Re: bike light optics

On 4/5/2024 5:50 AM, Roger Merriman wrote:

Frank Krygowski <frkrygow@sbcglobal.net> wrote:

On 4/4/2024 7:16 PM, Roger Merriman wrote:

I’m really not a good fit for such lights, mainly that I want
lights with
more power with the MTB/Gravel bike can get at least one dynamo lights with
a off road beam shaped but even so with a 3w limit it’s power output is
lacking for that purpose ie 800 lumens at 17mph+ my light kicks out at
least double that with potentially up to 3 times that, as it uses how fast
how much the bars are moving to gauge the light needed.

>
I'm curious: What light is that, and what did it cost?
>

The MTB Dynamo is the Exposure Revo hasn’t changed in at least a decade,
unlike the battery powered models which I assume is related to power output
as with battery powered models the lumens increases slightly incrementally
each year.
It’s about £250 for
https://www.exposure-use.com/Brands/Exposure-Lights/Products/2024-Bike-Range/Dynamo

>
Wow. I've never paid close to that for a bike headlight. Or a car
headlight, motorcycle headlight, etc.