Письма взяты с Digest for randon@topica.com

Зеленые светодиоды

From: Kent Peterson <peterson@halcyon.com>

On Thu, 7 Feb 2002, Donn King wrote:

> Kent,
>
> Thanks for the link to your article about green LEDs that you
> posted to
> Randon a few days ago.
>
> I figured that LEDs weren't quite ready for primetime cycling
> until I read
> what you had to say about green LEDs. How do you do that
> replacement on the
> Cateye light? How do you get the green LEDs? Is this doable for the
> average reasonably technical cyclist, like myself?

Replacing the LEDs is fairly straight forward if you know which end of soldering iron gets hot and you observe the correct polarity on the LEDs.
You don't need to replace the resistor as the green LEDs draw basically the same current as the white ones, but you get greater lumens/watt. If you follow the link at the end of my article to Don Klipstein's LED
page, he's got loads of information about efficiency, where to get LEDs, etc.
I've got an order in to BG Micro to get a batch of the green LEDs.

I've also updated my original article at

http://www.halcyon.com/peterson/NightLED.html

to include information on the Princeton Tec Impact flashlight. This little
flashlight really surprised me. It uses just a single white LED but it has
very good optics. It puts out a really nice white beam, with more useable
light than what a Cateye manages to put on the road with three LEDs.

Now the logical question is, what would happen if you put a green LED in
the Impact? The answer is, I don't know. Those Princeton Tec's are pretty
darn well put together and I can't bring myself around to ripping one apart and modifying it.

Finally, some of my friends have pointed out that I've got abnormally
good night vision so I'll repeat my caution from the end of my article, if you
don't find LEDs put out enough light for you to be comfortable, go with
other lights. But LED systems are getting better.

I remember in the 1999 PBP how a lot of us Americans were astounded at
the teeny, feeble little lights many of the French riders had. To French eyes,
a Princeton Tec Impact probably looks like a super nova!

Kent Peterson
Issaquah, WA USA

------------------------------

From: Kent Peterson <peterson@halcyon.com>

On Sat, 9 Feb 2002, yoonglee wrote:

> > Hi! I am afraid to interrupt your conversation with your friend but your
> > comment is very interesting. I checked with your web so that I can learn
> > more about your candid opinion. It was fantastic, indeed. Now I will heed
> > your advise and try to purchase the Princeton Tec Impact helmet lamp.
> > Please kindly let me know its market value in the U.S. and where I can get
> > the best deal in the U.S.

Just to clear things up, the Princeton Tec Matrix is the helmet Lamp and
the Impact is a 4AA cell flashlight. The Impact has a more focused beam
and uses a single white LED while the Matrix uses 3 white LEDs. I ride
with both lights, the Matrix on my Helmet and the Impact on my bike.

As to who has the best price in the US, that may fluctuate. Campmor
(www.campmor.com) lists the Matrix for $39.99 and the Impact for $25.99.
REI (www.rei.com) also lists the Matrix for $39.99 but list the Impact at
$27.95. There may be better deals out there, but I've had good results
ordering from either of these two places.

Kent Peterson
Issaquah, WA USA

------------------------------

From: "yoonglee" <yoonglee@livedoor.com>
Subject: green light

>
> Dear Kent:
>
> > Just to clear things up, the Princeton Tec Matrix is the helmet Lamp and
> > the Impact is a 4AA cell flashlight. The Impact has a more focused beam
> > and uses a single white LED while the Matrix uses 3 white LEDs. I ride
> > with both lights, the Matrix on my Helmet and the Impact on my bike.
> >
>
> Thank you for the tip. Here is the last question for you. Could you kindly
> tell me how you have installed the Impact on the bike?
>
> It looks a regular light that you carry with your hand and I wonder how I
> can install on the bike. Just kindly let me know.
>
> Also, how about the combination of Matrix and new Cateye LED lamp?
>
> As you wrote in your wonderful essay, it might work but I would
> like to have
> your candid opinion. I do have a new Cateye LED lamp at home and
> I like its
> design because it is made for the bike.
>
> Sincerely
>
> Yoong Lee
>
> Shimonoseki Japan
>
>

From: Kent Peterson <peterson@halcyon.com>

On Tue, 12 Feb 2002, yoonglee wrote:

> > Thank you for the tip. Here is the last question for you. Could you kindly
> > tell me how you have installed the Impact on the bike?
> >
> > It looks a regular light that you carry with your hand and I wonder how I
> > can install on the bike. Just kindly let me know.

I wound up using a clamp from another handlebar light mount that I had in
my junk pile, but a company called Two Fish makes a little velcro and
rubber piece that is made for holding a flashlight. You could also use a
couple of hose clamps or a pump strap.

> > Also, how about the combination of Matrix and new Cateye LED lamp?

I think the Matrix and the Cateye EL-100 make a nice combination, but the
Matrix and a Cateye EL-100 modified to use Green LEDs is better. For a
white LED light, the Impact flashlight is the best I've seen. Currently, I
find the Impact and the Matrix (both with white LEDs) are quite nice.

Kent Peterson
Issaquah, WA USA

Светоотрадающие пояса

From: "Cary Way" <caryway@hotmail.com>

>Ищу отражающие пояса, типа тех, что многие европейцы использовали в ПБП 1999.

------------------------------

From: Toddbike@aol.com

У меня такой от Sayre Enterprises (http://sayreinc.com). Он называется the reflex sash.

Todd Williams

------------------------------

From: James Kuehn <jtkuehn@earthlink.net>

Посмотрите на http://www.sayreinc.com/reflexsafety

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