Questions tagged [safety]

Riding safely, safety equipment, and safe places to ride.

Filter by
Sorted by
Tagged with
2
votes
5answers
3k views

What can cause the front wheel to lock up when going over a small bump?

I was going over a bump. When the front wheel hit the bump, it suddenly stopped moving, the rear wheel lifted off the ground, and I was thrown face-first onto the road. I sustained injuries to the ...
23
votes
7answers
9k views

How can I offer a test ride while selling a bike?

I am selling a bike to someone I don't know from Craigslist. I expect that the prospective purchaser will want to test ride the bike before making the purchase. How can I prevent them from riding ...
2
votes
2answers
376 views

Help please - Dent in top tube of double butted aluminium frame

I have a ridgeback velocity which is labled as double butted aluminium. Around the middle of the toptube is a dent shown in the photo. There is also a short line above it which I can feel with my nail....
18
votes
5answers
11k views

Child seat: how to keep the child's head from falling forward?

When my child falls asleep in the child seat, his head falls forward. How can I keep his head back? The child seat is a modern type with a back that can be tilted back to prevent that. It works, but ...
5
votes
2answers
278 views

Riding with a Gates belt past its due replacement mileage: can it snap or other risks?

I just purchased a belt drive bike (Gates CD). Maintenance free, according to the BS and what I have read online. The only attention is to replace it every 5000 km. Since I usually ride around 8000 ...
13
votes
9answers
24k views

How to keep glasses dry in the rain?

Today in the middle of my ride it started raining and I could barely see due to the amount of rain on my glasses. This is basically what I could see I have jokingly talked about using Rain-X on my ...
2
votes
1answer
157 views

Yellow anti-rotation washer, Shimano Nexus 3 speed with trailer?

Should I keep or remove the yellow anti-rotation washer when installing a child trailer to my e-bike (EcoRide with Shimano Nexus 3 speed)? The trailer installs through the wheel axle (see attached img....
8
votes
7answers
4k views

Safety comparison, downhill mountain bike vs. downhill ski

My twelve-year-old recently tried downhill mountain biking when we were in Lake Placid. He found it thrilling and would like to continue with this new sport now that we are back home. I am hesitant ...
3
votes
1answer
2k views

Hydraulic Disc Brakes Not Locking Up

So as the title says my disc brakes are not locking up. They are gripping but not locking. My older brakes were leaking and i changed them with Shimano Deore BL-M596. I have searched online and found ...
9
votes
4answers
6k views

Is it a good idea to get a narrower front tire and a wider rear tire on a road bike?

I am currently running Continental Grand Prix S 4000 in 23-622 / 700x23C front and rear. I am about to buy a new set of tires for my road bike and am fancying a smaller tire for the front and a wider ...
24
votes
9answers
23k views

Is having your hands “on the hoods” of drop handlebars safe for braking?

I've never had a bike with drop handlebars, but may get one for commuting in busy London (likely a single-speed with mechanical disc brakes). This would mean riding with my hands mostly on the hoods, ...
4
votes
4answers
2k views

Why do only downhill mountain bikers wear full face helmets?

A lot of cyclists are concerned about safety and having the proper equipment, but I have never seen a cyclist riding in the city with a full-face helmet, nor have I seen a full-face helmet marketed ...
2
votes
2answers
239 views

Axle is too short

I recently bought a second hand bike which was originally sold with a flip flop hub to fix up as a project. The person I bought it from gave me a rear wheel with a geared hub. However, when I put ...
8
votes
4answers
3k views

Why is an old chain unsafe?

I recently took my bike in for a service and the mechanic urged me to replace my chain, potentially at great cost (might need a new wheel). He said it might jam or pop off. He couldn't explain to me ...
5
votes
3answers
865 views

Front wheel oscillation

I'm not sure if oscillation is the right way to describe this, but when I'm riding at speed (say around 35-40 km/h) and take one hand off of the bars, the bars shimmy or oscillate – kind of like they ...
5
votes
2answers
179 views

Which kind of test has bike parts to pass to be sold?

This is a question regarding bureaucracy/testing. What are the quality tests / standards that a bicycle and/or its parts need to pass before access the market? I am thinking about Germany/USA and ...
10
votes
5answers
2k views

Which parts of a wrecked bike would be OK to use or sell?

