@0123legoman3210 The battery was a 12VDC, 5 amp-hr sealed lead acid battery, capable of producing more than enough current. One thing I did discover after the tests was that the battery had drained quite a bit after the tests. Granted it was not fully charged to begin with, but after I recharged it, the Cat5 tests produced less dark smoke. This might be something I revisit with a freshly charged battery and better quality video.
@0123legoman3210 I don't know how many you could get on the battery I was using, but it would be a lot. Do you mean a battery that can produce 4.5A or one that has a capacity of 4.5Ah? producing 4.5A might not be enough current...
@bnnnboy Thanks i have soveld the problem by using a 12volt battery charge as a power source, it is real good (you can use copper as well as nichrome wire) but you do have to have a mains source :(
@TheBombBros That would work for lower resistance versions, but as is, these would not fire consistently with a 9V battery that is commonly found on altimeters.
every single altimeter i have ever seen in my life (probably more than 50,000) have all run on 28vdc.
as far as not firing consistently...
i have been firing generic 22 gauge speaker wire and nichrome ignitors for more than 30 years with single 9v batteries without any problems whatsoever.
a single 9v will get it red hot within 2-3 seconds and burn anything that is flammable.
2 9v batts will reliably fire through 100 ft of speaker wire
@tapper45 Most altimeters used in sport rocketry use either 9v or 12V batteries. The consistency issue I was mentioning was with regard to sport rocketry cases. In such circumstances, if the igniter doesn't fire, the rocket is destroyed. While a 9V battery could probably fire one of these igniters once or twice, it's nice to get more use out of the battery. Plus, something like this igniter is overkill for igniting the charge of black powder that altimeters typically ignite.
@bnnnboy was that a yes or a no? Is it the regular 9V battery? I've experimented with nichrome wire using 3 or 4 AA batteries. The prob with 9V battery is the resistance
how many amps was your battery?
And how long did it last before it ran out of battery?
SAM
0123legoman3210 1 year ago
@0123legoman3210 The battery was a 12VDC, 5 amp-hr sealed lead acid battery, capable of producing more than enough current. One thing I did discover after the tests was that the battery had drained quite a bit after the tests. Granted it was not fully charged to begin with, but after I recharged it, the Cat5 tests produced less dark smoke. This might be something I revisit with a freshly charged battery and better quality video.
bnnnboy 1 year ago
@bnnnboy so how many fires do you think u would be able to get with one charge?
And would 4.5 amps be enough?
SAM
0123legoman3210 1 year ago
@0123legoman3210 I don't know how many you could get on the battery I was using, but it would be a lot. Do you mean a battery that can produce 4.5A or one that has a capacity of 4.5Ah? producing 4.5A might not be enough current...
bnnnboy 1 year ago
@bnnnboy Thanks i have soveld the problem by using a 12volt battery charge as a power source, it is real good (you can use copper as well as nichrome wire) but you do have to have a mains source :(
extension lead:)
0123legoman3210 1 year ago
dip them in NC laquer mixed with BP to make a slurry and you have ematch. its what i do.
TheBombBros 2 years ago
@TheBombBros That would work for lower resistance versions, but as is, these would not fire consistently with a 9V battery that is commonly found on altimeters.
bnnnboy 1 year ago
@bnnnboy
what kind of altimeter runs on a 9v battery?
every single altimeter i have ever seen in my life (probably more than 50,000) have all run on 28vdc.
as far as not firing consistently...
i have been firing generic 22 gauge speaker wire and nichrome ignitors for more than 30 years with single 9v batteries without any problems whatsoever.
a single 9v will get it red hot within 2-3 seconds and burn anything that is flammable.
2 9v batts will reliably fire through 100 ft of speaker wire
tapper45 1 year ago
@tapper45 Most altimeters used in sport rocketry use either 9v or 12V batteries. The consistency issue I was mentioning was with regard to sport rocketry cases. In such circumstances, if the igniter doesn't fire, the rocket is destroyed. While a 9V battery could probably fire one of these igniters once or twice, it's nice to get more use out of the battery. Plus, something like this igniter is overkill for igniting the charge of black powder that altimeters typically ignite.
bnnnboy 1 year ago
@bnnnboy wow.
i totally overlooked model rocketry appliacations while watching a video about model rocket igniters.
whoops.
i read altimeter and immediately thought aviation (28vdc).
there are so many people on youtube using variations of these to detonate their illegal pipebombs so i was in that frame of mind.
tapper45 1 year ago
@tapper45 When u say 9V u mean the regular 9V batteries that some old radio use?
donperry1 9 months ago
@bnnnboy was that a yes or a no? Is it the regular 9V battery? I've experimented with nichrome wire using 3 or 4 AA batteries. The prob with 9V battery is the resistance
donperry1 9 months ago
@donperry1 Yes, altimeters that fire ematches in rockets are typically standard 9VDC batteries.
bnnnboy 6 months ago