Magcharger 5761

[littlejohnle]

Hi All,

Ive been reading the articles in these forums, never was interested in flashlights but now i got the bug!!

Well thanks to you guys discussions, i went out and bought a magcharger. My setup is now the MC with the phillips 5761 bulb running on stock batteries, new 4000mah batteries have been ordered . I have done the mica shield mod on the pin pedastal.

I want to know if others have run into problems with this setup?

At the moment im not running the light for more than 5 mins as the mag head gets really hot. Will damage occur if i run it till the batteries dim?

Thoughts and opions are much appreciated guys.

 

[Northern Lights]

should be OK, on 6 volts the 5761 is at OEM spec for the bulb. One of my early posts on teh 5761 suggests this build. I have used 7.2V battery packs on the 5761 Magcharger with standard Mag sockets with no problem, I have used mica shields and just some tamped down ceramic blanket material, each successfully and I run the heck out of it. My pack is 5400 mAh and the bulb draws 5.43 amps.
Brightest Simple Mag Charger Mod, brighter than the 1160

 

[KeyGrip]

I did this to my brother's MagCharger for christmas. He loves it, and has no complaints so far.

 

[littlejohnle]

I feel much better now as i like this setup. This link Brightest Simple Mag Charger Mod, brighter than the 1160 is one of many that i have saved, very useful info.

Im thinking now to overdrive the 5761 bulb at 7.2V via an additional 1/2 d cell and FM tube extender. I dont know if this is the best setup for this bulb but this will allow me to use the stock charging cradle for simplicity.

 

[littlejohnle]

I feel much better now as i like this setup. This link Brightest Simple Mag Charger Mod, brighter than the 1160 is one of many that i have saved, very useful info.

Im thinking now to overdrive the 5761 bulb at 7.2V via an additional 1/2 d cell and FM tube extender. I dont know if this is the best setup for this bulb but this will allow me to use the stock charging cradle for simplicity.

 

[jugg2]

What is the new runtime on this bulb?

 

[littlejohnle]

Run time on new bulb?
I have yet to run my mc longer than 5 mins. Will try it out tonite as im going fishing. I should think i should be getting 20mins of bright light on the stock batteries.

 

[jugg2]

Thanks littlejohne, I guess you're right, you really don't need to run a light that bright for a very long time.

 

[Northern Lights]

Run time on new bulb?
I have yet to run my mc longer than 5 mins. Will try it out tonite as im going fishing. I should think i should be getting 20mins of bright light on the stock batteries.

You will be just fine, I use mine professionally and really do not need the hour burn time that is in it, I could have made it with half the batteries and 30 minutes run without boring it and would never have known the difference. Parallel NiMh battery packs also have some balancing problems covered in other threads and I do experience that. Let us know how this works. Bulb life on over driven 5761 drops to 14 hours and that is really a long time. You do not feel like you are replacing bulbs because you are not.
Fishing you say, Mate? Good luck, brother, click my sig line.
NL

 

[littlejohnle]

Northern Lights,
Excellent catches, im aiming for salmon as well although they will be Australian Salmon. Totally different species to the one you caught and are not even related to salmon. Aparrently the first settlers saw the fish looked very similar to salmon and so gave it that name.

A little bit off topic guys..

 

[TopGunWgHs]

so what output and runtime can expect if i just purchase the Phillips 5761 and run it on the stock battery and charger?

 

[Northern Lights]

so what output and runtime can expect if i just purchase the Phillips 5761 and run it on the stock battery and charger?

http://www.bulbconnection.com/ViewItem/bcrw/itmid/1479/oc/5761/item.html
30 watts, 6 volts, that means the bulb is 30/6=5 amps (pulls 5.43 overdriven at 7.2Vbat)
765 bulb lumens which is .65 x 765= 497 torch lumens, hey 500 lumen rechargeable light with just a bulb switch. Good job!

IIRC the original pack is 2400 mAh, if not the math works the same once you have the correct capacity.
2.4 Ah/ 5 amps = 0.48 hours; .48X60 minutes = 28.8 minutes.

Been there before:
Brightest Simple Mag Charger Mod, brighter than the 1160

Just substitute your correct battery capacity.

 

[littlejohnle]

For those who have concerns about damage to their MC, I have run this bulb at 6V for 20mins, no probs at all. I have done the micra shield mod though.
The head got very hot but can still hold the light.

 

[Northern Lights]

For those who have concerns about damage to their MC, I have run this bulb at 6V for 20mins, no probs at all. I have done the micra shield mod though.
The head got very hot but can still hold the light.

MC have been run with much hotter bulbs, I have been using one on 7.2 volts for a couple of years, that is an hour burn time, granted maybe only twenty minute runs at the most. One problem with the MC is getting soft start devices into it. There are threads on putting an NTC into the MC 5761 when over driven.
You can shield the socket with the mica or ceramic blanket insulation material.
The reflector does not seem to be bothered but you can always pop it out if you are concerned. I have put ceramic material between the steel reflector and plastic frame, before that I have used automotive body patch fiberglass felt. That was very good too.
My Mag Charger reflectors needed to be opened up to accept the 5761. I use a round ball grinding stone on a Dremel. I dress the stone to the diameter I want and go in from the rear. Works on other aluminum reflector too.
Search key words, 5761, mag charger, etc. We are reinventing the wheel here, I seen most of this covered and there are some great threads on it. Does't hurt to go over it again. I was reviewing my subscribed threads and there is a bunch on up grading mag chargers. Fivemega has made some beauties.

 

[JimmyM]

You can add a 6th cell and really drive the 5761 nicely with a 37mm extension found here...
http://www.candlepowerforums.com/vb/showthread.php?t=98251

 

[Northern Lights]

JimmyM introduced us to the ceramic blanket material I mentioned. I have taken it, as it can be handled like cotton, and suffed it into the frame work of the MC reflectors without disassembling the steel reflector out of the frame. I have also packet it down below the MC cam to help keep the heat forward away from the switch.
Insulation for super-powerful incans