1,279 reputation
411
bio website neverfear.org
location Adelaide, Australia
age
visits member for 1 years, 10 months
seen 9 hours ago

My contact info can be found on http://neverfear.org/profile/ben or alternatively I could be contacted via http://twitter.com/_dbr


Dec
30
comment DIY computational fluid dynamics for aerodynamics?
@whatsisname Did you find a proper keyboard? Really curious to see your answer!
Dec
20
awarded  Student
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
30
revised DIY computational fluid dynamics for aerodynamics?
First attempt at making the wording less subjective/chatty
Nov
29
comment DIY computational fluid dynamics for aerodynamics?
Wait, there's no badge for nerdiest-question-on-Bicycles.SE?
Nov
29
asked DIY computational fluid dynamics for aerodynamics?
Oct
17
revised Route mapping tool - INSERTING a point
Mention how to access drawing tools
Oct
17
suggested suggested edit on Route mapping tool - INSERTING a point
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)
Oct
16
answered Route mapping tool - INSERTING a point
Oct
16
answered Velodrome atmospheric conditions
Oct
9
awarded  Nice Answer
Oct
9
answered Are Z-shaped cranks a good idea?
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
17
revised What is a reasonable speed for long distances on a bike?
Mention speed over time, and multiple bikes
Sep
15
answered What is a reasonable speed for long distances on a bike?
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)
Sep
15
answered Is it possible to estimate road grade while riding?