Battery / Igniter Combos for staging

[rockosrocket]

Hi Guys,

I am looking to stage a G-G MPR and I was wondering what everyone is using for batteries and igniters for staging?
I need something that will work but will fit into a 38mm EB and no longer than 2-3". I only have access to Aerotech's First Fire igniters so far and I know those take a lot of current to fire so if anyone knows a better igniter that I can get in Canada I am all ears.

Thanks again.

[Adrian A]

Hi Guys,

I am looking to stage a G-G MPR and I was wondering what everyone is using for batteries and igniters for staging?
I need something that will work but will fit into a 38mm EB and no longer than 2-3". I only have access to Aerotech's First Fire igniters so far and I know those take a lot of current to fire so if anyone knows a better igniter that I can get in Canada I am all ears.

Thanks again.

You can use a Raven altimeter with 4 of the 10C 130mAhr lipo batteries from all-battery.com, in series, to light a First Fire. You can get everything you need into a 2" long, 38mm av-bay.

For easier current requirements, Q2G2s dipped in pyrogen like Magnalite are the easiest to set off, and the regular magnalite ignitor kits work, too, with a little higher current. Either of those two would only require 1 130mAhr cell in the av-bay.

[WillMarchant]

If you can get the new Quest Q2G2 igniters up in Canada you should give those a try. They seem to be a "game changer" for lighting small APCP motors. As well as being great for BP motors.

[ScrapDaddy]

Ok first things First. Please note that I have any direct experience with this. I heard you should use a Ni Co battery because of the lower internal resistance. For the igniter I would use the 8" Q2G2 which can be found on the proformance hobbies website



Good luck, and don't forget to turn it on :D

[cjl]

I'd probably go with a dipped Q2G2.

[brianc]

I use a PerfectFlite microTimer, Duracell 9V and Magnelite ML-24's
to stage my WAC Crayon. I haven't actually measured, but it's
close to your 3" x 38mm constraint.



BTW- you can weld with the PF timers, so your FireFire's should be
no problem...

[rockosrocket]

You can use a Raven altimeter with 4 of the 10C 130mAhr lipo batteries from all-battery.com, in series, to light a First Fire. You can get everything you need into a 2" long, 38mm av-bay.

For easier current requirements, Q2G2s dipped in pyrogen like Magnalite are the easiest to set off, and the regular magnalite ignitor kits work, too, with a little higher current. Either of those two would only require 1 130mAhr cell in the av-bay.

Noob question but what does the "10C" or "15C" or whatever mean on the batteries anyways?

Would you recommend a source of said pyrogen and igniter kits?

Thanks.

[TheAviator]

Noob question but what does the "10C" or "15C" or whatever mean on the batteries anyways?

Would you recommend a source of said pyrogen and igniter kits?

Thanks.

I can't recommend a source of pyrogen (never dipped my own igniters) but the "##C" is the number of times the capacity that you can draw in current continuously. For example, a 130mAh 10C battery can source, at most, 1300mA (1.3A) of current continuously. Most of the time, the batteries can also support two times that for short bursts (defined by the manufacturer, typically 15 seconds with "adequate" cool down between bursts.)

[Adrian A]

I can't recommend a source of pyrogen (never dipped my own igniters) but the "##C" is the number of times the capacity that you can draw in current continuously. For example, a 130mAh 10C battery can source, at most, 1300mA (1.3A) of current continuously. Most of the time, the batteries can also support two times that for short bursts (defined by the manufacturer, typically 15 seconds with "adequate" cool down between bursts.)

There's a big difference between the continuous capability (run it until it's discharged) and a 1-second pulse that is typical for an ignitor.
The resistance of the 130mAhr cells is so low that they can be shorted (over 8 Amps) for a second without noticeably warming up. For lithium rechargeable batteries, they need to be charged no higher than 1C rate to preserve battery performance, but they can be discharged up to a rate limited by the temperature rise without significant degradation.