.

[hamheart]

mod please delete

 

[gswitter]

Re: A New R.O.P. Recipe

:poof:

 

[Twinkle-Plank]

Re: A New R.O.P. Recipe

Only one way to see if this works...whos going to try it?

 

[hamheart]

Re: A New R.O.P. Recipe

i already ordered the parts. :duh2::D

 

[fivemega]

Re: A New R.O.P. Recipe

i think i have a new ROP recipe: it consists of a 3D Mag, three Li-Fe-PO4 D cells, a golden shorty tail cap, pelican bulb, a UCL lens, and a smooth Aluminum reflector. Do you think this will work?

Sure it will work for few millisecond.

 

[mikevelarde]

Re: A New R.O.P. Recipe

:poof:

+1

I think 3 LiFePo4 will work better with WA1185 bulb driven to 11+ volts. the ROP bulb can't take the voltage of the 3 LiFePo4. :shakehead

maybe you can use 2 LiFePo4 instead of 3 in a 2D M@g!!:thumbsup:

mikevelarde

 

[mikevelarde]

Re: A New R.O.P. Recipe

:whistle:

:poof:

+1

ROP can't be driven by 3 LiFePo4 unless you use some sort of buck circuit to limit the voltage to the bulb. you may consider use those cell in a mag85 instead.using the same mag 3D. or you can buy a mag 2D and use 2 cell to drive the ROP.

 

[tebore]

Re: A New R.O.P. Recipe

You might want to add an NTC or AW's softstarter for you list.

You MIGHT be able to overdrive the low bulb with some kind of high (relatively) resistance NTC. But the bulb life is gonna suck.

 

[Jay T]

Re: A New R.O.P. Recipe

If you want to use 3 "D" LiFePo4 cells look at the Westinghouse 6V 35W 04424. This bulb was discussed a few years ago in the Mag 35-8 http://www.candlepowerforums.com/vb/showthread.php?t=107571&highlight=04424

I have this setup and doing a bathroom ceiling bounce test with a light meter it is about 75% brighter than my Mag 85 on 9 eneloops.

As for using these batteries with an 1185 I doubt that it would be any fun, these cells are 3.2V vs normal LiIons at 3.7.

 

[97guns]

Re: A New R.O.P. Recipe

do you guys know how well 3 cr123's would hold up with the low bulb?

 

[worldedit]

Re: A New R.O.P. Recipe

I heard a ROP can run on 7 nimh. That should be pretty equal in voltage to 3 LiFepo4. Or is it the lower resistance thats causing the trouble?

 

[tebore]

Re: A New R.O.P. Recipe

I heard a ROP can run on 7 nimh. That should be pretty equal in voltage to 3 LiFepo4. Or is it the lower resistance thats causing the trouble?

You could if you have some sort of softstart. But still your bulb life suffers.

 

[PlayboyJoeShmoe]

Re: A New R.O.P. Recipe

I too believe when you hit the switch on a ROP bulb with three 3+ volt batteries you will see a very bright flash and then :poof:

 

[gswitter]

mod please delete

It was a legitimate question. There's no point editing/deleting it. Someone else is bound to learn something from this thread.

 

[KiwiMark]

Re: A New R.O.P. Recipe

I tried a ROP High with 2 x D Li-ion and :poof: (no resistance fix, about 8V hitting the bulb). I currently run a ROP Low with the same 2 x D Li-ion (protected LiCo) and it is a great torch - good light output, good colour and over 2 hours run time.

Check Lux Luthor's destructive bulb tests:
http://candlepowerforums.com/vb/showthread.php?t=179748
The ROP high can't take too many volts before instaflash:
http://i61.photobucket.com/albums/h75/pike444/bulbs/3854-HROP.jpg
The ROP low can take a bit more:
http://i61.photobucket.com/albums/h75/pike444/bulbs/3854-LROP.jpg

Basically the ROP low will take 1V more before instaflash, pushing over 8V to the ROP High will at best give a short lifespan for the bulb and at worst :poof:, for the ROP Low the same applies for 9V. 3 Li-Fe-PO4 cells may be OK for the ROP Low, but no guarantees on the life of the bulb, on the ROP High I don't think the bulb will survive the first try.

 

[cfromc]

I've run a ROP-hi with two fully charged D-cell L-ion and its right on the edge. Bright but short bulb life.

 

[LuxLuthor]

I love the new topic title. How could you not click on it?

 

[lctorana]

I love the new topic title. How could you not click on it?

.

 

[saabluster]

I love the new topic title. How could you not click on it?

No kidding. It even got me the son of LEDs to come in here.:kiss:

 

[Armed_Forces]

I love the new topic title. How could you not click on it?

+4 :tinfoil: