(I got to this message after I sent my last posting.  Apologies for 
redundancy.) 



I can't tell the bike light industry what to do, but it seems to me that it 
would be in their interest to get together and establish some standards for 
describing the intensity and beam pattern of their products.  I don't care what 
units they use, but if the manufacturers were consistent, they'd be able to 
make credible claims about their products, and we'd be able to make rational 
comparisons. 




----- Original Message ----- 
From: "Charles STRAWSER" <[email protected]> 
To: [email protected], [email protected] 
Sent: Tuesday, November 17, 2009 2:38:28 PM 
Subject: Re: [Bikies] Intelligent news coverage? 




From: http://planetbike.com/page/learn/articles/chooselight/ 





There are many ways to "scientifically" measure and compare light outputs.  
We've found that while measuring our lights using Lumens, Lux or Candle power 
we can have a good comparison from one Planet Bike light to another however 
there are no industry standards for testing light intensity.  This makes 
comparing one brand of lights to another mis-leading and inaccurate.  These 
tests also do not take into consideration the beam pattern of the light you’ll 
find where the light is in front of you is just as important as the overall 
intensity rating.  After all, what good is twice the light if half the light is 
illuminating the tree-tops?  We'd rather point you towards our Light Finder 
<http://planetbike.com/page/learn/lightfinder/>and have you see for yourself 
which light puts out the right amount of light for your cycling needs.  If you 
have any questions about a light, email us and we'll try to help you find the 
light you need. 



http://planetbike.com/page/learn/lightfinder/ 



chuck 






From: [email protected] 
[mailto:[email protected]] On Behalf Of 
[email protected] 
Sent: Tuesday, November 17, 2009 2:32 PM 
To: [email protected] 
Subject: Re: [Bikies] Intelligent news coverage? 



In case anyone out there is listening (Planet Bike, maybe?) what I'd love to 
see on product labels and in reviews of bike lights is how many lumens they 
produce on full charge. Knowing the wattage doesn't help much because 
reflectors or the lack thereof inside the light housing can increase/decrease 
the brightness. And I've never been in a bike shop that let me turn off all the 
store lights just so I could see how bright a given light is in the dark 
conditions in which I would actually use it. Lightbulb manufacturers list 
lumens, why not bike light manufacturers? 

Just a thought. 

Kathryn Kingsbury 
www.kathrynkingsbury.com 
On LinkedIn: www.linkedin.com/in/kathrynkingsbury 

--- On Tue, 11/17/09, Tom Held <[email protected]> wrote: 


From: Tom Held <[email protected]> 
Subject: Re: [Bikies] Intelligent news coverage? 
To: [email protected], [email protected] 
Date: Tuesday, November 17, 2009, 2:23 PM 



Rick did a nice job on that piece, and there's an opportunity to add 
recommendations and comments here http://tinyurl.com/ylos56n 

Tom Held 

-----Original Message----- 
From: [email protected] 
[mailto: [email protected] ] On Behalf Of 
[email protected] 
Sent: Tuesday, November 17, 2009 2:16 PM 
To: [email protected] 
Subject: [Bikies] Intelligent news coverage? 

Hey kids: 

I submit this from the point of view of "this isn't the usual news 
article 
about bicycles that goes something like this: `isn't this the darndest 
thing?!? some people actually get to work by riding a bicycle!' . " 

http://www.jsonline.com/features/health/70199932.html 

On the bright side 
Modern bicycle lights enhance safety, but the best are pricey 
By Rick Barrett of the Journal Sentinel 

Posted: Nov. 16, 2009 

Al 

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