Throw potential in SSC P7?

[gyani]

Everyone says that p7's are hard to focus and in hand held flashlights they seem to be, however for racing or automotive applications where large reflectors like spotlight sized can be used, how much throw can be attained from a C bin P7. Would 250-300 yards be realistic?
I would think that since leds are so light and efficient for a racing vehicle like a trophy truck you could have like 6 throw reflector P7's(if it is possible to make them throw) setup with with 6 more p7's setup for flood(100'-200').
Any ideas?

Sorry I posted this in the auto forum too but I dont think it recieves much traffic.

 

[jake25]

Re: Throw potential in Cree P7?

The multi die emitter, P7 is made by the company Seoul Semi Conductors (SSC)

The equivalent multi die emitter from CREE is known as the MC-E

I have aSolarforce L950m with 72mm, 3" head. They are big lights, lots of heat sinking. The P7 LED inside of it is driven hard and it throws A LOT

I don't have a dedicated thrower but the L950m is a beast.

 

[Marduke]

Re: Throw potential in Cree P7?

Sorry I posted this in the auto forum too but I dont think it recieves much traffic.

You might want to check the rules related to "cross posting" on that note...

 

[richardcpf]

Re: Throw potential in Cree P7?

A P7 is a quad emitter led. none of its emitter is centered, so it just CANT throw with a round reflector, which is designed for single, centered emitter.

-6xP7s: 10 watts each, 800 lumens. Lets suposse you have a very efficient heatsinking and driver. This is about 60 watts and 4800 lumens.

-Single 55W HID: ~5000 lumens, ~55watts.

So... why even bother?

 

[gyani]

Re: Throw potential in Cree P7?

O wow i didnt even notice I wrote Cree. I know tis made by SSC. It just slipped my mind. Thanks for the responses!

 

[Gunner12]

Re: Throw potential in Cree P7?

You can change the title by clicking edit in the first post, then clicking switch to advanced mode or something and changing the title.

As with all light sources, a larger and deeper reflector will give you more throw. You can get a 5mm LED to throw 200 yards(really small hotspot) and the same with a Seoul P7 if you have the right size reflector.

 

[gyani]

I changed the title. Yes, I have a DX thrower with a Cree Q2 and the light goes far but it is just too small of a spot for a racing/offroad application.

 

[easilyled]

Re: Throw potential in Cree P7?

A P7 is a quad emitter led. none of its emitter is centered, so it just CANT throw with a round reflector, which is designed for single, centered emitter.

-6xP7s: 10 watts each, 800 lumens. Lets suposse you have a very efficient heatsinking and driver. This is about 60 watts and 4800 lumens.

-Single 55W HID: ~5000 lumens, ~55watts.

So... why even bother?

One of the biggest attractions is never having to replace the led light source.
Another, at least in flashlights, is the immediate start in leds.
A third one is that leds are far more impact resistant.

 

[jzmtl]

Re: Throw potential in Cree P7?

One of the biggest attractions is never having to replace the led light source.
Another, at least in flashlights, is the immediate start in leds.
A third one is that leds are far more impact resistant.

Doesn't really apply in automotives, since that's what the author seems to be interested in. HID lasts pretty damn long, and if I hit something hard enough to blow out bulbs I'd worry about my car first.

 

[easilyled]

Re: Throw potential in Cree P7?

Doesn't really apply in automotives, since that's what the author seems to be interested in. HID lasts pretty damn long, and if I hit something hard enough to blow out bulbs I'd worry about my car first.

True, at the moment HIDs are probably a better choice in automotives.