> Tue, 15 Dec 2009 19:37:44 -0600, Tim McNamara:
> >I don't think any of the riders I know with dynamos are using a
> >wired taillight, nor do I. The battery powered LEDs are good
> From a european point of view: The fast majority of bikes with
> (hub)-dynamos let the generator power front *and* rear light. I see
> no advantage of a battery powered rear light. Even buying and
> changing the batteries once is more effort than wiring the rear
> Also there is a lack of good rear lights which can be permanently
This is actually a problem with LED taillights from my perspective.
They are not designed for frame mounting, they are designed to be
clipped onto clothing, courier bags, etc. There is usually a kludgy
mount provided, but the mount *should* be designed to be bolted on to a
braze-on (of course, most bikes for sale here in the US have no suitable
braze-ons for mounting lights). I have fabricated a few mounts but that
should not be necessary. Also, the mounts should not be fragile
plastic. LED taillight manufacturers really do not seem serious about
> I would not want to take my lights of at any destination (and there
> might be 3-5 at one evening). Taking the light off always (and
> especially with the ice cold hands now) has the risk of letting it
> fall to the ground and destroy it. Carrying the battery in a bag with
> other stuff always has the risk of switching it on unintentionally.
> Remounting the lights has the need to readjust the beam angle.
I just leave the light mounted rather than taking it off. I've thus far
never had one stolen.
> I measured run times of different LED-backlight sold in germany. The
> time before the light output starts to drop and the "low batt"
> warning LED lights up was between 6 and 50 hours - all with new
> high-quality alakline cells. If you look around on the streets at
> night you see lots of bikes with battery lights which only emit very
> little light because the batteries are drained.
> Riding my bike is my major mode of transport. I just want to use it
> and don't want to have any kind of avoidable maintenance or
I agree, although I have found battery lights to be reliable and
long-lasting (easily getting a year's use before needing to change
batteries). Someone who rides 4 hours in the dark each day, OTOH, could
have a different result.
Around here, the time of year with many hours of darkness is accompanied
by -10 to -15 C temps and streets covered in ice and snow. I don't ride
much this time of year because it sucks. Much of Europe is more
temperate in winter and year-round riding is much more feasible. My
main riding at night is brevets in the summer and that's easy to plan