The "I bet I could make a rocket out of that!" thread.

[David Schwantz]

Actually, there is no, "no metal" rule. At least in Tripoli, I do not belong to NAR so would have to look there. Tripoli states, more or less, that it is the builders sole discretion on how much metal to use to make it safe and air worthy.
So here you go, the flying Grain bin. Several flights on a AT J800T. Chute cannon out the side, flies soley on base drag.

 

[lakeroadster]

Actually, there is no, "no metal" rule.

NAR MODEL ROCKET SAFETY CODE

1. Materials. I will use only lightweight, non-metal parts for the nose, body, and fins of my rocket.

TRIPOLI Metal In Rocket Construction Statement

• The set of metals that shall meet the “ductile metal” constraint is limited to: - Aluminum alloys - Copper Alloy
• There are two parts of NFPA 1127 (HPR Safety Code) that mentions metal in rockets; 1-3 Definitions, High Power Rocket, (e), and 2-6 Rocket Airframe Materials.

 

[David Schwantz]

Sorry Lake;

https://www.tripoli.org/Portals/1/Documents/Safety Code/Metal in Rocket Construction v2.0.pdf

 

[lakeroadster]

Sorry Lake;

https://www.tripoli.org/Portals/1/Documents/Safety Code/Metal in Rocket Construction v2.0.pdf

Pretty sure that's the same link as I provided, or is it updated or something?

 

[David Schwantz]

Oh, again sorry Lake. I did not see it as a link. After actually clicking on it, it sure is. Sucks getting old and can't see. I have noticed over the years that my RC planes keep getting bigger and bigger, as my rockets now are.

 

[MarsFire]

Heavy Cruiser Prinz Eugen. Just grab a plastic model from the trunk, put some motors and mods on it.

View attachment 449591

You flew Prinz? How well did she fly?

You should do Haruna next. Seriously, after the amount of work that goes into a ship model, I would NEVER have the guts to try that.

Andrew

 

[Daddyisabar]

You flew Prinz? How well did she fly?View attachment 449700

You should do Haruna next. Seriously, after the amount of work that goes into a ship model, I would NEVER have the guts to try that.

Andrew

I never was successful do to ignition issues on two attempts. I tried to use Chinese ematches and they had a tendency to pop and not ignite.

Jet Pack Barbie has always been in that back of my mind. A two or four cluster jet pack, motors split between front and back. Haruka would be a good subject. Or even a Girl und Panzer subject model. Battleship Yamato? Anime and model rocketry are quite a mix, just like the high school girls and tankery!

 

[SkyFire]

Actually, there is no, "no metal" rule. At least in Tripoli, I do not belong to NAR so would have to look there. Tripoli states, more or less, that it is the builders sole discretion on how much metal to use to make it safe and air worthy.
So here you go, the flying Grain bin. Several flights on a AT J800T. Chute cannon out the side, flies soley on base drag.

RAISIN' CAIN and RAISIN' GRAIN!!!
Do you have any launch videos???

 

[David Schwantz]

I do. Please search " How to figure base drag" They will pop up. DAve.

 

[Bowman]

NAR MODEL ROCKET SAFETY CODE

1. Materials. I will use only lightweight, non-metal parts for the nose, body, and fins of my rocket.

TRIPOLI Metal In Rocket Construction Statement

• The set of metals that shall meet the “ductile metal” constraint is limited to: - Aluminum alloys - Copper Alloy
• There are two parts of NFPA 1127 (HPR Safety Code) that mentions metal in rockets; 1-3 Definitions, High Power Rocket, (e), and 2-6 Rocket Airframe Materials.

My statement was meant tongue in cheek.
But I expect that my loosely crumpled aluminum foil nosecone would have been less hazardous than the then standard balsa with screw eye. It would have had a "crumple-zone" effect if it had caught up to my rather nimble brother.
But we always get some good discussions going here.

 

[SkyFire]

I do. Please search " How to figure base drag" They will pop up. DAve.

Thanks. I found the video but access is restricted.

