meta user
network profile
| bio | website | neverfear.org |
|---|---|---|
| location | Adelaide, Australia | |
| age | ||
| visits | member for | 11 months |
| seen | May 17 at 11:32 | |
| stats | profile views | 4 |
My contact info can be found on http://neverfear.org/profile/ben or alternatively I could be contacted via http://twitter.com/_dbr
|
Jan 31 |
comment |
Why aren't Tour de France riders going any faster? Like the weight limit, there are many rules which effectively ban other advancements like more aerodynamic water bottles. The UCI have similar rules for track racing, which have made the traditional hour record practically impossible to beat (covered nicely in the documentary about Chris Boardman's final hour-record attempt) |
|
Jan 15 |
comment |
DIY computational fluid dynamics for aerodynamics? This nicely summarises why I suspected this wasn't really going to work. As you say, just analysing frontal-area/positioning based on photos definitely sounds more productive... Thanks! |
|
Dec 30 |
comment |
DIY computational fluid dynamics for aerodynamics? @whatsisname Did you find a proper keyboard? Really curious to see your answer! |
|
Nov 30 |
comment |
DIY computational fluid dynamics for aerodynamics? @R.Chung (heh, so is it safe to assume you are "that" Chung, or just a huge fan? :P). That link is interesting, "CFD simulations predicted the drag areas with an accuracy of about 11% for RANS and about 7% for LES". If that's the accuracy with a laser-scanned model and proper CFD sim, a photo-based model and a fluid-simulator intended to make pretty images probably isn't going to be terribly accurace.. |
|
Nov 30 |
comment |
Safety vests: Yellow vs. Orange? Here's the actual graph of cone-cell response. The eye is definitely most sensitive to green parts of the spectrum, but squishy-human-related-stuff is never that straight forward, nor is light. E.g most lighting you will encounter (i.e not lasers) will be spread over the entire visible spectrum (like this), and materials/colours vary widely in how they reflect this (meaning fabric that is "bright" under sunlight might be almost invisible under streetlight) |
|
Nov 30 |
comment |
DIY computational fluid dynamics for aerodynamics? @freiheit My main question is "Could there be any worthwhile insights gained from this", which I think could have a good objective answer from someone who has attempted this before. Edited the question slightly - does it seem any better? I'm not totally sure how to word my question in a way that seems less chatty/discussion'y |
|
Nov 29 |
comment |
DIY computational fluid dynamics for aerodynamics? Wait, there's no badge for nerdiest-question-on-Bicycles.SE? |
|
Oct 16 |
comment |
Velodrome atmospheric conditions @R.Chung Hm, good point.. but shouldn't matter much in this case, right? I guess the rolling resistance would be a constant value added to the required-power, and the default barometric-pressure/humidity values are fine and arbitrary (without knowing the "Olympic mandated" values) |
|
Sep 17 |
comment |
What is a reasonable speed for long distances on a bike? @mattnz good point, it was on different bikes, but they are all comparable (two road bikes, and a hybrid which has road tyres) - other factors caused far more noticeable variance |
|
Sep 15 |
comment |
Is it possible to estimate road grade while riding? I wonder how accurate it'd be if you attached the iPhone with a bike-mount, and zero'd the inclinometer application on a known-flat surface (with a spirit level, say) |
|
Aug 21 |
comment |
Protocol for slipstreaming another cyclist? @TorbenGundtofte-Bruun good.is/post/… |
|
Jul 13 |
comment |
List of UK hill climbs Here is an explanation of how the climbs are categorised (essentially using the UCI calculation, but ignoring the subjective difficulty). This is what the segment explorer looks like - my only complaint is quite a few of the stepper segments are unsuitable to road-bikes, but this is hard to determine short of using street-view to check |
