Mile High build thread

T-Rex · Jan 18, 2013

I envision many smashed bottles if I tried it. My hat's off to you Ari!

iter · Jan 18, 2013

These are 15 years old. I think I'm growing less patient as I grow older. I can hardly imagine building one now.

Ari.

qquake2k · Jan 18, 2013

iter said:
These are 15 years old. I think I'm growing less patient as I grow older. I can hardly imagine building one now.

Ari.

It's cool that you have the photos.

qquake2k · Jan 18, 2013

I made some brackets out of brass to attach the charge canisters to. I don't want them flopping around during flight.

qquake2k · Jan 18, 2013

I also took the time to seal the holes with silicone.

iter · Jan 18, 2013

Jim, I'm confused about your wiring. You have screw terminals but also JST connectors. On my Onyx, I have wires from screw terminals go directly into the altimeter. I'm unclear on the role JSTs play in your setup.

Ari.

qquake2k · Jan 18, 2013

iter said:
Jim, I'm confused about your wiring. You have screw terminals but also JST connectors. On my Onyx, I have wires from screw terminals go directly into the altimeter. I'm unclear on the role JSTs play in your setup.

Ari.

The connectors are so I can disconnect the terminals on the bulkheads to be able to take the sled out of the av-bay. I'll need to do that to change the battery, etc. I'll also use them to connect the charges for ground testing.

iter · Jan 18, 2013

Ah! I understand now. On my Onyx, I simply make the wires longer so I can take out the bulkheads.

Ari.

qquake2k · Jan 18, 2013

iter said:
Ah! I understand now. On my Onyx, I simply make the wires longer so I can take out the bulkheads.

Ari.

I like to make things more complicated than they need to be. :tongue:

jsargevt · Jan 18, 2013

qquake2k said:
I like to make things more complicated than they need to be. :tongue:

This seems to be common among us rocketeers!

qquake2k · Jan 18, 2013

jsargevt said:
This seems to be common among us rocketeers!

Plus, I like the cool factor of the connectors. I love hardware.

cwbullet · Jan 18, 2013

qquake2k said:
I like to make things more complicated than they need to be. :tongue:

That is definitely true. Most of us try and try to make things more complicated.

qquake2k · Jan 19, 2013

Ready for ground testing.

Handeman · Jan 19, 2013

qquake2k said:
I made some brackets out of brass to attach the charge canisters to. I don't want them flopping around during flight.

Why not?

Isn't the point of using canisters like that so you can put them in the other end of the BT from the Alt-bay? They don't actually "flop" around BTW. If you want them attached to the alt-bay bulkhead, why not use a powder well/holder that's permenately attached to the bulkhead instead of having to buy new canisters every flight?

qquake2k · Jan 19, 2013

I got the aft shock cord done. I sure hope that Kevlar holds up, it feels awfully flimsy to me. But then, the drogue is only 15". It shouldn't put much of a shock on the Kevlar when it opens.

qquake2k · Jan 19, 2013

I'm going to call my first ground test a success. It was only 0.5 gram of BP, but it was more energetic than I expected. If the bundle of Kevlar hadn't caught on the box, I think it would have stretched it all the way out.

[YOUTUBE]tFywz2DlqZg[/YOUTUBE]

qquake2k · Jan 19, 2013

The Kevlar also caught on the Coastlock swivel. Needless to say, I won't be using it.

qquake2k · Jan 20, 2013

I just didn't feel comfortable with the thin Kevlar. It felt flimsy to me. So I figured out a way to use the 1/4" Kevlar. I feel more confident about its strength.

qquake2k · Jan 20, 2013

I got the shear pins installed. I'm using 2-56 nylon screws. I drilled the holes with a 1/16" bit, and threaded them with a 2-56 tap. I didn't put in brass plates, but I'm hoping the Blue Tube will be tough enough to not need them.

qquake2k · Jan 20, 2013

I put alignment marks on the body tube and the av-bay.

iter · Jan 20, 2013

Looking good! Waiting to spot for you at Snow Ranch!

Ari.

gdjsky01 · Jan 20, 2013

A few wraps of tape and the hook won't catch on anything.

qquake2k · Jan 20, 2013

Ground tested the forward section, with shear pins. I used 0.7 grams of BP this time.

qquake2k · Jan 20, 2013

It broke the shear pins cleanly and stretched out the shock cord. I'd say that was successful!

[YOUTUBE]6UL5TslJpy8[/YOUTUBE]

qquake2k · Jan 20, 2013

The chute got singed a little bit, I'm going to have to pack it more carefully next time. The tip of the nose cone dug into the soft dirt a little. I'd say it was moving pretty good.

qquake2k · Jan 20, 2013

Handeman said:
Why not?

Isn't the point of using canisters like that so you can put them in the other end of the BT from the Alt-bay? They don't actually "flop" around BTW. If you want them attached to the alt-bay bulkhead, why not use a powder well/holder that's permenately attached to the bulkhead instead of having to buy new canisters every flight?

Couple of reasons I chose to use centrifuge tubes. One, there's not much room left on the av-bay bulkheads. And two, I can make them up ahead of time.

qquake2k · Jan 21, 2013

iter said:
Looking good! Waiting to spot for you at Snow Ranch!

Ari.

Thanks Ari. The more eyes on it the better! I'm planning on sending it up to around 3000 ft at Snow Ranch. On either a CTI I180 Skid or I212 Smoky.

iter · Jan 21, 2013

qquake2k said:
Thanks Ari. The more eyes on it the better! I'm planning on sending it up to around 3000 ft at Snow Ranch. On either a CTI I180 Skid or I212 Smoky.

Nice! I like skidmarks.

Ari.

qquake2k · Jan 22, 2013

Boy, Open Rocket sure was wrong about the weight. I weighed Milestone last night, and it weighs 63 oz without the motor, a full 13 oz more than what OR said! But I should still be able to hit a mile with a CTI J400SS or an AT J350W. For the 3000 ft first flight, though, I'll need something bigger than the CTI I212.

iter · Jan 22, 2013

Or a different nose cone.

Ari.

Mile High build thread

Help Support The Rocketry Forum:

Ordinary Average Guy

HPR Glider Driver

Captain Low-N-Slow

Captain Low-N-Slow

Captain Low-N-Slow

HPR Glider Driver

Captain Low-N-Slow

HPR Glider Driver

Captain Low-N-Slow

Well-Known Member

Captain Low-N-Slow

Obsessed with Rocketry

Captain Low-N-Slow

Well-Known Member

Captain Low-N-Slow

Captain Low-N-Slow

Captain Low-N-Slow

Captain Low-N-Slow

Captain Low-N-Slow

Captain Low-N-Slow

HPR Glider Driver

Kim's Rocketeer

Captain Low-N-Slow

Captain Low-N-Slow

Captain Low-N-Slow

Captain Low-N-Slow

Captain Low-N-Slow

HPR Glider Driver

Captain Low-N-Slow

HPR Glider Driver

Similar threads

Join the conversation!

Join today and get all the highlights of this community direct to your inbox. It's FREE!