64

No. You should always ride with a white light facing forward and a red light facing backwards. If you want additional illumination, you can add multiple white/red lights in the appropriate direction. Amber/yellow lights can be used facing any direction for additional visibility. The first reason is that it's the law: (a) Every bicycle when in use during ...


37

Wood et al. (2009): Drivers’ and cyclists’ experiences of sharing the road: incidents, attitudes and perceptions of visibility. Accident Analysis and Prevention, 41 (4), pp. 772-776 About differences in the visibility as perceived by bikers and drivers: The largest difference relates to the visibility of cyclists using lights on their bicycles, where ...


28

Take the lights and anything else thats likely to be stolen off your bike. For things that can't be removed easily, you may want to use something like Pitlock security skewers (or security bolts) or glue in ball bearings or similar into the head of the bolts (which will make them hard to remove when you need to remove them, but a casual thief can't remove ...


21

If your light is not sealed, and you can see a battery that looks like this (the colour/color does not matter) then you can pop out all the old batteries and fit new ones. Replace all the batteries in one light together, don't mix and match. The old ones should be recycled properly. If the current batteries are soldered in, then its still possible to ...


17

In terms of accessories like lights, GPS, etc. the only way to be safe is to remove them entirely. Remember that if something is quick-releasable for you, it's also quick-releasable for thieves. Bike lights will frequently get stolen even if they aren't easily removable, because they're valuable. There is an assortment of "anti-theft" bike accessories ...


16

First, hello, and welcome to Bicycles SE. Sorry to hear about your manufacturer collapsing... that's really unfortunate, particularly for a higher-cost item like an e-bike. My guess is that 18350950 mAh 3.7 Li-Ion is actually "18350 950 mAh 3.7 Li-Ion", meaning that the pack is comprised of 3.7 volt 950 mAh 18350-type lithium ion battery cells. ...


15

I run a bike light testing and review site called The Bike Light Database which started as a series of blog posts for the Bicycles Stack Exchange community blog. I've personally tested dozens of lights, and have read lots of info online about countless more. I also speak with lighting companies regularly, have visited a bike light factory in person, and have ...


13

OK so I do a lot of bike light reviews. I originally started writing them for this very site's community blog, and now I run a separate website called The Bike Light Database. Has anyone used one? I can't seem to find a review of the dang thing on youtube, as popular as they are supposed to be! I've reviewed this light specifically, and can say that ...


13

If we check the helmet's documentation, there's guaranteed to be some legalese text in there similar to: modifications to the helmet will void warranty, and may decrease the effectiveness of the helmet. Do not modify your helmet. Or words to that effect. A helmet has three main components A foam inner, to absorb impact and "lengthen" a ...


12

I have actually dramatically improved the cutoff on my 1200 lumen dual LED (just for reference) with a sort of brim made out of aluminium plate. On road I run it on minimum brightness (guessing about 1/4 -- 1/3 power). On pitch dark bike paths I do change the angle a little as well as turning up the brightness. Super-speedy sketch (go inkscape!): The ...


11

Something like this accessory is what you need: Can be fitted onto wired or meshed bicycle baskets. This specific model is made by the "Rixen & Kaul" and can be found in many online shops. E.g. Amazon - Rixen & Kaul Light-Clip Basket Fitting - Black.


11

Blinding road users will be the result of the following factors: Total light output Mirror design (how is the light shaped) How you aimed your light Most trail lights (and high output battery powered lights) use a mirror that casts the light in a symmetrical shape. This means light is cast up, down, left and right. Light cast above the horizon is what ...


11

The light is better on your handlebars or fork than on your frame - the frame lags and always points at some tangent to where you're going while turning, so either you need a really wide beam, or you have to ride into the dark. Fortunately there are solutions, and some of them are pretty vintage. Steerer mount. In the days of threaded headsets, there was ...


10

Car headlights are more complex than bike lights. The beam is 'shaped' to throw light away from oncoming drivers and has a sharp cutoff on dipped beam. therefore bike lights will always cause a greater degree of glare (for relative brightness) than car lights. Point the beam so its shining at the ground about 10-20meters in front, and slightly towards the ...


10

Okay, so I did some research into this and here's what I found: The Yamaha drive offers enough power for many, but not all, ebike lights to be connected. For example, Supernova M99 Pro won't work -- that's my favourite bike light. But lights like the Lupine SL S or Supernova M99 Pure work just fine. To install the light, one needs to remove the protective ...


9

In Germany, all bicycle lights above a certain lumen value have to have a low beam feature, so it's pretty standard here. So, if you do not want to kludge your existing headlight get a german one, e.G. Busch und Mueller Headlights always have a low beam feature, which they especially advertise. Here is their english web page. http://en.bumm.de/


9

As already suggested by @Batman, have a look at this Bike Light Database write up. What to look for ... LED - with cheap lights don't believe the claimed Lumen, Look at the LED specification - a CREE XL-M T6 or U2 are probably the one you want. There's not much difference in them, you typically get about real 600 Lumen out of the cheap lights, more ...


9

Fortified Bike sells bike lights that are designed to be theft resistant. They're made of heavy aluminum and use security screws so most thieves won't have the proper tool to unscrew it. The also sell a security seatpost clamp to help keep thieves from stealing the light by stealing your seat. I haven't used their newer rechargeable lights, but I've had ...


9

Safety is not an absolute. The transition from Safe to Unsafe does not happen immediately. The state of the helmet is probably considered not safe, compromised, but not unsafe. Much will depend on the fitting strength - are those attachments going to break away quickly with little additional force on your neck or will they hang on until well after your ...


8

Sellers on Amazon.com have a lot of leeway in the naming of their products and advertising script they use. In that sense, Amazon is becoming more and more like ebay. Rather than the feedback (or lack thereof), the technical specs of the light should be warning you to stay away. Powered by only 3xAAAs, there's no way this light is getting more than a few ...


8

You can get lights that are powered by a dynamo (generator) in the front hub. Combined with bright LED front and rear lights you get excellent visibility (both seeing and being seen) and very little maintenance. The downside is that the equipment is not inexpensive – figure you'll need to spend at least $250 US for a front wheel, headlight and taillight. My ...


8

Just the color. The products are identical. Light & Motion lists their different color variations as separate "products", probably due to some limitation of their store site engine. Note that there is an Urban 800 Fast Charge version, which in addition to coming in different colors, actually is a different product physically.


8

You would be entering in a very busy market with no obvious advantages. Let's look at the two types of LEDs that you might use: If you're using inexpensive and low-power 5050 LEDs (15 lumens@350mW; usually ganged in groups), then you could power the lights off button cells (two CR2032s would power one 5050 LED for about 3 hours; 3 x 5050s for one hour) but ...


8

The most important part of a vehicle light is the optics because you want a beam with a precise shape and distribution in order to illuminate the road evenly, without wasting light into the sky or blinding people coming in the other direction. These optics are very difficult and expensive to design. It is easy to make a circular lens which will throw half ...


7

The only helmets with built-in light mounts I know of are by Bell, which can mount the Blackburn Flea. I don't know if any of them are full-face. The Flea is pretty useless for offroad riding, it's too dim. Lights usually mount up with velcro straps through the vents. When I was racing my MTB after dark Ay-Ups were common - small, extremely bright, and a ...


7

You can't directly convert because you need the distance and beam angle. Lumen is a measure of output while lux is how much light is falling on an object. 5 lux is very dim indeed, less than a sliver of moonlight on a dark street. I should ask, though, are you sure it said lux and not lumens? If it's a single led run from AAA or CR2032 batteries, then you'...


7

This is a halogen light. Such lights are usually powered by a bottle dynamo. That is a small electric generator that is driven by the front or the rear wheel. There is usually no switch. One simply engages the dynamo by pushing it down, such that a spring presses it against the flank of the tyre. Some bikes have a hub dynamo instead. In this case there ...


7

Most modern lights use rechargeable lithium ion batteries. Those come in three form factors: Pouch cells, cylindrical cells and coin cells. Pouch cells come in a lot of different dimensions which gives manufacturers a lot of flexibility when designing the product. They also have cables directly attached and are quite fragile. Good for weight and size but bad ...


7

No, this is not safe. The light very likely will blind/dazzle or at least annoy oncoming traffic or pedestrians. I do not know how strong yours is, but if I shine mine directly into the face of an oncommer they will be blind for a few seconds, especially in darkness. Related: You won't be able to adjust the light on the fly in a safe manner. You won't get ...


6

Answer: Yes - anything on your helmet may affect its ability to function. Remember the skiing accident that gave Michael Schumacher brain damage? http://www.telegraph.co.uk/sport/motorsport/formulaone/michael-schumacher/10640839/Michael-Schumacher-skiing-crash-did-helmet-camera-cause-head-injuries.html That was not cycling, but he managed to run his ...


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