My new selfmade 5 x P7 Flashlight

Hi,

this will be my new flashlight.





The heatsink and the head are not ready, yet. The 6 x 18650 are connected in series and should give 2,75 * 6 = 16.5 V to 4,2 * 6 = 25 V. This should be enough to drive 5 P7 with a buck driver. Perhaps I 'm going to reduce the current to 2A. In spite of that the flashlight should be still bright enough.
Now I have the problem to find 5 reflectors for my project. They should fit without any problem so that I do not have to modify them. Is there an alternative to 5 McR-27?

Some specs so far:
length: 31 cm in my drawing
weight: about 1,5 kg
diameter body: 6,0 cm

Regards

Packesel

Any (metal) reflector can also be cut down...

What's the diameter inside of the head where the reflectors need to go ?

you could try this with the hole opened up http://www.dealextreme.com/details.dx/sku.18842
who knows what the beam might look like just an idea but i,m liking the design though would be nice to have a torch body that fits the larger men and womens hands cheers DocD
ps may a magnetic switch with twist head been done befor and people could covert to a dive torch to expand your target sails

The head and the heatsink are not ready. The largest available borofloat lens at flashlightlens.com measures 89.05 mm. This would be my limit.
At www.ledil.com I have found a BOOM-S-P7 reflector. It looks quite good. Maybe there is a better solution.

If space is an issue I've heard that the McR20/McR20S reflectors work quite well with P7s.

The reflector holes would need to be enlarged and the beam would be more of flood than throw.

OK, I have modified the head and added 5 Boom-S P7 reflectors.










The length of the Boom-reflectors is 14.34 mm. In the last picture you can see that the whole heatsink can be adjusted a little bit. It can be screwed back for about 10 mm. So any reflector up to 24 mm should fit. The diameter inside the head is nearly 80 mm. 5 McR20 should not be a problem any more.
But 5 McR27 will never fit. The head is to narrow. 4 could fit if I optimize the head a little more.

The DX-reflector is not what I 'm looking for. It is designed for 5 cree xre, not 5 P7 or 5 MCE. IMO it cannot handle the heat successfully.
I do not know much about diving. So this would only be a simple flashlight.

It looks very nice. If it were a waterproof (to 100m) dive light, I'd sure be interested in getting one!

The DX-reflector is not what I 'm looking for. It is designed for 5 cree xre, not 5 P7 or 5 MCE. IMO it cannot handle the heat successfully

Click to expand...

.

Boom reflectors are plastic, reflectors purpose is not to conduct heat.
(except in P60 modules )
Juha

It looks very nice. If it were a waterproof (to 100m) dive light, I'd sure be interested in getting one!

Click to expand...

I do not know much about dive lights. Sorry.

Boom reflectors are plastic, reflectors purpose is not to conduct heat.
(except in P60 modules )

Click to expand...

I agree, but look at the heatsink. It is to small for 5 P7. The weight of my heatsink is about 0,5 kg (=1,3 lb =17,6 oz). This is more than the whole UltraFire MCU WF-1000L (12,24 oz)
http://www.dealextreme.com/details.dx/sku.18071
The reflector or heatsink your are talking about only has 2,5 oz (=0,2 lb =0,07 kg). This is a big difference.

Hi

You get 5 mirrors in a smaller space (or larger mirrors in the same space) if you arrange them on a circle not a cross

eg.


Not P7s but you get the idea ! Of course you don't have a central LED anymore so take your pick.

Cheers
Pete

Pete, you are right! I have tested it with the biggest available Borofloat lens I know and 5 RGB-X lenses (http://www.ledil.fi/index.php?page=mc-e_leds). I had to enlarge the head but these big lenses would fit.



Thanks for your advice. This way I can build everything from a flood to a throw monster. I only need one host.

Regards

Packesel