On 12/02/18 14:25, sms wrote:
On 2/12/2018 5:00 AM, Sepp Ruf wrote:

No, Joerg is claiming that ordinary StVZO tail lights that are visible
from
500 meters in Europe are not good enough for his and fellow Californians'
impaired sense of vision, and why he feels tail lights that feature
5000 ft+
visibility are preferable.* And he is trying to confuse what can
actually be
powered by dynamo with what he "remembers" seeing, back then, on
inspecified
cycles in traffic.

The StVZO lights are woefully inadequate. Don't forget that you need one
that is visible in the daytime as well. You don't need a 1500 lumen tail
light, but many are ridiculously weak, 10 lumens, or even less.

One that looks reasonable is
https://www.lezyne.com/product-led-sport-laserdrive.php with flash
modes up to 250 lumens for daytime flash mode. But I don't see a way to
mount it to a rear rack.

Personally I would not be bolting lasers to the rear of my bile when for
various reasons they may shine in peoples eyes.

Must say

https://www.lezyne.com/product-led-s...p#.WoKA3q3AL0o

Looks quite handy for one of my bikes that doesn't have a dynamo.
Decent run time at 15 lumens.