If you're having trouble finding the nitrous cylinders then give them a call or email and ask them for a distributor in your area.
Here's another site to order from. Easywhip.com
For those of you in the U.K., John Aldridge has offered to help you acquire the nitrous cylinders. You can email him here.
Here's some sources of nitrous cylinders by country. If your country is not listed and you know where to get them, please let me know so I can add it to the list.
Here is the Magnetic Apogee Sensor that I just finished. I just flew it in my hybrid rocket and it worked perfectly! The Kit uses surface mount parts and I was able to get it together in under 2 hours. For $30, it's a great kit and I highly recommend it.
Click here for the Official Magnetic Apogee Sensor Web Page.
Click here for a picture of the kit I built (compared to an Adept Altimeter for size).
PerfectFlight Altimeters
Adept
Blacksky
Apogee
EmmanuelAvionics
Milliways Electronics
Missleworks
