How is its low-speed brightness? When riding up a steep hill at &lt; 5mph, does it dim to compensate for the dynamo's lower power output?
411453
The light comes on when I walk my bike so it should be ok on a hill. I don't see an appreciable difference in light output. I have a Shimano Alfine hub.
677919
Sorry for the late response. .. it definitely is bright enough for the job.. I read some prople sayin to get a better rechargeable lithium battery, I would agree, constant on run time is roughly 1-2hr.. plus zoom is nice.. but it's not a circle. .zoms all the way down to a bright square with lines.. (giant L.e.d)
1698595
Acutally it has 5 levels of brightness. You can adjust it by yourself. Well, of course level 5 is very bright. I use level 1. That's perfect for me.
726150
I run my planet bike Blaze 1 watt with a Joule HG Hub Dynamo, Light is excellent.Japan & Germany make good ones also.
274695
No, it never dims on my unit. Sounds like a failing alternator. Alternators fail over time in a lot of cases, not suddenly.
2008192
Not sure the lumens but it is on *whenever* I ride -- day or night. On high blinky in the dark it is annoying, but during the day I leave it on that setting and it seems to get attention.
805320
Yeah it is on full brightness. I would consider it too bright for bike commuting
1160855
I owned this generator, i don't have a speedometer but i think that it might be around 4mph or so (dim light, almost useless). It's not much, but if you slow down it goes off immediately, and if you accelerate it brights up even more. Consider i was using it in and old, english style bycicle in a crowded city. I ended up reselling it because the weight of the bycicle plus the generator made it to heavy AND noisy. I think that if you have a lighter bike (and/or with shifts) and you don't mind the noise, it's ok. Hope this was useful.
187206
It is! It doesn't light up far ahead of cart but is plenty bright to drive 10 mph. I use them often and never had any trouble seeing the road. If you're really concerned buy the version with twice the output if you have money to blow.
375725
I haven't had any probs with the light being reliably mounted in place. Having said that, I ride on road only so no bumps (weather here in CA is pretty good). My subjective opinion is that it shouldn't be a problem, but then again perhaps for mountain biking the mount won't hold up. I'm sorry I can't be of more help.
1160853
Its low speed - I can sell you mine for low discount - I sold my bike and have the generator with lites. I only used it a handfull of times. I would say 2 miles per hour will get the lights on. Higher speeds will give more power to the light. It works great.
2100822
I am very impressed with my light. I only use the rechargeable battery as I get the brightest results. There are also 5 light settings which can be chosen by turning the light on and "double clicking" the on/off button 1. Brightest 2. Mid brightness 3. Dimmest setting 4. Flash 5. SOS. you may have it on the wrong setting. Also, the lense slides in and out. Compressed would be a very wide light, making it dimmer. Sliding the lense out (grand the head and tail ends and pull) gives a more direct and brighter beam of light. Also. Your battery or batteries may be close to dead. Try replacing the batteries or recharging the battery. Again I prefer the rechargeable. Lastly. You may not be charging your battery fully. It must remain on the charger until full. When you place the battery in the charger the indicator light will light up red. When full it will change to green. And depending when the last time the battery was charged will take a long time. I work overnights at work once a month so I charge it before my overnights start. When the week is over I don't charge it till the next month. I have had it take 24 hours to fully charge. But that's my doing. I'm sure if you charged it once a week or so it probably won't take as long. I hope this helps. I spent $40 on this light and it's the best $40 I ever spent. I dropped the light in a pond and dropped it from 150ft+ in the air and it still works as new. Very tough and reliable light. Like I said. Hope this helps
875551
It depends on the distance you throw the beam. It's ability to illuminate much is greatly decreased after about 20 to 30 feet. that is why I rated it low for higher speed after dark riding. It would be fine for city streets. I would approximate it to cast a beam a little narrower than one lane of a street at about 20 feet. That assumes you point it down for this perspective. if you tilt it up more it will throw a wider beam further down the street, but you drastically lose brightness. The sweet spot is probably 20 feet out and 8 to 9 feet wide.
2008200
They don't list lumens, but it's def. brighter than my 40lm Blackburn Flea; I'd guess ~60lm. It's great as a tail light. I've viewed it at 100m as a headlight in bright sunlight, and it is clearly visible; but obviously not as attention grabbing as the 150-500lm "drls".
1818754
It works great for lighting up trails. I use the NiteRider on my helmet and a second, cheaper light on my handlebars. With this setup, I usually run the NiteRider at the medium setting and it gives off more than enough light. The high setting is very bright.
1043584
I get two one hour rides with it starting to run low on the 3rd. I just set it on the porch to charge. Don't expect as much light as a regular halogen but plenty for me.Bill
1913471
I would say it is bright, not "SUPER" bright. It meets OEM specs and is bright enough to serve as an effective turn signal. You need to replace them every 3-4 years as the color fades over time.