Advertise on Bikeforums.net



User Tag List

Results 1 to 7 of 7
  1. #1
    vol
    vol is offline
    Senior Member
    Join Date
    Jul 2010
    Posts
    2,482
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)

    Lifespan of the lights?

    Not talking about battery life. I'm interested in how long, after you bought the lights, the lights themselves can function--the regular battery (such as AAA or AA) operated, headlights and taillights. I suppose the leds or the bulbs can burn out after too many uses? And if your lights are subjected to rain more than a few times, it may also affect the working life of them?

    For how long have you used the same lights? After more than 1 year and rare rain rides, my lights are still fine. Anyone's lasted many years with regular riding?

  2. #2
    Senior Member
    Join Date
    May 2006
    Location
    PDX
    My Bikes
    Trek 1200, Kona Honky Inc, PX Stealth
    Posts
    641
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I think the LEDs will outlast you. I tend to lose the light long before the components die...as long as I buy a decent light that is. My current SuperFlash is 3 years old. Id have older ones but they sometimes fall apart if you hit a decent bump.

  3. #3
    Certified Bike Brat Burton's Avatar
    Join Date
    Jan 2011
    Location
    Montreal, Quebec
    Posts
    4,203
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Have had a number of front and rear lights with different technologies over the years. Halogen, sealed beam, xenon flash, LED. Some were self contained with an internal battery pack, some used an external battery pack. Failure in some cases was caused by leaking AA cells which is why I've switched entirely to rechargables. I've yet to have one leak. Switches ocassionally fall apart and most units aren't waterproof. The cheaper it is the faster it seems to fall apart.

    Aside from a pair of Lightmans (which still work fine after 15 years), the other unit that lasted the longest was a halogen caving headlamp that has seperate watertight battery holder and is also fully functional after 15 years. Neither of those were made in China. Nothing else lasted more than a season or two.

    Mechanical failures (mounting brackets that break off) are what I see most often.
    Last edited by Burton; 01-08-12 at 10:52 PM.

  4. #4
    Fat Guy Rolling dcrowell's Avatar
    Join Date
    Jul 2008
    Location
    Louisville Kentucky
    My Bikes
    Bacchetta Agio, 80s Raleigh Record single-speed, Surly Big Dummy
    Posts
    2,439
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    LEDs won't burn out for decades. As said above, mechanical failures are most common. My Dinotte headlight has an issue with the power cable. It still works, but probably won't for long. As it was an expensive light, I can probably send it back for refurbishing.
    Car-Free IT Geek
    My blog: fatguy.org

    Bikes: Surly Big Dummy, 1980s Raleigh Record single-speed conversion, Bacchetta Agio

  5. #5
    Senior Member
    Join Date
    Oct 2011
    Location
    currently NYC area, previously, Bay Area
    My Bikes
    1974 Raleigh Grand Prix
    Posts
    501
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The lifespan of some LEDS is MUCH less than an average human lifespan. (And of course, they both vary.)

    Blue ones in particular will often lose most of their brightness after only a few years of being left on continuously. Using them at less than their rated current or pulsing them (using PWM) in some cases extends their lives or allows them to be run brighter for longer.

    And of course, adequate heat sinking is important on power LEDs.

    Consult the LED manufacturers data sheet. And bear in mind that for some of the figures, we really don't know.

    However, its safe to say that LEDs will last longer in many applications than anything else that is affordable to most people.

    But in applications where the lights need to work for thousands of years, (and there are some!) they use different lighting methods.
    Last edited by christ0ph; 01-09-12 at 08:44 AM.

  6. #6
    Capt Sensible
    Join Date
    Sep 2004
    Location
    Vancouver, Canada
    My Bikes
    Kona Sutra, Cramerroti 650C
    Posts
    72
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by dcrowell View Post
    LEDs won't burn out for decades. As said above, mechanical failures are most common. My Dinotte headlight has an issue with the power cable. It still works, but probably won't for long. As it was an expensive light, I can probably send it back for refurbishing.
    So what is the typical lifespan of a Dinotte light engine. Not just the LEDs, but the rest of the electronics, mechanicals, etc?

  7. #7
    Fat Guy Rolling dcrowell's Avatar
    Join Date
    Jul 2008
    Location
    Louisville Kentucky
    My Bikes
    Bacchetta Agio, 80s Raleigh Record single-speed, Surly Big Dummy
    Posts
    2,439
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Capt_Sensible View Post
    So what is the typical lifespan of a Dinotte light engine. Not just the LEDs, but the rest of the electronics, mechanicals, etc?
    I have no idea. Mine is fine other than the cable insulation broke from me handling it too roughly. I would guess it would be decades if treated well. The batteries, like all rechargeables, have a shorter lifespan - mine are going on 3.5 years and battery life is about half what it used to be.
    Car-Free IT Geek
    My blog: fatguy.org

    Bikes: Surly Big Dummy, 1980s Raleigh Record single-speed conversion, Bacchetta Agio

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •