Hi, I'm the guy that is never off weekends. I am stuck with G motors.
My progression is agonizingly slow.

All the great online help has allowed me to decide on a altimeter (RRC2x)
More for ejection and air start than altitude, and more for future rockets
if I ever can get a level.

Reading and experimenting all I can. I have come upon a question.

What is the lowest altitude the RRC2x will read?

Most if not all my flights are under 2000'

Thanks

My understanding of the RRC2 is that once the liftoff is detected, the altimeter is armed - which I think is around 300 feet AGL or so. So, 2000' is not a problem. So if the altimeter is set to deploy at apogee and the main at say 500' and your rocket only goes to 400', the apogee will deploy and 1 second later the main...

I would recomend you get the RRC2X 25K version with one of the Missile Works Switches and battery holders.

The Altimeter must go to a minimum of 300Ft AGL before it will arm. Its minimum Main deployment is 300ft AGL. Via settings of the dip switches with options of 300, 500, 800, and 1000 ft for the 25Kmsl version. Max capable altitude is the 25K subtracting the elevation of the location that you are at above sea level. So for our North site you would come up with an altimeter thats good from 300ft to about 18.5k. Great choice of an altimeter. Its a really reliable piece. Ive owned several and swear by their reliability. I have flown them to reasonable altitudes around 15K and had them work perfect and as low as 1000ft. I trust the product enough that I am willing to risk my L3 cert to it as well as the price of the rocket about a $2,800 dollars. so I do think they do a good job.

I am using 2 of them on my latest rocket, and I definitely trust them. Missile works products are very nice, and I have been extremely impressed with them with every use so far. As has been stated, 300' is the minimum for them to arm. Anything above that, and you're fine.

I've got the 40k version (yeah, for me, right... :)), and it's going into my L3, too (the first-flight tested electronics) after Oktoberfest. I need it, can't do without it.

Ive got 3 of the 40K units myself and someday will hope to push even ebyond those if all goes as my plans are for a someday venture. I also have a 25K version as well. will probably give it to my daughter for her use.. but Over time Ive probably owned 12 to 14 of em.. I got my first ever venture away from them here recently with an ARTS.. Mainly for data as well as just to have a different unit.. If Jims Mpacs were out I would have opted for it instead.

OK. I am getting (RRC2X a switch and a battery holder.from Missle Works)

Best wire. To wire this togeather I was considering using
some wire I found for a Train Hobbyist.

What would be suggested?

Thanks Mike

I use either 22 or 24 gauge stranded wire. It's flexible and less prone to breaking after numerous bends. You can fold and tin the ends for a solid connection to the terminal blocks on the RRC2. Run the J1 and J2 wires through the bulk head and connect to terminal blocks on the outside of the bulk heads. Seal the holes with epoxy to make an air tight seal inside the av bay. For a connection to switch leads, use heat shrink tube after you solder the wires. This will strengthen the connection and will cover up the solder joints.

At Oktoberfest, I noticed that my 40k MWC altimeter was giving me two beeps instead of its usual three, which means that channel 2 is go, but channel 1 is not. I only needed channel 2 for main deploy, so she flew. The fact that I obliterated my drogue and forced the main out at apogee is... kinda irrelevant. Embarrassing, but irrelevant. The main charge went off, so my trusted MWC altimeter did its job. However, when I do the output test, both channels signal they're fine, full continuity and ready to go. It's just that the beeps after initialization don't indicate that. It's still within its year warranty. Has anyone else had this problem? If so, advise. My wife got me this one for Christmas last year. So, I can still send it back to Jim. I'm going to verify this before I do though. Just need opinions. Thanks ahead of time! 🙂