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Lightbulb altimeter testing

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heada

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When testing with flashbulbs, remember that they produce a good amount of heat with that light. Don't have one next to your hand when it goes off.
 

Dipstick

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I am all set. I have some working bulb testers now, and I also dug out 500 matchheads for making e-matches that I bought at PGI years ago and forgot about. They make a tiny spark without pyrogen, but enough for groundtesting.
 

jimzcatz

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I used to use them when clustering BP motors. I went thru a spell where I bought all the flashcubes I could find on Ebay and spent weeks taking them apart. I have a gallon zip lock bag full. I rarely use them aymore.
 

jrap330

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Ok folks, I feel like the MIT grads that couldn't pass the light bulb test right now... looking for some gentle help 🙂

I bought a string of old incandescent bulbs at a goodwill store. I can't get an individual bulb to light off a battery, but they work on the string...

I have been wiring one side to the tip and the other to the gold screw. With 25 bulbs on a 120v string, I am assuming 4.8 volts needed? My 7.4v LiPo didn't do it, nor did my 12v battery...ok, I am not hooking things up right...but not sure what else to do. Can I clip a piece off the string and use the bulb holder somehow? I welcome your suggestions .
 

Greg Furtman

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I used to use them when clustering BP motors. I went thru a spell where I bought all the flashcubes I could find on Ebay and spent weeks taking them apart. I have a gallon zip lock bag full. I rarely use them aymore.
Ah, flashcubes. I haven't seen that word in ages.
 
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