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Ginseng said:
*Sigh* I really should get that webpage built with all the bulb and battery configurations that have been explored. I suspect that would be most useful to folks.
In answer to your questions b2p:
The 9AA setup is ideal for the WA01185. It's proven, damned bright and has never been reported to instaflash even right off-charger.
Not counting the high current 12AA nimh 50W MR16 mods. This is what it's capable of:
MoMag versus Vector 100W 2MCP spotlight
As for running 9AA+1D why on earth would someone want to do this? The D will pull down the voltage and current because of its internal resistance such that it will add nothing to the performance and likely result in a dimmer output. It might run longer...but it'll be dimmer.
8AA will work but will be at spec by 40% depletion and in uderdrive thereafter.
WA has a handy over/underdrive calculator. Or at least it used to for nearly every bulb. The limits of overdrive for this bulb are pretty well understood, IMO. The reason it is so perfectly suited to the 9AA, and less so the 10AA setup, is a combination of the bulb demand, the initial voltage of the battery pack and the voltage drop in the first few seconds of the run. 9 x 1.4V initial dropping to 9 x 1.25V puts it just off of the razor's edge.
You can get bulbs from WA that'll make close to this output at a higher operating voltage and thus more safely accommodate 10, 11, 12 or more cells. And you'll get more runtime from a pack since the current demand is commonly a bit lower. But then you give up compactness. The WA01185 is my all time favorite "easy" Mag3D mod for the simple reason that several factors are all at their optimal. It's really just about the best you can do in this region of the operational envelope.
Wilkey
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Hehe, hey Ginny,
did you try the CBP1650ma in that 9AA set up yet, hmm, fresh off the charger...'lit bro of the instalflashing badass Aero 1/2D NiMH's? Guess I need to send you a bunch for testing when I get some. Same with the 15min. Energizer 2200ma AA NiMH next month, those might work particularly well in a 9-cell setup.
Oh yes, you really should get that site up and running /ubbthreads/images/graemlins/smile.gif, by then the 3DM*g may have an some IRC's running inside them /ubbthreads/images/graemlins/evilgrin07.gif (if I ever get around to building a homemade 12aa-3d adapter that is. Oh heck, if the M*g plastic could handle 5+amps, we could get 1k lm out of a 2D... "I'm not crazy, I'm just a little bit unwell")