KD G4 adapter to run 5761 in Mag?

[gratewhitehuntr]

I came across this as I was putting my ROP together.

http://www.kaidomain.com/WEBUI/ProductDetail.aspx?TranID=3076

will this fit the 5761?
Can I use it for ... say.... 25 minutes on a ROP modded light without hurting something?

I would really like more lumens.........

 

[mdocod]

I worry about it melting the plastic tower the lamp is mounted on in a mag... other than that it might just work..

I was just noticing that KD has cammed smooth aluminum reflectors for mags for just $10, lenses on the cheap too, along with this little $4 adapter, anyone could get into some magmodding without too much expense... I might just have to order that 2.1A 3.6V bulb set and bi-pin PR base, I think it should work in a 3D mag with NIMH on the stock reflector and stuff.

 

[gratewhitehuntr]

anyone save a link to FM's bi pin adapters?

will these work if I decide to go the Osram route?

ie. 10 1/2 D cells and a super power bulb

BTW, my new ROP isn't any brighter than my WF-500 :mecry:

 

[jimjones3630]

Philips 5761 is a G4 pin should work with adaptor.

5761 is somewhat fussy, if you have a soft start like an NTC, or AW's C or soon to be D drivers with soft start then lower chance of instantflash.

don't recall what if any batt. pak mentioned, except 10 1/2 D which of course is 12v bulbs.

have found in unmodded lights especially if using a bipin adaptor with it's added resistance any 6 cell solution or 2 li-io, or 2xA123 have had no instantflashes. 2xA123 is 6.6v nominal and works well, looks as bright to me as with 2xC li-io.

So, I do just one resistance fix at a time if not using a soft start. with the 5761 resistance is your friend.

I came across this as I was putting my ROP together.

http://www.kaidomain.com/WEBUI/ProductDetail.aspx?TranID=3076

will this fit the 5761?
Can I use it for ... say.... 25 minutes on a ROP modded light without hurting something?

I would really like more lumens.........

 

[LumenHound]

At this point in time, we're not sure. It needs to be tested by those that have them enroute. Time will tell.
Everyone want's to know if the sockets can take the heat.
I'm wondering if they are similar to the G4 sockets that Ginsing showed CPF when a 12 watt socket was as far as you could go with the old plastics.
Wasn't he using fluorescent tube sockets back then?

A 5761 kicks out a boatload of heat when pushed into 10 hour run time territory.

 

[jimjones3630]

LumenHound makes a good point. now that 5761 in 2C Li M@g 61 has taken the place as my daily light I needed to up grade with ceramic insulation around reflector and kiu post and of course has aluminum heat sink.

25 min run on 2 AW's C 3600mah cells would be close end of usually run time.

At this point in time, we're not sure. It needs to be tested by those that have them enroute. Time will tell.
Everyone want's to know if the sockets can take the heat.
.

 

[electromage]

That adapter looks nifty, I have a 5W? halogen in my 4D mag, and it works fine with the stock reflector. I would say that adapter would at least make it cheaper. PR-based halogens are a tad more expensive on their own.

 

[mdocod]

PR-based halogens are a tad more expensive on their own.

I was going to mention that radioshack carried a bulb called (i think) the HPR50, it's a halogen PR based bulb designed to run on about 4 cells (I use it in my Tec-40, no problems so far), If I remember it was only like $2, maybe less.

 

[dlrflyer]

Ok, call me stupid, I understand that this is a bi-pin to PR adaptor, but what is G4? I know that Carley makes a few bi-pins I'd like to try if they would work in this adaptor.

 

[Deep6Osama]

I was going to mention that radioshack carried a bulb called (i think) the HPR50, it's a halogen PR based bulb designed to run on about 4 cells (I use it in my Tec-40, no problems so far), If I remember it was only like $2, maybe less.

Yep HPR50, But it is $3.99. I purchased two last week for my 6V lantern I keep in the trunk. They have a nefty bulb for a 3 cell which is kind of bright for that class of bulb. The bulb is a XPR103 Xenon Lamp 3.6 volt, 800mA cat number 272-1182 the package mentions it is for a snake light.

 

[Icebreak]

They have a nefty bulb for a 3 cell which is kind of bright for that class of bulb. The bulb is a XPR103 Xenon Lamp 3.6 volt, 800mA cat number 272-1182 the package mentions it is for a snake light.

I would suggest purchasing those. They are discontinued and hard to find. Very nice in four cell applications. Shouldn't work but performs very well.

Haven't made it to Sears yet, but did try another RS bulb. The HPR50. It's Halogen, 5.2V, 850mA. Thought it might make a good, or even better contender to the XPR103, but unfortunately, it's not.

On 4 alky D's it's no brighter, and perhaps even the tiniest bit dimmer, so the slight overdrive is not enough to better the XPR on heavy overdrive. The glass blowing techniques used make the top of the bulb very ripply, and with a pointy cut-off in the center. Artifact city in a Mag, with a comet tail-like hotspot. On top of that, it costs $5. Most definitely not an XPR killer.

Apologies for the OT. XPR103 is a jewel.

 

[jimjones3630]

Reading archives noticed two camps maybe more of thought regarding what is the amperage stock mag switch can handle without melting. somewhere along the way I went with kiu socket and heat sink with anything over an 1185.

Recently someone here pointed out they run 5761 with a bipin adaptor in stock switch, wired the adaptor in permanently. Around the bipin, inside the socket, is a insulation material. They also use insulating material in the head and not seen any melting.

Interesting to see if the limit is pushed using bipin sockets with lamps over 6A.

 

[mdocod]

heat generated at the lamp is a factor of total wattage, the 5761 is certainly high current, but only running around 7V in most applications we see here. Heat generated in the electrical path is much more directly related to current alone.

 

[gratewhitehuntr]

well hell, I'm just gonna buy a couple

does anyone know if any of the DX bi-pins are worth a hoot?

here is an example
http://www.dealextreme.com/details.dx/sku.4407

 

[Drawbar]

I just received my adapter and bulbs from Kai today. I shortened the bulb leads..plugged it in the adapter and installed it in a stock 3c mag.

Result was a dimmer spot.

BTW.....I have the 4.7v adapter.

 

[jimjones3630]

Mdocod interesting, reread your post. do you think if current meets increaded resistance will generate more heat? Regardless of how low resistance current alone will generate the majority of total heat given off?

What woul you think is the amount of current???? thinking how to ask the question??? how much current would be too much to hold in a m@glite?

heat generated at the lamp is a factor of total wattage, the 5761 is certainly high current, but only running around 7V in most applications we see here. Heat generated in the electrical path is much more directly related to current alone.

 

[mdocod]

When current meets resistance you get voltage loss, conversion to heat occurs, increasing current across a given amount of resistance will increase voltage loss and increase heat generated. If you double your voltage and cut your current in half, you reduce voltage drop and heat dramatically. In mag-mods we often are looking for lower voltage, higher current lamps because it simplifies the design, allowing for easier battery configurations. But with li-ion and it's many new variations of high current capable cells, I think mag-mods will eventually find their sweet spot in higher voltage configurations where resistance is less of a factor.

But we are dealing with bulbs here, heat is what they do best, (bulbs make heat much better than they make light).... So the heat in the wiring may or may not be the biggest concern.