Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Electronics, Lighting, & Gadgets HRM, GPS, MP3, HID. Whether it's got an acronym or not, here's where you'll find discussions on all sorts of tools, toys and gadgets.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-26-09, 01:22 PM   #126
Unknown Cyclist
Senior Member
 
Join Date: Jul 2008
Location: UK
Bikes:
Posts: 1,757
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ilovebicycling View Post
Looking forward to your photos!
No pressure there then....
Unknown Cyclist is offline   Reply With Quote
Old 03-26-09, 01:44 PM   #127
ilovebicycling
Senior Member
 
Join Date: Jul 2006
Location: Sonoma County, CA
Bikes:
Posts: 76
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
No pressure. No problemo. You are what you are.

Quote:
Originally Posted by Unknown Cyclist View Post
No pressure there then....
ilovebicycling is offline   Reply With Quote
Old 03-26-09, 02:09 PM   #128
pdxsteve
Member
 
Join Date: Jun 2007
Bikes:
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I will try again tonight but my camera is booty. Anyone with access to 18650's and a charger who wants a super bright, non-blinking light should buy this without question. The only thing that sucks is the wait. And finding an attachment point, but seriously, get creative.

1. I don't have enough knowledge of electronics to know if the flashlight is regulated.

2. I have been told by folks on candlepower forums that the "wet finger" test involves taking off the tail cap of a flashlight, wetting a finger and completing the circuit between the body of the flashlight and the bottom of the battery. You are making an electrical connection between the very top of the tail end threads and the battery. I HAVE BEEN TOLD that if the led glows slightly the flashlight is "direct drive." I not sure I could even provide a definition of "direct drive." This and my mt-e p7 both glow slightly when subjected to this test. As the only two flashlight I own, they both pass this test.

3. I can easily see this thing in the daylight from one end of my block (500'+).
pdxsteve is offline   Reply With Quote
Old 03-26-09, 02:15 PM   #129
Unknown Cyclist
Senior Member
 
Join Date: Jul 2008
Location: UK
Bikes:
Posts: 1,757
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Direct Drive = no circuit board.

Some single white LED torches just have a battery a switch and the LED.

Although you can add a resistor, though it's arguable whether this is direct drive or not.

I don't think these Ultrafire WF-501B Philips Luxeon K2 Red LED Flashlights are direct drive.

The load of the LED 'might' be enough to bring the LED voltage to what I measured, but I'm not sure.

I'll run some more tests....

- Just dismantled the torch and it looks like there is a circuit of some kind in there.
Unknown Cyclist is offline   Reply With Quote
Old 03-26-09, 02:58 PM   #130
Bheleu
Senior Member
 
Join Date: Mar 2009
Bikes:
Posts: 130
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you want to change out LEDs, or build your own this place has a lot of options... they even have lenses, and more importantly the specs on various LEDs. The 140lumen red's have about a 1.4A draw. I had debated about putting my own rear light together in one of these. There's plenty of room to have some LEDs for rear placement as well as side placement. The only thing that stopped me was it would cost me a good bit to put a custom unit together (and at that point why not just buy an Denoti, etc).

Last edited by Bheleu; 03-26-09 at 03:06 PM.
Bheleu is offline   Reply With Quote
Old 03-27-09, 07:10 AM   #131
pdxsteve
Member
 
Join Date: Jun 2007
Bikes:
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Bheleu View Post
If you want to change out LEDs, or build your own this place has a lot of options... they even have lenses, and more importantly the specs on various LEDs. The 140lumen red's have about a 1.4A draw. I had debated about putting my own rear light together in one of these. There's plenty of room to have some LEDs for rear placement as well as side placement. The only thing that stopped me was it would cost me a good bit to put a custom unit together (and at that point why not just buy an Denoti, etc).


Don't build your own or buy a DiNotte, just drop 10 bones for the brightest red, non-bike specific light out there.
pdxsteve is offline   Reply With Quote
Old 03-27-09, 07:23 AM   #132
Unknown Cyclist
Senior Member
 
Join Date: Jul 2008
Location: UK
Bikes:
Posts: 1,757
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Bheleu View Post
If you want to change out LEDs, or build your own this place has a lot of options....
Selling only Luxeon LEDs isn't really a lot of options.

Unknown Cyclist is offline   Reply With Quote
Old 03-27-09, 10:00 AM   #133
sknhgy 
Dirt Bomb
Thread Starter
 
sknhgy's Avatar
 
Join Date: Aug 2006
Location: Illinois
Bikes:
Posts: 2,637
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 145 Post(s)
I'm just wondering how you guys got one so fast. I ordered a flashlight kit, emitter, and driver before I found out about this $10 deal. I still haven't received them. I wish I had know about these $10 lights before I ordered my parts.
My order isn't scheduled to arrive until 4-3-09.
__________________
more cops have been killed by donuts than guns in chicago it is a medical fact ask any doctor.
sknhgy is offline   Reply With Quote
Old 03-27-09, 10:06 AM   #134
pdxsteve
Member
 
Join Date: Jun 2007
Bikes:
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I bought mine on a whim before seeing this thread.
pdxsteve is offline   Reply With Quote
Old 03-28-09, 10:31 PM   #135
pdxsteve
Member
 
Join Date: Jun 2007
Bikes:
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Ok, here are some daylight shots.

10 dollar flashlight vs. 20 dollar no name blinky (decent, not superflash decent, but a good comparison) on solid with fresh triple AAA's.
Attached Images
File Type: jpg swing shot bf.jpg (98.7 KB, 92 views)
File Type: jpg hood shot bf.jpg (71.8 KB, 89 views)
pdxsteve is offline   Reply With Quote
Old 03-28-09, 11:38 PM   #136
dougmc
Senior Member
 
dougmc's Avatar
 
Join Date: Jul 2008
Location: Austin, TX
Bikes: Giant OCR2, Bridgestone RB-T, Bike-E, Vision R-40, Novara Safari
Posts: 3,029
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Mine arrived today ...

When I tested the runtime I got about 4.5 hours.

It gets a bit warm. While I did the runtime test, I was also testing one of the DE `900 (really 400) lumen' lights, the two mode one in low light mode, and the other light was still cool hours later, but the red one was rather warm. Not hot, but warm.

(Side note -- the 2 mode 400 lumen light doesn't do PWM to adjust the brightness like the 5 mode one. Instead, it puts about 7 ohms of resistance in the circuit in dim mode, and it doesn't seem to even get warm, but still puts out a lot of light.)

Like the other lights of this type, the battery fits a bit loosely, and so you'll want to put a bit of a shim, perhaps part of a business card, in there to make it fit more snugly and vibrate less.

All in all, the red light is certainly bright enough, though I'd prefer a bit more efficiency to get longer run times. I'd prefer the beam be a bit less focused for a rear light -- a concave lens might be the way to do that. I'd probably want to grind off the `tactical' ridges near the glass to increase the possible viewing angle a bit. Should make a nice main rear light, but I'll make sure I have a backup in case the battery dies and I don't notice.
dougmc is offline   Reply With Quote
Old 03-29-09, 11:35 AM   #137
Unknown Cyclist
Senior Member
 
Join Date: Jul 2008
Location: UK
Bikes:
Posts: 1,757
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by dougmc View Post
I'd prefer the beam be a bit less focused for a rear light -- a concave lens might be the way to do that. I'd probably want to grind off the `tactical' ridges near the glass to increase the possible viewing angle a bit. Should make a nice main rear light, but I'll make sure I have a backup in case the battery dies and I don't notice.
Similar to my thoughts, I'm waiting on a lens from DX to make mine wider angle and I'm considering machining the assault crown down and re-anodising it.

Unknown Cyclist is offline   Reply With Quote
Old 03-29-09, 12:28 PM   #138
AEO
Senior Member
 
AEO's Avatar
 
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
Posts: 12,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
is the lens size actually 28mm in diameter?

I've found a site that carries 2 variations of diffusion lenses.

http://www.flashlightlens.com/str/in...w&ref=ucl_lens
http://www.flashlightlens.com/str/in...=acrylite_lens

still looking for a diverging lens like this one:
http://www.luxeonstar.com/fraen-wide...leds-p-346.php
http://www.luxeonstar.com/fraen-elli...leds-p-307.php

but I'm not sure if that will fit in the ultrafire. the diameter seems to match up decently, but not sure of the depth, room or LED type, other than 'K2' and red K2 will get 40 degree viewing angles.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

Last edited by AEO; 03-29-09 at 12:40 PM.
AEO is offline   Reply With Quote
Old 03-29-09, 02:24 PM   #139
pdxsteve
Member
 
Join Date: Jun 2007
Bikes:
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
the led is a drop in unit, so you could get away with a lens change, but that's about it without further modification.
pdxsteve is offline   Reply With Quote
Old 03-29-09, 03:35 PM   #140
znomit
Zoom zoom zoom zoom bonk
 
znomit's Avatar
 
Join Date: Sep 2006
Location: New Zealand
Bikes: Giant Defy Composite,Trek 1.7c, Specy Hardrock, Nishiki SL1, Jamis Commuter
Posts: 3,317
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
LEDsupply have oval diffusers which will widen the beam in one direction, so you get the wide beam without wasting lumens up and down. Just stick it to the front of the light.
http://www.ledsupply.com/l2-optx-1-825s.php

Cheap and cheerful: You can also use glad press'n'seal to diffuse the beam.
znomit is offline   Reply With Quote
Old 03-29-09, 05:18 PM   #141
dougmc
Senior Member
 
dougmc's Avatar
 
Join Date: Jul 2008
Location: Austin, TX
Bikes: Giant OCR2, Bridgestone RB-T, Bike-E, Vision R-40, Novara Safari
Posts: 3,029
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Unknown Cyclist View Post
Similar to my thoughts, I'm waiting on a lens from DX to make mine wider angle and I'm considering machining the assault crown down and re-anodising it.
I got the 05297 lens with my light just on the chance it might be useful. It wasn't -- it didn't really make the beam wider or narrower. Which I can't really explain, but so be it.
dougmc is offline   Reply With Quote
Old 03-29-09, 05:22 PM   #142
Unknown Cyclist
Senior Member
 
Join Date: Jul 2008
Location: UK
Bikes:
Posts: 1,757
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The original lens is 26.7 mm.
Unknown Cyclist is offline   Reply With Quote
Old 04-01-09, 09:17 AM   #143
AEO
Senior Member
 
AEO's Avatar
 
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
Posts: 12,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
definitely not as bright as a dinotte, at least as far as memory serves.
but beats the heck out of a PB super flash.

note: don't stare into it.


finish quality could be a bit better, like the optics being a bit dusty on the inside, but for what you pay for, it's worth it.

the light is not very uniform and there are distinguishable coronas.

size comparison:
left to right: MTE-P7 assault head, MTE-P7 5-mode, ultrafire WF-1000L MC-E, ultrafire WF-501B luxeon K2, trustfire TR-801
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

Last edited by AEO; 04-01-09 at 05:39 PM.
AEO is offline   Reply With Quote
Old 04-01-09, 05:32 PM   #144
AEO
Senior Member
 
AEO's Avatar
 
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
Posts: 12,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
mounting methods put to practical use:

rubber O-ring method, only works with this sort of velcro strap style where it starts at the top and loops at the bottom. needs to be shimmed to get it to point straight.


the "I have no other practical places to mount it" method.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

Last edited by AEO; 04-01-09 at 05:40 PM.
AEO is offline   Reply With Quote
Old 04-06-09, 07:23 AM   #145
daven1986
Senior Member
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I like the look of this light might try putting one on my rack. Will probably get some superflashes or similar as blinkies.
daven1986 is offline   Reply With Quote
Old 04-06-09, 02:08 PM   #146
AEO
Senior Member
 
AEO's Avatar
 
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
Posts: 12,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by AEO View Post
is the lens size actually 28mm in diameter?

I've found a site that carries 2 variations of diffusion lenses.

http://www.flashlightlens.com/str/in...w&ref=ucl_lens
http://www.flashlightlens.com/str/in...=acrylite_lens

still looking for a diverging lens like this one:
http://www.luxeonstar.com/fraen-wide...leds-p-346.php
http://www.luxeonstar.com/fraen-elli...leds-p-307.php

but I'm not sure if that will fit in the ultrafire. the diameter seems to match up decently, but not sure of the depth, room or LED type, other than 'K2' and red K2 will get 40 degree viewing angles.
btw, these won't fit, unless you remove the reflector, which seems to be soldered to the entire head piece.

your best bet is to just take some 600grit sand paper and frost the lens to make the light coming out less harsh to those directly behind you.

and it has somewhere around a 60 degree viewing angle for the centre spot where you can actually see that it's bright and 160 degrees for spill where you'll see it's red, but not very bright.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

Last edited by AEO; 04-06-09 at 02:24 PM.
AEO is offline   Reply With Quote
Old 04-06-09, 04:40 PM   #147
AEO
Senior Member
 
AEO's Avatar
 
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
Posts: 12,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
btw, I broke it, or it broke on it's own when I disassembled it to clean out the metal shavings and apply grease to the threads.
I'd pay for a $20 light if it was constructed better.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
http://sanfrancisco.ibtimes.com/arti...ger-photos.htm
AEO is offline   Reply With Quote
Old 04-06-09, 05:07 PM   #148
erlebo
Junior Member
 
Join Date: Mar 2007
Bikes:
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by AEO View Post
btw, I broke it, or it broke on it's own when I disassembled it to clean out the metal shavings and apply grease to the threads.
I'd pay for a $20 light if it was constructed better.
That's why I bought two of them. I'm hoping that will be enough to have one working for a while.

I'd buy something like a Fenix if they came in red.
erlebo is offline   Reply With Quote
Old 04-08-09, 01:23 PM   #149
10 Wheels
Galveston County Texas
 
10 Wheels's Avatar
 
Join Date: Nov 2007
Location: In The Wind
Bikes: 2010 Expedition, 03 GTO
Posts: 29,664
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 227 Post(s)
UK riders seen this one?

http://www.wiggle.co.uk/p/cycle/7/Ex...le/5360039445/
__________________
[SIZE=1][B]What I like about Texas[/B]
http://www.youtube.com/watch?v=PGukLuXzH1E

Set F1re To The Ra1n ( NY Night Rain Ride)
http://www.youtube.com/watch?v=W7jfcWEkSrI
10 Wheels is online now   Reply With Quote
Old 04-08-09, 02:22 PM   #150
daven1986
Senior Member
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
ye but you need the front light to run it off, no?
daven1986 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 09:51 AM.