Mag Resistance Mods for Switch/Tail Spring

[Agent WD-40]

So I have been reading up on all of the ways to lower resistance in a MagLite (modding the switch, modding the tail spring, using a golden shorty spring, etc). I have one of Elektro Lumens 3x P7 drop ins (wired in series running with Fivemega's 9AA to 3D adapter) on the way. I figure it will pull ~2.5 amps give or take 500 mA.

I want to knock down the resistance in my flashlight as much as possible but I would prefer to purchase improved parts instead of modding the stock Mag parts. I see I can get a Golden Shorty Tail spring from KD instead of doing andrewwynn's tail spring wire mod.

Is there a source I can buy a lower resistance Mag switch assembly from? I haven't come acorss a source in my searcing.

Is this overkill for a setup pulling ~2.5 amps?

I appreciate the help.

 

[BSBG]

I don't know of anyone selling a modded switch as a turn key part. It is not very hard to to, so why not just give it a go? If you mess it up, you can always buy another host, and can sometimes fond stock switches for sale here.

The tail spring mod takes all of about 10 seconds and costs nothing if you have a piece of wire hanging around. Sometimes I don't bother to solder it .

 

[LukeA]

I don't know of anyone selling a modded switch as a turn key part. It is not very hard to to, so why not just give it a go? If you mess it up, you can always buy another host, and can sometimes fond stock switches for sale here.

The tail spring mod takes all of about 10 seconds and costs nothing if you have a piece of wire hanging around. Sometimes I don't bother to solder it .

...and it's pretty unlikely to damage the switch while modding it.


+1 to not needing to solder in the wire.

 

[Agent WD-40]

Thanks for the input. I guess I'll just have to drag out the soldering iron and get-r-done.

Is this overkill for a setup 3x P7 setup pulling ~2.5 amps?

 

[Justin Case]

I would leave it alone. It takes very little change in Vf to go from 2.5A to 2.8A (about 0.05V). At that current, you are talking about a change in resistance of about R= V/I ~ 0.02 ohms. Muck around and "improve" the parasitic resistance too much, and you might find yourself pulling 3.8A instead of 2.8A.

 

[LuxLuthor]

http://homepage.mac.com/rouses/circuits/PhotoAlbum289.html
http://homepage.mac.com/rouses/circuits/PhotoAlbum288.html
http://homepage.mac.com/rouses/circuits/PhotoAlbum373.html