true believer. No amount of evidence, logic and sense are going to convince him. He worships upon the altar of Anquetil's mythical pedalling and such deep faith can't be reasoned with. Perhaps a visit from the ghost of Jacques crying out in a ghostly...

This is a pretty well known phenomenon. In this blog item I write about some impromptu aero experiments and talked about some other aerodynamics testing results that demonstrate the same thing: https://wattmatters.blog/home/2015/08/when-your-ride-buddy-becomes-real-drag.html

Martin set a new Danish record with a fine last night in Odense. 53.975km

Re: Re: For same crank length, you can't. Unless you intend to break the laws of physics.

Re: Re: No Noel, data is exactly what is needed. Common sense tells me that.

Does anyone have any actual evidence that radios are causing more crashes?

Re: Re: An exponential function has its variable in the exponent, but a power function has its variable in the base. It is a significant difference. e.g., where "x" is the variable and "a" is a constant: exponential function: f(x) = aˣ power function: f(x) = xᵃ The physics relationship in...

Re: Re: Aero benefits are not linearly additive in this way.

Re: Re: I ran an analysis of the impact of drafting 12m behind another cyclist. Depending on conditions it provided the following rider with a 20-30W reduction is power required at 40km/h. We can expect that a moto, being a larger vehicle would provide at least this level of benefit at a...

Re: The relationship between speed and power output is a cubic equation (a mathematical power function), and is *not* an exponential equation. Exponential implies something vastly different to a power law.