To all,
Planning to dabble with electronics and dual-deployment and such in 2008 so have been scouting around for a local source of e-matches to use principally for igniting BP charges for deployment purposes.
A local fireworks place carries ...
1) Mystical e-matches. What have folks heard about them?
2) MJG J-Tek (https://www.electricmatch.com/product.html)
3) He is also willing to sell off his remaining stock of Daveyfires. From the packaging I believe them to be 28BR's.
Questions...
Does anyone recommend any of the above over another? Should I particularly avoid anyone of these? I read on the Net that the J-Tek's are basically a clone of the Daveyfire F's and because of their higher current draw are not the optimum for BP use (using a 9V as a combined power source for both the altimeter and e-matches could cause a significant voltage drop on the altimeter when using the J-Teks that may lead to brown-outs or other anamolies with the altimeter). Thoughts on this?
Also, there is also some question about the Daveyfires he has. While the Daveyfire packaging says "A/N 28 BR" they are all black leads (1 foot long). While I trust the guy knows his product and is confident they are indeed Daveyfires, I'm wondering if they are some other Daveyfire that he just threw into this particular box I looked at (it was not a full box). The only stuff I could find online says Davefire F's are black leads and the white leads are B's and orange leads are BR's. But I don't know if this is a hard and fast rule. Anybody know?
Finally, if they are Daveyfires (those seemed to be one of the chosen ones amongst rocketeers before Daveyfire ceased production) they are undoubtedly a number of years old. Does one have to worry about a shelf life with these things?
Thanks in advance.
... Bill
Planning to dabble with electronics and dual-deployment and such in 2008 so have been scouting around for a local source of e-matches to use principally for igniting BP charges for deployment purposes.
A local fireworks place carries ...
1) Mystical e-matches. What have folks heard about them?
2) MJG J-Tek (https://www.electricmatch.com/product.html)
3) He is also willing to sell off his remaining stock of Daveyfires. From the packaging I believe them to be 28BR's.
Questions...
Does anyone recommend any of the above over another? Should I particularly avoid anyone of these? I read on the Net that the J-Tek's are basically a clone of the Daveyfire F's and because of their higher current draw are not the optimum for BP use (using a 9V as a combined power source for both the altimeter and e-matches could cause a significant voltage drop on the altimeter when using the J-Teks that may lead to brown-outs or other anamolies with the altimeter). Thoughts on this?
Also, there is also some question about the Daveyfires he has. While the Daveyfire packaging says "A/N 28 BR" they are all black leads (1 foot long). While I trust the guy knows his product and is confident they are indeed Daveyfires, I'm wondering if they are some other Daveyfire that he just threw into this particular box I looked at (it was not a full box). The only stuff I could find online says Davefire F's are black leads and the white leads are B's and orange leads are BR's. But I don't know if this is a hard and fast rule. Anybody know?
Finally, if they are Daveyfires (those seemed to be one of the chosen ones amongst rocketeers before Daveyfire ceased production) they are undoubtedly a number of years old. Does one have to worry about a shelf life with these things?
Thanks in advance.
... Bill