 

[jrap330]

View attachment 449475

I made a rocket out of one of those...kinda...See my avatar. No, it isn't metal. It's all carbon fiber and fiberglass.

Here's the build thread on it. Yes, I am tooting my own horn. Again.

A Disc-Golf course was installed back in 2019 in my town's park (my launch field) and in over 1 year that though never occurred to me.....why you are created.

 

[lakeroadster]

My statement was meant tongue in cheek.
But I expect that my loosely crumpled aluminum foil nosecone would have been less hazardous than the then standard balsa with screw eye. It would have had a "crumple-zone" effect if it had caught up to my rather nimble brother.
But we always get some good discussions going here.

To clear up a misunderstanding, I'm fine with the aluminum foil. I was just clarifying @David Schwantz 's comment. I'd venture to guess that nearly every high power rocket violates the Tripoli code too. I bet you'll find steel fasteners in them.

As long as you're meeting the intent, most reasonable folks will agree that it's ok. But that's another reason why I don't like "club" events or signing on to being a member of a club. Hence my "Custom Title" under my avatar.. I'm a "Give me liberty or give me death" kind of American.

 

[David Schwantz]

Hi Lake, understand fully. But I cannot count the number of times I have been at the field, RC, all by myself, and it is just not the same.

 

[David Schwantz]

Thanks. I found the video but access is restricted.

I'll try to get it posted again. I don't know why it is restricted. Not like you got be 18 to view it.

 

[HiLonesome52]

I work at a dairy processing plant. A few years back we came out with a new 14 oz bottle. First look at them and I thought, these could make a cool looking rocket. Haven't flown it yet, but it "flies" on Open Rocket, waiting for warmer/drier weather to give it a try.

 

[David Schwantz]

Thanks. I found the video but access is restricted.

Hi SkyFire, this is the link again. Try it from this post. It always works for me, and I did not take the vid or load it.

https://drive.google.com/file/d/1MCJpL6JLVMND3AjN_cLDN2RDdKORXAyI/view?pli=1

 

[SkyFire]

Hi SkyFire, this is the link again. Try it from this post. It always works for me, and I did not take the vid or load it.

https://drive.google.com/file/d/1MCJpL6JLVMND3AjN_cLDN2RDdKORXAyI/view?pli=1

Yeah, but when I click on the link this is what I get on my end plus no email received when requesting access;

 

[teepot]

me too

 

[David Schwantz]

Yeah, but when I click on the link this is what I get on my end plus no email received when requesting access;View attachment 449813

Guess I don't know how to fix it.

 

[lakeroadster]

Yeah, but when I click on the link this is what I get on my end plus no email received when requesting access;View attachment 449813

We're All SCROOGLED

 

[David Schwantz]

Would you know what I need to do to allow permission?

 

[jqavins]

I could and did "make a rocket out of that".

 

[MadRocketer]

Hi SkyFire, this is the link again. Try it from this post. It always works for me, and I did not take the vid or load it.

https://drive.google.com/file/d/1MCJpL6JLVMND3AjN_cLDN2RDdKORXAyI/view?pli=1

It looks like it is trapped within your google account. Upon clicking on it my phone asks me to choose one of a couple I have access to. (My kid’s). Can you copy and paste to the thread? Now that I can’t see it I really want to!

 

[David Schwantz]

thought that is what I was doing.

 

[David Schwantz]

I down loaded it and now it say I cannot open an mts flie.

 

[MadRocketer]

Well drat.

 

[jqavins]

I bet you could replicate it by taping a playing card (or a piece of one) to the aft end of each of the fins of an existing rocket...

Baseball cards. Fins are the same as spokes, right?

 

[mooffle]

When all three motors light it flys fine, a little wobble. Has flown on two motors in an arc and deployed before impact. Spine always needs a straightening and retape over melted plastic.

View attachment 449583

How many flights before you are a certified chiropractor?

 

[lakeroadster]

I could and did "make a rocket out of that".

Well done. The more I know... the more I'm impressed.