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4
votes
1answer
328 views

DIY computational fluid dynamics for aerodynamics?

Has anyone experimented with using consumer 3D software to do CFD-like aerodynamics simulations? Specifically, I was thinking: Setup the bike on a trainer (with rider) Take a series photos, and ...
3
votes
2answers
231 views

How fast does new technology “trickle down” to lower models?

Is there a "rule of thumb" for how fast new technology "trickles down" from higher-end to lower-end bike models? Can you for example say that a mid-end bicycle frame or suspension fork is as good as ...
8
votes
2answers
580 views

What are the main improvements in suspension technology in the last 10 years?

How much has bicycle suspension technology evolved in the last 10 years? I am thinking about both rear and front suspension. What have been the major breakthroughs that all bicycle manufacturers are ...
5
votes
3answers
1k views

What does a cyclocomputer actually measure for calculating the speed of the bike?

What does a cyclocomputer actually measure for calculating the speed of the bike? Is it the time for one revolution $T$ or is it the number of revolutions $n$ per given time $t_0$? If the radius of ...
39
votes
23answers
25k views

Why aren't Tour de France riders going any faster?

I was having a look at the average speeds of the winner of the Tour de France over the years on this page. To help things along I put the data into LibreOffice and produced a plot: I put on the ...
8
votes
4answers
4k views

Tapered Head Tube

I am wanting to understand how a tapered head tube works. Does it require a tapered steerer, or is it the case that the steerer is a consistent diameter top and bottom and just the bearings differ in ...
8
votes
4answers
6k views

Are road-bike suspension forks still manufactured, if so, where?

For a few years, road bike suspension forks were used at Paris-Roubaix, but now they seem to have disappeared. Are they still being manufactured? If not, why (aside from UCI regulation) did they not ...
4
votes
3answers
497 views

Are there any locking options that lock the drive train of a bicycle?

I've been looking into the different kind of locks available, and came upon this short documentary about bike thefts in London. Seems that just about any lock on the market can be easily beaten by a ...
22
votes
7answers
4k views

What headset/radio products exist for bike-to-bike communication?

I commute to work by bike, sometimes I share the journey with a co-worker. The problem is because of the wind and distance between the bikes, it's very hard to hear what the other person says. It ...
7
votes
9answers
805 views

Bicycle innovations in the pipeline?

The (road) bike I bought 25 years ago is very similar to my current bike. (The derailleur on my new bike adjusts exactly the same way). The materials of my current bike are vastly different than the ...
23
votes
6answers
543 views

What is a good camera arrangement for city riding?

I would like to have continuous camera coverage while commuting on city streets, in order to have evidence in any collision. I have been experimenting with an ATC3K mounted on the pannier rack, ...