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  • 0 posts edited
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  • 42 votes cast
Feb
9
comment What speed of wind gust will cause a cyclist to swerve by 1m or more?
@Frisbee my comment was regarding the physics, not so much about the question. Like, certainly bike & rider's mass is a big factor here but not included in the math. Regarding speed, a ball would be good example to show how speed doesn't matter much because no matter how fast, it will still roll side way in Y meter for X Newton of force. I don't think there's enough details to answer this.
Feb
9
comment My bike got stolen a second time (in Amsterdam) - what should I do?
I got the big picture from a friend who lived there. His friend wanted a bike, so they told him to go to central station (iirc) and sure enough, someone approached him (junky). He told him he needs a bike and half an hour later he got one in exchange for something like 15 Euro.
Feb
9
comment What speed of wind gust will cause a cyclist to swerve by 1m or more?
I think you need to know how big is the wind force and the mass of the bike & rider. The bike speed only affects how the bike resists the wind, i.e. whether it's going 50 kph or 100 kph, 1 Newton force will push it the same distance side ways.
Jan
28
comment Is it worth wearing a headlamp when cycling as well as having a bar mounted light?
I think I read somewhere that helmet attachment could be illegal as it breaks some standards (country specific). Might be a safety issue in a crash as the helmet could catch something.
Dec
24
comment Would a moist cloth wrapped around the nose be reasonably effective as compared to an anti-pollution mask?
@Frisbee by harmless I mean in the context of the question, riding bike outdoor, not dying in garage with a car with engine running. If the level is so high, the first effect would be your aerobic system not performing well from O2 deprivation. The link to wiki page you gave also shows a map of CO concentration. Although it doesn't illustrate specific area, it shows what kind of CO level in China compare to India. So, yes, I won't be concerned about CO.
Dec
24
comment Would a moist cloth wrapped around the nose be reasonably effective as compared to an anti-pollution mask?
@Frisbee just anecdotal facts, people are doing physical in heavily polluted outdoor areas, 30 minute is nothing. Even if they get elevated CO level in their blood, the effect would be similar to being in altitude tent, you get less O2. It's not practical to do it safely because you'd need to monitor your blood. If people can race in the Tour of Beijing, surely these gasses in polluted air is not much of a problem, unlike lead poisoning which has long term effect.
Dec
22
comment Would a moist cloth wrapped around the nose be reasonably effective as compared to an anti-pollution mask?
CO binds more easily than O2 in blood. To move you need O2. If you can keep going on your bike that means you're getting all the O2 that you need and the concentration of CO2 is basically harmless. Think of it as alternative to altitude training J
Dec
20
comment Is it more economical to true a cheap wheel or to buy a better wheelset?
Whatever it is, between paying $20 for service and buying $100 new, I'd go with new one.
Dec
20
accepted What to do when a snake is in front of you?
Dec
17
comment What to do when a snake is in front of you?
@Developer63 Very informative, but I think some of the clips (i.e. videos of snakes dying) are irrelevant. I don't think no one intends to kill anything with a bike. Could you elaborate on answer 3), if biker safety comes first, surely you imply the snake's come second?
Dec
16
comment How far should I be able to bike?
To give some perspectives (and because just saw it on the news), the world record is something like 120,000 km a year, or 10,000 km a month. There's also 24-hour ride where people do 800+ km.
Dec
16
comment What to do when a snake is in front of you?
@barbecue it might sound silly, some people are just scared of snake bites, deadly or not. They probably wouldn't know if the snake is venomous or not, and size is what people fear more. Even if I knew it's harmless, I still wouldn't risk being bitten.
Dec
15
awarded  Critic
Dec
15
awarded  Nice Question
Dec
15
comment What to do when a snake is in front of you?
@Developer63 it's on road bike with 23 tyres at about 20 mph, was coming out of a 90 degree ramp.
Dec
15
awarded  Notable Question
Dec
15
comment What to do when a snake is in front of you?
Yep, even I will feel threatened if anything coming towards me in high speed. Your story proves that my fear is reasonable. And venomous or not, being bitten won't be fun and what if it bit and stuck there...
Dec
15
comment What to do when a snake is in front of you?
@DavidRicherby of course I would take attack angle into consideration and speed. I generally try to swerve around obstacle if I can, but it's not always possible at speed.
Dec
15
comment What to do when a snake is in front of you?
@DavidRicherby I would run over a 1" diameter stick if there's not sticking part, which would get caught on the wheel.
Dec
14
awarded  Popular Question