Help me win a bet.

[Jeritall]

I've bet a neighbor that I have an antique flashlight that will outshine any of his "new" flashlights (no lanterns). I've got an old 8 D cell Lightmaster that I was going to put a xenon lantern bulb in. My problem is the bulb for the light has a screw in base. Is there a 12 volt bulb out there with a screw in base? The hotter, the better. The contest is set for Saturday, what combination of bulb and battery can I use to light this old girl up again?

 

[TigerhawkT3]

I take it this will be a sleeper? :thumbsup:

If you don't mind some soldering, you could try this bulb with D NiMHs. That site doesn't list a bulb life for that model, so I don't know if you could use a full 8 D NiMHs, but you could always just use a dummy cell.

 

[lctorana]

I've bet a neighbor that I have an antique flashlight that will outshine any of his "new" flashlights (no lanterns). I've got an old 8 D cell Lightmaster that I was going to put a xenon lantern bulb in.

Is this 12v or 6v?

I ask because (a) there are more choices at 6v, and (b) the Australian equivalent (the Eveready "Lantern 61") was 8D but 6v.

Assuming by "screw in" you mean E10 or MES (same thing), what's out there?
The only really bright MES bulb I know of is the HME50, which at 5·2v @ 850mA, puts out 90 lumens.

This could be used with 8 rechageables (9.6v) with a 2 - 5 ohm resistor to avoid .

Beyond that, we could think about mounting some other kind of bulb into a broken MES base.

The difficulty is that most MES lamps have been traditionally made for indicator and dial lamp use, where long life rather than candlepower has ben the critical design criteria.

 

[lctorana]

I had forgotten one really bright MES bulb the GH44 from reflectalite.com.

This is 10w at 6v, and puts out 201 lumens.

This could be used with 8 rechageables (9.6v) with a 1.2 ohm resistor or a NTC thermistor to avoid . That would see you to over 350 lumens...

...and be 100% reversible to standard...