A few months ago I was in an accident with a car on my way home from work (oncoming car turned left in front of me). My bike was severely damaged, the frame broke in two and the front wheel is bent ...
26
votes
11answers
52k views

Carbon bikes make me nervous. Can you ease the tension?

Is it only me, or do Carbon bikes make others nervous! I realize that carbon fibre is strong, but for some reason, having a bike that isn't made out of metal seems like asking for trouble. My main ...
15
votes
5answers
1k views

Most favoriable collision with a car? How should I act before collision, supposing enough time?

Suppose a car is going to collide with you. What can you do to minimise the consequences? By collision I mean that it may be intentional or an accident. Anyway I am looking for tips on how to act in ...
2
votes
7answers
4k views

Best Tires for Cannondale Bad Boy 4

I'm just getting into biking and last week I just purchased a Cannondale Bad Boy 4 from REI. They still have it in the shop as I'm in the processing of moving and they agreed to hold onto it for me. ...
99
votes
5answers
29k views

Safety data: Which is safer, head/tail lights which blink or emit a steady beam?

My head and tail lights can be set to blink or emit a steady beam of light. I usually set my rear (red) light to blink, because I believe it makes me more visible at night. My friend argues that it ...
18
votes
6answers
6k views

Night cycling: Is it worth using electroluminescent wire?

It's currently winter in the UK, so for my commete to and from work I need lights and reflective surfaces for safety. I've read about local people losing their lives cycling, so I don want to make ...
20
votes
6answers
7k views

Should unconventional colors be avoided for lighting?

Red/amber lights in the rear of the vehicle, white lights, in front of it: that is the good old convention and certainly switching their places is a bad idea. A quick search, however, shows other ...
7
votes
2answers
3k views

How does a neck brace work?

I've done a bit of research but can't seem to find much information on how neck braces actually work to protect the neck. There are many views on whether they are actually effective in reducing ...
1
vote
1answer
179 views

Frame with dent

I recently bought a bike and then realized it had a dent on the top tube. I would like to know your opinion if it is safe to ride. The bike is a Devinci Cameleon made from double butted aluminium. The ...
8
votes
5answers
4k views

Camera alternatives for commuting (2014 version)

After a few near misses by cars and two mates actually being hit I want to start using a camera for taping video footage. These are my requirements: Long battery life (3h+) Inconspicuous (...
10
votes
4answers
3k views

Banged frame: Is it still safe to use?

My girlfriend's bicycle was vandalized by a neighbour. It seems like they banged it with a hammer or something right in the middle of the frame. Is this still safe to use?
21
votes
13answers
2k views

How can I look unsafe to a car driver but be safe

This research seems to show car drivers give you more space if they think you are more likely to do something unpredictable. It claims that where a cycle helmet often results in drivers giving you ...
8
votes
1answer
3k views

What is the best time to cycle during the day (traffic)?

I started cycling a year ago and I have a favourite route for my time trial training since it is very hilly. However, I cycle on a major road (just outside town) and thus I like to cycle when it is ...
10
votes
4answers
3k views

Roadbike with aluminium wheels in mountains. Is it safe?

I'm planning my upcoming trip to ride real mountains in Spain on my road bike. So far I used Mavic Ksyrium aluminum wheels but mostly on flat areas. I'm not confident with going downhill on this ...
4
votes
2answers
195 views

How do I determine what types of maintainence I need to perform?

I just got a new bike and I want to make sure I’m able to keep it up properly. I am entirely new to this. Edit: thank you all for your responses, I’ll keep these all in mind and I’m adding them to my ...
3
votes
4answers
585 views

In cycling friendly cities, how do near-sighted cyclists who need glasses manage to bike to work or school in the rain?

In cycling friendly cities, how do near-sighted cyclists who need glasses manage to bike to work or school in the rain? When I say cycling friendly cities, I'm referring to cities such as Utrecht, ...
5
votes
3answers
939 views

What's this part of the bike, and is it safe to alter it?

