I'm working on some models for this year's NRC, and while there are a lot of plans for C Eggloft altitude, none of them specify how to accommodate an altimeter. The Apogee vacufom capsule has too short a shoulder, so I can see doing a) replace the shoulder with an appropriate length of coupler with a bulkhead for use as an altimeter bay, or b) hang the altimeter off the shock cord (not my preferred option).

Just thought I'd ask the experienced competition folks on the forum what you do...

Chris, I noticed that your blog is currently featuring an egglofter build based on the Robin - what mod did you make?

Thanks in advance!

(Note: I would also make this post on contestrockets.org, but find myself unable to post even though I am a member.)

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Bill,

You can talk about egglofters on

https://groups.io/g/contestRoc

You will be able to post and get a response there.

Rule 20.2 covers altimeter rules for NAR competition. http://www.nar.org/wp-content/uploa...6/USMRSC-V3.pdf It says that "The altimeter must be fully enclosed within the rocket body through apogee. " I attach the altimeter to the capsule on the same loop that the recovery system is attached. Deployment is after apogee.

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-Wolfram v. Kiparski
NAR 28643 - TRA 15520
MTMA Section #606 President

I just posted my NARAM egglofter here: https://www.thingiverse.com/thing:3056609

Congrats on your NARAM 2nd place with your printed egglofter.
I think they should bring back F Eggloft for designs like the Enerjet Egg Crate.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !

F Eggloft hasn't gone away.

__________________
-Wolfram v. Kiparski
NAR 28643 - TRA 15520
MTMA Section #606 President

Use a smaller altimeter like the Firefly (I love the P-Nut but its too bulky and a bit heavy compared to others). Put it into the lower half of the egg capsule, then padding, then egg.

Have small vent holes in the lower half of the capsule.

That's what I do.

Also, avoid the Micropeak. It's junk, too unreliable.

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