"Sees-koo-wee-hah-nay" > wrote in message
ps.com...
> On Mar 12, 5:03 pm, "Dave L" > wrote:
>> "Sees-koo-wee-hah-nay" > wrote in message
>>
>> oups.com...
>>
>> > On Mar 12, 12:01 pm, wrote:
>> >> There you have it- 14 months and approx 15k miles. Installed Jan of
>> >> last year, left front crapped out this weekend. Great lights, big
>> >> improvement over the oem bulb. Maybe $32 IIRC.
>>
>> > They have an average life of 250 hours.
>>
>> They cast a nice white light but their lifespan is bad. One went out in
>> under a year and the other followed a month later. Next time one goes
>> out
>> I'll replace both with something different.
>>
>>
>>
>> > Just passing this along, not looking to debate it:
>>
>> >http://www.danielsternlighting.com/t...good/good.html
>>
>> > "If you want to improve your lights and vision, choose Osram
>> > Silverstar (that is not same than Sylvania Silverstar, but sold as
>> > Candlepower Super Bright Light in the USA) or Philips Vision Plus
>> > bulbs.
>>
>> What is the lifespan of these, and how do they compare? I don't want to
>> blind other people coming the opposite direction..
>>
>> -Dave
>
>
>>From the Daniel Stern site (note the lumens for a stock bulb and a
> Sylvania Silverstar)
> the other bulbs I mentioned give 100 more hours service on average. I
> am looking to replace my stock bulbs which is why I am interested in
> this thread, I have not made a descision yet.
>
> "Here's manufacturer data, from internal engineering databases, for
> output
> and lifespan at 13.2v for H1 bulbs. The numbers here are a composite
> of
> values applicable to the products of the big three makers (Osram-
> Sylvania,
> Philips-Narva, Tungsram-GE). Each manufacturer's product in each
> category
> is slightly different but not significantly so. I picked H1-type bulbs
> for this comparison, and while the absolute numbers differ with
> different
> bulb types, the relative comparison patterns hold good for whatever
> bulb
> type you consider. Lifespan is given as Tc, the hour figure at which
> 63.2
> percent of the bulbs have failed.
>
> H1 (regular normal):
> 1550 lumens, 650 hours
>
> Long Life (or "HalogenPlus+")
> 1460 lumens, 1200 hours
>
> Plus-30 High Efficacy (Osram Super, Sylvania Xtravision, Narva
> Rangepower,
> Candlepower Bright Light, Tungsram High Output, Philips Premium):
> 1700 lumens, 350 hours
>
> Plus-50 Ultra High Efficacy (Philips VisionPlus, Osram Silverstar,
> Narva
> Rangepower+50, Tungsram Megalicht, but not Sylvania Silverstar):
> 1750 lumens, 350 hours
>
> Blue coated 'extra white' (Osram CoolBlue, Narva Rangepower Blue,
> Philips
> BlueVision, Tungsram Super Blue or EuroBlue, Sylvania Silverstar):
> 1380 lumens, 250 hours"

I'm not wasting any more money on the Silverstars. May put the originals
back in when the time comes. There was really nothing "wrong" with them
anyway. Just liked the whiter light.

-Dave