Show us you diy LED lamp!

[NeezyDeezy]

Hey Ambrose, I have a superflash too. I'm really looking for a light I can use my main battery pack for though. I don't want to have to charge or replace separate batteries. I have a 48V ping, and I just got a dc-dc converter that will convert that to 9V at up to 5.5 amps, which I'm going to use to power a MagicShine up front. So, for the rear, it would be great to find a lamp or bulb that uses red LEDs that would also accept 9V.

Good luck finishing your project. It seems like if I tried to make my own 9v "blinder" it would take me forever and I'd probably mess it up. Yours is looking awesome though.

 

[ambroseliao]

I'm with you on replacing batteries when we have a big one sitting on our bikes. Your idea of using a DC-DC converter is a very good one! I plan to follow your example and wire everything up to one source so that it's easier and less troublesome to keep everything powered.

 

[DISH]

Why not using brute Photons!!!

50Watts! ... ONE LED... 4000lumen max

Make snow melting in front of your ebike!!!

Doc

What? Only 50 watts and only 4000 lumens

Why stop there. Get the 100 watt version with 7000 lumens

They are available on eBay for 199 $US including shipping. Topbright88 is the seller.

SPECIFICATIONS:

* Source Material:InGaN !
* Emitting Colour: 100W WATT HIGH POWER WHITE LED
* LENS Type:Water clear
* Color Temperature: Min:6000K Max:7000K
* Luminous Intensity-MCD: Min: 6400 Lumens Max: 7400 Lumens
* Reverse Voltage:5.0 V
* DC Forward Voltage: Typical: 32 V Max: 36V
* DC Forward Current: Typical: 3000mA Max: 3500mA
* Viewing Angle:160 degree
* Lead Soldering Temp:260°C for 5 seconds
* Intensely Bright
* Size of led: 40mm X 46mm
* led emitter size: 21.5mm X 21.5mm

Viewing Angel:160 Degree

 

[steveo]

Why not using brute Photons!!!

50Watts! ... ONE LED... 4000lumen max

Make snow melting in front of your ebike!!!

Doc

What? Only 50 watts and only 4000 lumens

Why stop there. Get the 100 watt version with 7000 lumens

They are available on eBay for 199 $US including shipping. Topbright88 is the seller.

SPECIFICATIONS:

* Source Material:InGaN !
* Emitting Colour: 100W WATT HIGH POWER WHITE LED
* LENS Type:Water clear
* Color Temperature: Min:6000K Max:7000K
* Luminous Intensity-MCD: Min: 6400 Lumens Max: 7400 Lumens
* Reverse Voltage:5.0 V
* DC Forward Voltage: Typical: 32 V Max: 36V
* DC Forward Current: Typical: 3000mA Max: 3500mA
* Viewing Angle:160 degree
* Lead Soldering Temp:260°C for 5 seconds
* Intensely Bright
* Size of led: 40mm X 46mm
* led emitter size: 21.5mm X 21.5mm

Viewing Angel:160 Degree

OVERKILL!!!

is this a bike light or spot light at this point lol ...

i still think at 15$ the scc ps 900lums bulb is the best choice IMO

-steveo

 

[amberwolf]

With that one, you can enclose it entirely in it's heatsink, because it's bright enough to shine thru the metal.

 

[DISH]

OVERKILL!!!

is this a bike light or spot light at this point lol ...

i still think at 15$ the scc ps 900lums bulb is the best choice IMO

-steveo

My feelings EXACTLY!!! And is the point I was trying to get across many posts ago.

I really don't understand the brighter is better philosophy. For me it's all about efficiency, (lumens per watt) and once I have enough light for the task at hand, making more light is just wasting battery power.

I am more than happy with my single MR-16 240 lumen XLAMP. It only pulls 300 ma at 12 vdc and is more than sufficient (for me anyway) when traveling at 30 to 35 MPH.

 

[julesa]

I am more than happy with my single MR-16 240 lumen XLAMP. It only pulls 300 ma at 12 vdc and is more than sufficient (for me anyway) when traveling at 30 to 35 MPH.

At night I need a lot more than 240 lumens, especially if the road's wet. I guess at least in part it depends on how fast you expect to be riding at night, but I'd prefer something besides available light to be the limiting factor for my max speed.

 

[DISH]

Well for off road riding at night in a black wood forest trail, 1800 lumens at 55 to 60 Kph is good thing to have it's my (2) cents.

OH, I totally agree with that!

I was referring to on road use only and I know the type of road has a lot to do with how effective the light is. Rain makes things worse but I don't ride in the rain either.

Max speed on the roads I ride on is 35 MPH and most of the back roads are limited to 20 or 25 MPH. Go much faster than those speeds and you will get pulled over. Doesn't matter if you are a bicycle, car, truck or whatever. I've had the police follow me when i was doing 28 MPH in a 20 MPH zone.

 

[DISH]

Just ran across this. Probably not that great of a deal but thought I'd pass it on...

1 Watt 70 Lumen White Super Power LED
Item Number : G17334
Price: 4.95 US$

Electronic Goldmine
http://www.goldmine-elec-products.com/prodinfo.asp?number=G17334


They also have a "Star Bright 3 Watt White LED (120 Lumens)"
http://www.goldmine-elec-products.com/prodinfo.asp?number=G17351

 

[DISH]

I did a test last night and the brightest part of the beam of the 3 watt 240 lumen LED lamp that I have is brighter than the headlamps on my truck! HOWEVER, and this is probably where the big difference is, the LED is better focused creating a VERY bright hot spot on the road. Right where the LED is aimed the truck lights are dimmer.

What I notice about the truck headlights is there is light spraying sideways where there is very little light from the LED. The truck headlamp is rated around 1000 to 1500 lumens from what I can gather.

This points out something that could be VERY important depending on what you are using your light for. If you need to see things off to the side, such as off road use, then you probably would benefit from a wider beam lamp and a wider beam lamp is going to need a LOT more lumen output to be bright enough as any light going to the side is not going out the front. The more you spread the beam the less bright a given area will appear. So you can't judge a light by lumen output alone. Beamwidth can be extremely important.

This is probably why I'm having such good luck with the 240 lumen lamp. It's extremely bright out front. The hot spot out front is brighter than most automobile headlights but doesn't put much light out to the sides. The beamwidth is approx. 15 degrees. I have it mounted on a tower on the trike which puts the light ABOVE my head, a considerably different mounting position that a typical bicycle.

I tried the same 3 watt lamp in a 40 degree housing and found it TOO DIM. I needed at least three of those lamps to create the same amount of light pointed where I'm going. But there was a lot of wasted light out to the sides for the type of riding that I do.

What I find also works well is a helmet mounted light in addition to the bike mounted light. That way I have another 240 lumens pointed right where I'm looking.

I guess it all boils down to the type of riding you do, the speed you are traveling, the surface you are riding on, the beanwidth of the lamp, which way the wind is blowing, the phase of the moon, the....

 

[DISH]

I did a test last night .....
NOTE: I deleted this as some of my posts are getting entered TWICE. HELP !!!!

 

[amberwolf]

It's not LED, so I am not posting the whole thing here, but for those looking for lamps here's another option:
http://endless-sphere.com/forums/viewtopic.php?f=2&t=14193&start=0