What to build with 3 IMR C cells????? brightest!

[bigchelis]

Hi all,

Now that I been putting together a couple of ROP's I want to see how far I can push it with the stock switch and no soft-start.

I have a spare 2D Mag and with the tail cap short spring it fits 3 IMR C cells perfectly. I already have 2.5in Throwmaster and KD reflectors along with UCL lens from lighthound.com and now want the most bulb lumens possible.

My buddy has a 3D that he wants to give me for a 4 IMR C cell build too, but I want to keep the stock mag switch and no soft-start.

All I need is the fivemega kit to be able to use bulbs like WA1185 ect...., so I will be getting this tommorrow.

I looked at Lux most powerfull builds and some of those 100watt monsters seem to have battery packs and aftermarket switches, but I want to build something the average Jose can do:duh2:

Thanks,
Jose

 

[Mjolnir]

The Fivemega 1909 bulb seems to be designed for 3 IMR cells, but you have to buy it with one of fivemega's hosts.

 

[Outdoors Fanatic]

What about the elusive AW 30 watts bulb?

 

[Dioni]

What about the elusive AW 30 watts bulb?

+1 on AW 30 and its 2000lm...

 

[cernobila]

From Luxluthor's data.......

AW 30: 11.5V, 7.6A, 2242 lumens, 0.8 hours

FM 1909: 11.4V, 5.5A, 2260 lumens, 20.0 hours

 

[Dioni]

Wow.. realy the lifetime of AW30 is drastically lower.

 

[KiwiMark]

Wow.. realy the lifetime of AW30 is drastically lower.

At 11.5V - Yes!

Of course it is rated as a 6V bulb so it is being pushed rather hard.

 

[cernobila]

At 11.5V - Yes!

Of course it is rated as a 6V bulb so it is being pushed rather hard.

Exactly.....

 

[bigchelis]

I apologize in advance if this is a dumb question, but since I just purchased the fivemega G4 bin and his FM 1909 for 3 IMR C cell duty and he adviced me on this:

"FM1909 will work with 3x26500 IMRs but resistance fix needed if M*g is the host. "

I don't know how to add resistance to the tail. Is there a thread or link somewhere that I can read up on this?

Thanks,
bigC

 

[gswitter]

"resistance fix" generally refers to removing resistance - specifically at the switch and tail.

 

[^^Nova^^]

Not add resistance, reduce it.

The main 2 ways are to add some copper braid to the tail spring (solder wick works well), providing a path from the top to the bottom, letting the current bypass the spring. You can also add some to the top spring inside the bulb pedestal, I'll see if I can dig up a link. Also some DeOxit inside the contacts of the switch really help.

http://candlepowerforums.com/vb/showthread.php?t=130965
http://homepage.mac.com/rouses/circuits/PhotoAlbum289.html

You probably don't need to go to the trouble of completely hard wiring the switch, just doing the 2 spring mods and deoxit inside the switch contacts will make a big difference.

Cheers,
Nova

 

[^^Nova^^]

Oops, too slow. Good choice on the links though...

Cheers,
Nova

 

[Dioni]

:nana: late

 

[Kestrel]

BigC, I'm very much looking forward to the result of this thread...

 

[fivemega]

Not add resistance, reduce it.
Cheers,
Nova

Sometimes adding resistance (NTC) is necessary too.
For instance driving direct a 5761 with two IMR 26500
I am not recommending this mod but recommending the solution.

 

[bk737]

You are going to love this mod!:devil::devil: I am running the same set-up as you are (2.5 Throwmaster, ) and it is a beautiful beam. Enjoy Jose!

 

[bigchelis]

Thank you all for the help. The links were very informative and helpfull too.

Off I go to Radio Shack to seek out this infamous cooper braided wire:naughty:

bigC

 

[Fulgeo]

Thank you all for the help. The links were very informative and helpfull too.

Off I go to Radio Shack to seek out this infamous cooper braided wire:naughty:

bigC

When your out also grap some lye drain cleaner the gel type to Deanodize the tailcap. Put about 1/4" iside the bottom of the tailcap. It saves you a lot of sanding and the final results looks clean.

 

[Fulgeo]

The Fivemega 1909 bulb seems to be designed for 3 IMR cells, but you have to buy it with one of fivemega's hosts.

The FM1909 is mythical magical beast. My favorite incandescent bulb period. Highly recommended. The easiest way I know to get one is to order a bi-pin adapter from FM and score a bulb at the same time. See this thread. http://www.candlepowerforums.com/vb/showthread.php?t=179891. The bi-pin adapters are an excellent product also.

Happy Mods!

 

[bigchelis]

The FM1909 is mythical magical beast. My favorite incandescent bulb period. Highly recommended. The easiest way I know to get one is to order a bi-pin adapter from FM and score a bulb at the same time. See this thread. http://www.candlepowerforums.com/vb/showthread.php?t=179891. The bi-pin adapters are an excellent product also.

Happy Mods!

Thanks,

That is exactly what I did

Next week I will take some beamshoots to compare the ROP H vs. Fivemega bulb.

I will also try that Drain fluid to remove the anodizing too.

bigC