The video shows someone installing a gps bike tracker, however there is not much room in the top of the head tube, so he hammers down what's already in there in order to make room for the tracker. In ...
23
votes
4answers
3k views

Can road bumps excite frame eigen frequencies?

During my last bike holiday I have happened to ride downwhill on roads which had transversal stripes to mark the approaching of a turn. The stripes were made with road paint, and were slightly higher ...
18
votes
13answers
5k views

Why should I use a mirror?

In a comment to an answer about helmet replacement mention was made of a mirror and perhaps suggesting that a helmet was merely a good place to mount a mirror. I, hopefully humorously, suggested that ...
2
votes
1answer
2k views

Are full carbon forks less prone to failing from hidden defects than those with alloy steerers?

Are full carbon forks less prone to failing from hidden defects than those with alloy steerers? Even though the mechanics couldn't find problems with Richard Stanton's bike, his fork failed ...
6
votes
6answers
499 views

Can I run a red light at a T junction?

I was wondering if I was on a bike could I run a red light if it is impossible for me to get hit by a car? (Unless the car drives into the bike lane). I made a quick picture on paint to try and show ...
3
votes
2answers
135 views

Third eye helmet mounter mirror swivels too much

I've got a "third eye" type bike mirror attached to my helmet. It has two points of articulation: one near where it mounts to the helmet, which controls how far it swings up, and the other near the ...
1
vote
1answer
181 views

Would the airzound bike horn cause hearing damage even if used well under the duration limit? [closed]

Would the airzound bike horn cause hearing damage even if used well under the duration limit? The Airzound is 115 dB which means according to the NIOSH standard, the duration limit is 28 seconds ...
21
votes
12answers
9k views

Is standing up and pedaling on multi-gear bicycles a bad idea

After reading While pedaling standing up, bike crank gives in as if shifting, what is causing this? , I was thinking "one should probably not be standing up to pedal under normal circumstances". Is ...
5
votes
3answers
2k views

Safety guidelines when using MTB clipless pedals on a road bike

Yesterday, I went for a ride and my legs felt really great (hadn't been cycling for about 2 weeks) so when I was climbing on a hill, I decided to go on a full blown sprint and unfortunately... somehow ...
29
votes
7answers
999 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, ...
7
votes
3answers
794 views

How to cross major road 3 way intersection

I'm curious about the best way to get across this intersection. I will be traveling north (top of the picture is north), and want to turn left at this light. Path indicated by red arrows. As can be ...
110
votes
31answers
55k views

How do I deal with a dog chasing me when I'm touring?

Once I was riding my road bike down a rural road. I heard barking over my shoulder and saw two dobermans running toward me. I can't think of a time in my life that I felt more endangered. I reacted ...
1
vote
1answer
296 views

My friend wants to sell a second hand helmet, I strongly dissagree, am I correct?

My friend has recently purchased a new bike. The guy who sold it to him was clearly giving up the sport, so he gave to said friend his helmet as well (MET parachute for MTB). As my friend already had ...
20
votes
8answers
5k views

Bicycling and a Right Turn Only Lane?

When commuting with a bike I usually stick to the right lane (I am based in the USA). When approaching a right turn only lane while biking, should I stay in the turn lane and signal to the car behind ...
0
votes
2answers
150 views

Bent front wheel

I own a 27.5" mountain bike and its front wheel is a little bent. Not too badly, but it is noticeable when riding or spinning the wheel. It probably wobbles about 1/4" or so. I have disc brakes, so it ...
11
votes
4answers
989 views

Is vehicular cycling legal in France?

I learned to ride in Toronto, where behaviour such as the following is legal: if there is not enough space to share the lane safely with another vehicle, it is legal to ride near the centre of the ...
0
votes
3answers
5k views

OK to ride with a slightly bent mech hanger?

My rear derailleur took a knock from a fall, and the entire shifting range moved inwards by about one sprocket width. I suspect, but am not sure, that the mech hanger got slightly bent (could be ...
1
vote
1answer
96 views

Best rear view mirror to purchase? [duplicate]

I have seen a lot of different types of Rear View mirrors. Ideas on which mounting/type is most used and why? ie: sunglass frame mounted, helmet mounting, handle bar mounting, or others. I ride both ...

1
2
3 4 5
9