NightSun tripple-beam blows NiteRider to bits!!

NightSun tripple-beam blows NiteRider to bits!!

Post by David McGopolo » Sun, 20 Dec 1998 04:00:00


Whoa!  What a light set up!  My firend bought one and it rocks!  That
NiteRider stuff is good, but the big Tri-light job, now that baby
blows away the competition!  

Some guy had one advertised on one of the NG's cheap, that was a deal
man.  

Ride safe,

Big Dave

 
 
 

NightSun tripple-beam blows NiteRider to bits!!

Post by Matt O'Tool » Sun, 20 Dec 1998 04:00:00

Quote:

>Whoa!  What a light set up!  My firend bought one and it rocks!  That
>NiteRider stuff is good, but the big Tri-light job, now that baby
>blows away the competition!

It's true.  First, the Trilight is the only one on the market with a true,
"smart" charger, so the finicky NiMH batteries can last as they should.
Nightrider's "digital" charger is just a timer that puts back what it thinks
has been taken out of the battery, which is not totally reliable.  Second,
having three individual lights is far more efficient than Nightrider's
gimmicky multiple settings.  The low wattage settings on the Nightrider are
very inefficient.  Though Nightsun systems don't look as polished and aren't
as well advertised as Nightriders', they're much better designed for the way
people really ride.

Matt O.

 
 
 

NightSun tripple-beam blows NiteRider to bits!!

Post by Sean Bragsta » Mon, 21 Dec 1998 04:00:00

Wow, sounds great. I haven't seen this new light, but
hopefully it's better than the original nightsun that I
owned, because that thing was a true piece of crap! It
lasted for 6 mos before the light housing broke off of
the mount bracket. I replaced it in 1992 with the
Niterider that I'm still using (original battery, I've
replaced the 12w lamp, that's IT) Good luck, nig

*** Posted from RemarQ - http://www.remarq.com - Discussions Start Here (tm) ***

 
 
 

NightSun tripple-beam blows NiteRider to bits!!

Post by Todd We » Mon, 21 Dec 1998 04:00:00

Quote:

>gimmicky multiple settings.  The low wattage settings on the Nightrider are
>very inefficient.  Though Nightsun systems don't look as polished and aren't

I wouldn't call it very inefficient, just plain-old inefficient.

I'd suspect the PWM on NiteRider's digital lights is logic-level FET
implementation (or maybe a good Darlington).  This means the PWM switch
probably burns between 50 and 250mW, compared to the bulb's 6--15W, so
the power cost of having the switch in place is essentially negligible.

If you don't believe me, ask folks about the lights' actual run times;
they're ususally quite close to what NiteRider quotes---and those run
times decrease like the inverse of the bulb wattage; essentially what
you'd expect from a system that's ~100% efficient in delivering energy
to the bulb.

That having been said, I'm well aware a 15W bulb runs at less than ideal
temperatures when fed 6W, but I'm too lazy to dig up my thermodynamics
text and run through the blackbody analysis.  How much visible-light
radiation efficiency is actually lost for a power drop factor of 2.5?
Based on what I've seen with my DP6, it can't be all that much.  If you
call 15W 100% efficiency, 10W is probably 80%, and 6W around 65% (e.g.
a little under 4W worth of visible light, though it tends to look like
less unless your eyes are dark adapted; hard to get when riding in
traffic)---still within hailing distance of most low-cost switching and
regulating power supplies (and if NR's implementation isn't a budget
version, I don't know what is).

On the other hand, NiteRider's so-called smart charger is a joke, no
matter how much they try to squirm off the hook.

Todd
--
If I wanted spam from idiots, I'd post with an email address an idiot
could use.

 
 
 

NightSun tripple-beam blows NiteRider to bits!!

Post by Mojavetr » Mon, 21 Dec 1998 04:00:00

Hope they've improved their customer service, or do they still have that, "I'm
doing you a big favor by letting you buy my product attitude!"
Scott
 
 
 

NightSun tripple-beam blows NiteRider to bits!!

Post by Mark Bulgie » Mon, 21 Dec 1998 04:00:00

[a bunch of good stuff, thanks Todd] then:

Quote:
> On the other hand, NiteRider's so-called smart charger is a joke, no
> matter how much they try to squirm off the hook.

Agreed it's kinda bogus, but in their defense I've never heard them call it
a "smart" charger.  Their docs always refer to it as a "Plug and forget"
charger as far as I know. (Anyone seen an instance of them calling it a
smart charger?) I isn't exactly plug'n'forget either, but I do believe its
better than the plain old transformer most bike lights come with.

-Satisfied (more or less) NiteRider Digital owner,
Mark Bulgier

 
 
 

NightSun tripple-beam blows NiteRider to bits!!

Post by Chris S. Mayh » Mon, 21 Dec 1998 04:00:00

Quote:

>Hope they've improved their customer service, or do they still have that, "I'm
>doing you a big favor by letting you buy my product attitude!"
>Scott

as an anecdote, not data, they gave me that exact routine when i requested (as
a dealer) product info. the tone of the email was brusque to sarcastic.
however, in some respects they do have a superior product. esp their chargers.
anyone know if they are compatiable with other NiMH batteries?
--
fast#forward# "I'm just gonna get my feet wet, until i drown..."
    .. __o  #
   .. -\<,  #                           -ani difranco
  ..(_)/(_) #
cycling#team#---------------------------------------------------------------
 
 
 

NightSun tripple-beam blows NiteRider to bits!!

Post by Matt O'Tool » Mon, 21 Dec 1998 04:00:00

Quote:

>I'm well aware a 15W bulb runs at less than ideal
>temperatures when fed 6W,

Exactly.

Quote:
>but I'm too lazy to dig up my thermodynamics
>text and run through the blackbody analysis.

I'm sure we'd be really impressed.

Quote:
>How much visible-light
>radiation efficiency is actually lost for a power drop factor of 2.5?
>Based on what I've seen with my DP6, it can't be all that much.  If you
>call 15W 100% efficiency, 10W is probably 80%, and 6W around 65% (e.g.
>a little under 4W worth of visible light, though it tends to look like
>less unless your eyes are dark adapted; hard to get when riding in
>traffic)---still within hailing distance of most low-cost switching and
>regulating power supplies (and if NR's implementation isn't a budget
>version, I don't know what is).

So, for a power draw of 6W, you're getting the light ouptut equivalent of
only a 4W bulb.  It would be much more efficient, in terms of light output
per power used, to use separate 6W, 10W, and 15W bulbs.  That is the premise
of the Trilight's design.

Matt O.

 
 
 

NightSun tripple-beam blows NiteRider to bits!!

Post by Todd We » Tue, 22 Dec 1998 04:00:00

Quote:

>I'm sure we'd be really impressed.

Why?  You've hardly been impressed with much of anything I've ever done,
not that I haven't asked for your help before.

Geeze,

Todd
--
If I wanted spam from idiots, I'd post with an email address an idiot
could use.

 
 
 

NightSun tripple-beam blows NiteRider to bits!!

Post by Todd We » Tue, 22 Dec 1998 04:00:00

Quote:
>Agreed it's kinda bogus, but in their defense I've never heard them call it
>a "smart" charger.  Their docs always refer to it as a "Plug and forget"

Quite true, though I tend fall into the habit of thinking it's a "smart"
charger exactly because it is more intelligent than the more common
totally idiotic chargers.

Perhaps "not quite smart enough to really be useful charger" is a better
name.  As I recall, the DP-12 extreme actually has a true smart charger
and NR may even have refered to it as such, but it's been a while since
I looked.

Todd

--
If I wanted spam from idiots, I'd post with an email address an idiot
could use.