"Frank Krygowski" wrote in message
news
On 2/8/2018 3:08 PM, Joerg wrote:
On 2018-02-07 07:01, AMuzi wrote:
On 2/7/2018 12:06 AM, Tosspot wrote:
On 07/02/18 03:56, Frank Krygowski wrote:
On 2/6/2018 1:52 PM, sms wrote:
My wife's Lezyne Deca 1500XXL stopped taking a charge, at
all. Taking it apart, I saw that the batteries were made
in July 2015. Not too good for it to stop working that soon.

Some of my bikes have dynamos that are 30 years old. They
just keep going and going and going...

I bet the lights don't, as he peers at a collection of
CYOs[1] and a recently defunct Flat-S. Tbf the Flat S is
around 7 years old.

[1] Not one lasted 18 months, they simply aren't waterproof
imho.

My regular glass bulb lamps go 6~8 years between bulb failure in daily
use. YMMV


Ye olde 2.4W + 0.6W with a dynamo? When riding at a good clip, meaning
north of 15mph, those never lasted much longer than a month for me. Even
if they didn't blow their filament right away the bulbs turned black
inside and became dimmer than they were already to begin with. When I was
a teenager I started equipping my bikes with what the automotive industry
already understood over 100 years ago, brighter lights, a battery and
charging system. Soon the German police wanted to give me a ticket for
"non-standard" lighting. Luckily by that time I was a Dutch resident and
they had to let me go.

Those 2.4W bulbs were a joke.

I think you missed about three generations of dynamo lighting technology.

My first dyno had a vacuum bulb. It was terrible at lighting the road, but
fine as a "be seen" light, better than the battery lights available at the
time. Yes, the bulb blackened a bit after a while. That meant the bulb
needed to be changed. And yes, it wasn't wonderful overall; but at that
time (early 1970s) I knew of no really good bike light.

Most bulbs have vacuum - some Sturmey Archer ones were gas filled.