5,449 reputation
1133
bio website touset.org
location San Francisco, CA
age 30
visits member for 2 years, 11 months
seen Apr 5 at 0:28

Cyclist. Rubyist.


Feb
1
comment What's best engine to motorize a road bike
Joke answer: Legs.
Jan
25
answered Is there such thing as a freewheel that doesn't click?
Jan
25
comment How to protect myself when falling off the bicycle
Even given the update, I believe that this advice is dangerous and misses the point. When you are involved in a crash, the number one priority is to protect your head. The number two priority is to protect your limbs. Period. Considering the physics of a fall assuming you are a spherical body is irrelevant to the forces experienced in an actual crash, and any reduction in force you experience from extending your deceleration is immaterial unless you are crashing into a solid obstacle like a wall. Your body does not experience significantly more trauma in a 30ft slide versus a 35ft slide.
Jan
11
comment How to protect myself when falling off the bicycle
Stated differently, the physics provided considers your body as a singular mass, and recommends an approach that may marginally decrease overall force experienced by your body while significantly increasing the risk substantially higher forces on localized parts of your body (e.g., limbs). Unless you are a perfectly spherical mass (hey, I'm not judging here), this advice gets the physics (mostly) right but completely ignores context.
Jan
11
comment How to protect myself when falling off the bicycle
I think the actual advice in this answer is dangerous. First, I remain unconvinced that anything you can do during a wreck will significantly increase or decrease d. But worse, what actually causes serious (non-head) injury in a bike wreck is usually having limbs broken while tumbling. Extending your arms and legs is an extremely bad idea, and will more likely than not contribute to broken limbs.
Jan
10
answered How to protect myself when falling off the bicycle
Dec
18
comment What would cause variable air resistance on a day with no wind?
Great idea. I've added one.
Dec
18
revised What would cause variable air resistance on a day with no wind?
Added TLDR
Dec
17
comment What would cause variable air resistance on a day with no wind?
It's a nitpick on your comment, but it's closer to 7.5% power difference at constant speed, 7% speed difference at constant power. Also don't forget to accept, if you think this is the best answer. :)
Dec
17
answered What would cause variable air resistance on a day with no wind?
Dec
17
comment Bicycle for 2 x 30mins commute
Messenger bags solved the back-sweat issue for me.
Dec
10
accepted How to handle an attempted bike theft
Dec
9
asked How to handle an attempted bike theft
Dec
7
awarded  Pundit
Dec
6
comment Which brake is most expendable?
Giving a percentage for stopping power in this way is misleading. In practice, the brakes provide stopping power in proportion to how hard you pull each the lever, with the rear brake tailing off to zero stopping power as the front brake is pulled harder. The rear brake may be capable of providing 60% of the stopping power (I'm not sure about the number) of the front, but due to weight transfer, the stopping power isn't simply additive.
Dec
6
comment Which brake is most expendable?
Also, in addition to simple brake failure, having only a front brake is particularly dangerous if you're ever in a scenario when you might lock up the front wheel. Ice, wet roads, loose gravel... a rear brake is a cheap insurance policy.
Dec
6
comment Which brake is most expendable?
Beat me to it by a few seconds. The front brake is crucial, but removing any brake for weight reasons is generally a horrible idea. Fixie riders can get away with a single brake because they can use the drivetrain to skid the rear wheel, but road bikes don't have that luxury.
Nov
30
comment What's the efficiency of hub gears compared to derailleurs?
Rolling up your pant leg also allows you to arrive at work with clean clothes. :)
Nov
19
comment I want an cool urban/track bike with 3speeds. Could you recommend me one?
Given that the defining characteristic of a track bike is its fixed-gear nature, exactly what traits are you looking for?
Nov
17
reviewed Approve suggested edit on Time trial improvement from new bike