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Please Post VIDEO'S if you got em .

h&k machineguns

By h&k machineguns
in Rocketry

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nater Newbie

nater

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Did the adjustable chuck still get fouled up if there was a bulkhead in the motor?
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ddewees
ddewees

[Video]

ddewees
ddewees

TR rockets from last weekend.   [video=youtube_share;TTT4q0ynF6g]   [video=youtube_share;pkwMlUIQsuo]

ddewees
ddewees

Not rockets, but some mines we built last weekend. Fun stuff...   [Video]https://youtu.be/TIB7nia9P_w   [Video]https://youtu.be/yVK7qRr-7TE

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ollie1016 Newbie

ollie1016

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Not my video, but its rocket related and pretty cool!
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psyco_1322 Newbie

psyco_1322

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Looks good Haunch! I'd say you got them right on the money. What is a corolla header though?

 

Man that sucks for that guys model rocket, sucks when the chute doesn't deploy.

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Maserface Newbie

Maserface

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Looks good Haunch! I'd say you got them right on the money. What is a corolla header though?

 

Man that sucks for that guys model rocket, sucks when the chute doesn't deploy.

 

:) Thanks! - A commercial shell effect called Corolla, I think they also call it something like Golden Flower or something, Ill get a video of one launched normally one of these nights

Edited by Haunchbones
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chrisman Newbie

chrisman

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probably this is not the kind of rocket you that will interest you but I will post the video anw just for the fun of it
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hughesdo Newbie

hughesdo

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I'm a newbie here. I mostly want to read and learn. I've got some know how. I've been studying this art and science for some 25+ years. Mostly rocket candy in the below URL. I hope you enjoy. I have not filmed other activities. I also did a little CGI green screen in about two of the videos, to make them a little funny for your avrage youtuber's. I think most will see that the explosions are fake. I added them in from green screens that I downloaded. I'm a little crazy but not that crazy. Those explosions parts are not real, come on it's kinda of cheesey, I know. please no flames, heehee. The others are real no added sounds. They really sound that powerful taking off! My mic on my camera really captures the sound of thrust good but nothing close to beeing there live. what a rush.

 

https://www.youtube.com/user/DonaldPHughes/videos

 

 

P.S I've been using mighty putty to create my nozzles. Seems to work a little better than cement or durhams rockhard. These rockets are just stump remover (potassium nitrate) and sorbitol 70/30.. and a pinch of rust for extra speed.

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lrumpa Newbie

lrumpa

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Nice to meet you Smelt!

 

I really liked your two stage video... :)

 

I'm a newbie as well. I have been working with PVC for years, primarily rcandy.. My most amusing rocket so far was probably my low pressure motor I used for a bicycle..

I worked on it for a couple of years before I felt it was safe enough for someone to drive it.. The trick was the consistency of thrust and making sure the failure modes were away from the occupant.

 

I had a lot of sensors on that bike, multiple command centers a lead vehicle and a helicopter for emergency as well as aerial footage.

 

I use durhams for my I and J motors and hydrolic for any of my larger motors..

 

You should check out the pvc-only googlegroup, not a lot of action over there these days, but there are some pretty impressive members..

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ddewees Newbie

ddewees

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I need to figure out how to speed up the strobe rate... I have a 1000g batch, and it's much too slow.

 

Maybe I can just use less, or make another batch with only 325 mg/al... and mix the two???

 

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jl88 Newbie

jl88

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Not the fastest rocket, but this is an Rcandy 3lb rocket with a 5% titanium added to the delay charge above the core of the rocket. Seems to give a good tail all through flight. I used to add titanium to the entire fuel, but you can save a lot doing it this way.

 

This is only my 2nd (successful) 3lb sugar rocket. It took a while to get the nozzle diameter right and now I need to dial in the delay for the header. This one went too early... My first 3lb went too late.

 

The shell is only 4 green parlon stars with BP burst charge so that I don't waste too many stars :-)

 

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Bobosan Newbie

Bobosan

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I need to figure out how to speed up the strobe rate... I have a 1000g batch, and it's much too slow.

 

Maybe I can just use less, or make another batch with only 325 mg/al... and mix the two???

 

 

ddewees,

 

That was cool as hell! How did you get it to whistle on the way down? ...or is that video soundtrack magic?

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Maserface Newbie

Maserface

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I need to figure out how to speed up the strobe rate... I have a 1000g batch, and it's much too slow.

 

Maybe I can just use less, or make another batch with only 325 mg/al... and mix the two???

 

 

that baby sounded mean! What tooling and whistle?? And what size mgal in the strobe?

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ddewees Newbie

ddewees

Posted
Posted (edited)

That rocket used the 3lb Super BP tooling from Firesmith Tools.

 

The whistle is:

 

Potassium Perchlorate 64
Potassium Benzoate 32
Copper Oxychloride 2
Petroleum Jelly 5
I used that WECCO stuff from pyrochemsource.
The strobe fuel is:
Ammonium Perchlorate (90-100 micron) 60
Barium Sulfate 15
Magnalium (80-200 mesh) 17
Magnalium (200-325 mesh) 8
Potassium Dichromate 5
Petroleum Jelly 2

 

I probably should have just used the 200-325 sized mesh. I tried another one, this time with a small header, and it planted itself back into ground while it was still strobing. :D The header never went, which was a flash report using that blue alumimum. I'm not sure if the stuff didn't ignite, or if I may have busted the header off with it coming back to the ground while still strobing.

Edited by ddewees
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WonderBoy Newbie

WonderBoy

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Looked like a nice rocket dd! And the green was cool too!

You might also switch to 76-23-1-3 whistle to get it up there higher. The 64-32 mix is pretty slow. How much strobe was pressed over the spindle?

 

jl, a nice plume of Ti there. How'd it pop the header so early?

 

 

WB

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ddewees Newbie

ddewees

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There was strobe fuel the entire length of the third rammer, and about 1/4 inch above the spindle.

 

I will try with hotter whistle... thanks.

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PyroPadawan Newbie

PyroPadawan

Posted
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I already posted videos of 4oz whistle rockets in your previous post but here are some 1lb'ers.

 

1lb Sodium Salicylate

1lb Sodium Salicylate-Sodium Benzoate

1lb Sodium Benzoate

 

The first one is a pure Salicylate rocket (I hate these, too whiny).

Second one is 2 increments of Salicylate with the rest Benzoate.

And the third is a pure Sodium Benzoate rocket. These are my favorite, it's almost like they're spitting at you when they first take off, and Benzoate is a longer burning rocket for the same size.

 

and just like before, here's how I make these:

You're totally right about that Sodium Benzoate rocket. That thing was amazing. Ectremely long burn time. *Nice "little" report at the end of the flight* :)

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