Adrian, how do you extend the leads on the quest igniters. Do you solder them or do you used some sort of connection? Thanks.
1: Quest Q2G2 ignitor is my favorite
2. Compatibility with your battery/altimeter, reliability, availability, and cost/ease of acquisition. The Quest ignitors are very sensitive, so they work with all batteries used in rocketry, including tiny single-cell Li-poly batteries, fresh A23 12V batteries, 9V, etc. They may be compatible with capacitive-discharge altimeters like the MAWD but I'm not sure about that. They're much more robust than the Estes ignitors, and available for less than $1 each without a LEUP. An easy choice, in my opinion.
3. The smallest switch I know of, very simple and reliable, can be found here: https://www.featherweightaltimeters.com/Av-Bay_Components.php
Aerocon Systems sells screw switches that are even smaller.
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