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-   -   How long do your halogen bulbs last? (https://www.bikeforums.net/commuting/79015-how-long-do-your-halogen-bulbs-last.html)

slvoid 12-12-04 08:54 PM

How long do your halogen bulbs last?
 
I have a light & motion that's had about 30 hours on a halogen bulb before it blew. Is this normal? I go through some pretty bumpy roads on my commute though.
I'm going back to it after my cateye crapped out on me.

XzEn54321 12-12-04 09:06 PM

Really really long. Your light is defective, take it back and get a new one.

X-Zen

VermontRides 12-12-04 10:04 PM


Originally Posted by slvoid
I have a light & motion that's had about 30 hours on a halogen bulb before it blew. Is this normal? I go through some pretty bumpy roads on my commute though.
I'm going back to it after my cateye crapped out on me.

I would check the switch, and internal wire connections (at the head where the bulb is located), if your light uses a MR11 bulb it is sealed and mine (other light brands) have lasted well over 300 hours. I've never actually burnt a bulb out. The switch to bulb internal wires are often times too short and soldered on one end. Most light bulb failures I've seen (mine and others, several brands) are actually the soldered connection failing. The connection can usually be resoldered. Rough roads would definitely accelerate that type of failure. All of my lights have eventually succumbed to corrosion of connectors, and eventually battery failure (but we're talking hundreds of hours usage and at least 3 or more salty winters).
Hope this might help.
By the way which CatEye were you using? I'd be interested to know what model, how long it worked, etc.

Bill

slvoid 12-12-04 10:35 PM

The new cateye el-500. One of the electrical contacts inside the sealed lamp head came off.
The bulb in the light & motion isn't the type with the integrated reflector, it's just the bulb. I took it out and sure enough, the tungsten filament broke.

JavaMan 12-12-04 10:50 PM

My 10 watt halogen bulb burned out after about 6 weeks of use. The bike store just gave me a new bulb. The new bulb has lasted 2 years and still works. Sorry but I don't know how many hours that is. Maybe 150.
Tom

jab 12-13-04 12:22 AM

My roomie and I both bought the same 12V lighting system back in August; we use mainly our 10W bulbs, for about an hour each time, 4-5 times per week. Our original 10W bulbs blew within perhaps two weeks of each other, each with less than 100 hours on the clock.

As an (experimental) fix, I've designed a soft-start circuit to protect them at power-on; I just posted it over in my "Hello, and my "Total Geekiness" entry" thread.

My bike headlights are among the last battery-powered incandescents I own; LEDs rule.

JAB

steveknight 12-13-04 12:34 AM

vibration can be a problem. Plus there are lots of cheap bulbs out there. just because the company charges 20.00 for a 2.00 bulb does not mean it is a good bulb.
I hope LEDS take over soon. but right now any good LED light costs as much as a HID light and puts out only about 10w of halogen light.

andygates 12-13-04 05:28 AM

A good bulb should last a winter - after that they go kinda yellow anyway. Less than a month and I'd be taking it back for replacement.


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