What did you do rocket wise today?

Wayco said:

Just did this with my N2220 Dark Matter. Used Gorilla glue, which isn't so forgiving, but everything went together smoothly, with Sharon's help. Not quite so smooth with Sharon's M1101. All the grains fit, but when we greased up the liner, it got stuck in the casing about 3/4's of the way in. Smacked it back out with an AT seal disk and sanded it down a good bit, went back in smoothly. First time we had one of those nice black CTI liners do that.
Don't know if you have Hobby Lobby up there Adrian, but they sell 1/8" x 36" wooden dowels pretty cheap, I'm using those to hold ignitors in on all my big motors.

So, do you ever think about all the money we spend for that 4.4 second burn?

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On that N3300, the list price is more that I take home in a week, so YES, YES I do... Luckily, I bought it from flyer whose plans changed...

More of the X-Wing build.... it's a journey, not a destination....

Mom the non rocket person opened openrocket today and then asked about X1.4 that 24mm MD project all during dinner. Yeah I was mildly surprised. She’s only attended one launch. Its performance for the size of the rocket remains a curiosity to her.

I am still waiting on parts for it.

I over flew my Apache today. Should have paid more attention to the caution about moonburners.

@Charles_McG Wow! Were you flying this in a 2-stage? What happened?

Guessing from the other thread that was a g65 that unraveled the tube.

jd2cylman said:

On that N3300, the list price is more that I take home in a week, so YES, YES I do... Luckily, I bought it from flyer whose plans changed...

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That is the reason I will likely never fly anything larger than an M motor.

jd2cylman said:

On that N3300, the list price is more that I take home in a week, so YES, YES I do... Luckily, I bought it from flyer whose plans changed...

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I wouldn't be surprised if you got if from two of the biggest enablers on TRF...SpeaknoEvil or pnobile, they have offered some smokin deals from time to time

BDB said:

@Charles_McG Wow! Were you flying this in a 2-stage? What happened?

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Yes. My modded PSII Nike Smoke -> Apache. H133 to G65, meant to be as much impulse as I ever planned for this rocket. I was a bit afraid of the thrust of the other Pro24 6 grain motors, but it turns out I should have been more afraid of the moonburner config. The bent body tube came down that way - it's not from ground impact. I -think- the airframe folded at high coning load, the payload separated and came apart, and the exposure to high speed blew the payload bay apart. My second hypothesis is that the nosecone drag separated at burnout, blew the payload bay apart and folded the body tube. I'm starting to think about that last one more - the phone video I shot seems to show the Apache holding together through the ~2 sec burn. The data from the on-board Quantum is -really- noisy.

Charles_McG said:

I over flew my Apache today. Should have paid more attention to the caution about moonburners.

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My condolences. The picture nearly makes me cry.

Launched rockets yesterday! Uploaded this video from the launch to YouTube today:

rharshberger said:

I wouldn't be surprised if you got if from two of the biggest enablers on TRF...SpeaknoEvil or pnobile, they have offered some smokin deals from time to time

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Actually, you would be incorrect... Our high flying friend Kip had this motor and didn't have the correct case. So, being the cheapska, er, bargain hunter that I am, we made a deal. Am I nervous to fly it? Well, a little...

Figured out how to deal with a snap ring motor retainer that I didn't really want on one sweet-ass Devastator.

jlabrasca said:

Funny, Ijust pulled up the plans for a BT70H Gyroc. It shredded off the pad, and I just disassembled the remains.

Another flier turned a custom nosecone for me, for the Mark II. Trying to decide if I can get it assembled in time for a launch on September 15.

Are you doing a straight up-scale, or did you tweak the dimensions to account for the square-cube penalty?

View attachment 359833

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I am doing a straight upscale. I don't know about the penalty you speak of...I should research that. Thanks for posting that photo of the BT-70H upscale...pretty cool.

rharshberger said:

I wouldn't be surprised if you got if from two of the biggest enablers on TRF...SpeaknoEvil or pnobile, they have offered some smokin deals from time to time

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Speaknoevil is a bad, bad man.

Flyfalcons said:

Speaknoevil is a bad, bad man. View attachment 359975 View attachment 359976

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I think that nose cone is a little big for that rocket... [emoji12]

MoeB said:

I am doing a straight upscale. I don't know about the penalty you speak of...I should research that. Thanks for posting that photo of the BT-70H upscale...pretty cool.

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Have you seen this?

https://forums.rocketshoppe.com/showpost.php?p=218404&postcount=9?

BT80 based, that goes on D motors.

Then, of course, this

https://makezine.com/2016/03/31/hobby-rocketeers-build-amazing-upsized-estes-gyroc/

Today was ejection charge testing day for my L2 rocket. Got everything all dialed in. Now just needs paint and will be ready for Argonia!

Got this ready for clear coat, You can't tell but it's got a retainer built-in before the carbon was pulled. After the clear, It should be around 2.6 oz.

Proprietary supersonic airfoil modification is the more politically correct vague phrase.

That kind of day with rockets.

Sanded and primed the L2 project. Still thinking about colors... hmm

Bonded my 5XL Grain 54mm motor. Filled with Way-Slo-Side making a 3211NS L-877 with 3.66 sec burn time. GETTING READY FOR AIRFEST
Bonding a 5GXL Way-Slo-Side by Cory Brennan, on Flickr

Andrew_ASC said:

Proprietary supersonic airfoil modification is the more politically correct vague phrase.

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Is that the same as "unplanned rapid disassembly"?

Negative.

I think it was yesterday but we'll call it today. I affixed the second rudder on my BT-80H Gyroc. Gettin' there!

Oh, and I just drew up a fin plan for an Estes Goblin-inspired rocket called the Gremlin. The fins are shaped like the profile of the AMC Gremlin auto from the 70s.

jlabrasca said:

Have you seen this?

https://forums.rocketshoppe.com/showpost.php?p=218404&postcount=9?

BT80 based, that goes on D motors.

Then, of course, this

https://makezine.com/2016/03/31/hobby-rocketeers-build-amazing-upsized-estes-gyroc/

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Yeah that HPR version is out there. Too bad it snapped a fin on landing...

jlabrasca said:

Have you seen this?

https://forums.rocketshoppe.com/showpost.php?p=218404&postcount=9?

BT80 based, that goes on D motors.

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Yes...it was that very rocket by Marc McReynolds that inspired my build.

MoeB said:

Yes...it was that very rocket by Marc McReynolds that inspired my build.

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Pictures? From what materials are you making the fins/flaps/rudders?

Not rocketry - but watching my boy on a cross country solo.

I ordered some plate for fins. And pulled this from the jig.