Skyrocket with cannister heading
Posted 23 June 2007 - 08:42 PM
this one has a stiff 1/8 (3mm) wall thickness. You can use thinner ones but you will have to paste them more to get a good break. Cut a length of tube 3" (75mm) long and then mark a line around it 3/8" (9mm) from one end, Doesn't matter which . Then trace the ID of the tube onto some stiff poster board or cardboard.
Cut out the circles to make the end discs.
Now take your scissors and cut small triangles down to the line on the tube
Bend the tabs in and out to make them flexible.
Now take one end disc and push it down 1/8' (3mm) below the tabs.
Posted 23 June 2007 - 10:19 PM
This forms a very stiff end cap.
Now take The other end disc and center one end of your rocket motor on it and trace the OD on it.
Now cut the center out using a razor blade or x-acto knife to make a cardboard washer.
Press the washer onto the top end of the motor and hot glue it.
Now load up your shell with whatever you have.This one gets TT stars with some white leaf fuse.
Press the rocket motor firmly into the shell.
Now make another cardboard washer tracing the OD of the shell casing and the OD of the rocket motor.
Cover this with hot glue
And slide the washer on and press it firmly until the glue sets.
Here is the unpasted rocket
I paste the header using kraft paper with stars.
Here is the rocket with pasted header
Press the kraft paper in at the top and bottom to form a crimp.
I spike the header using cheap garden twine.
And lastley glue on the stick
here is the finished rocket
Posted 24 June 2007 - 02:46 AM
The only thing I could think of, is the lower end of the cannister shell. Is it strong enough?
My suggestion is that you could try the sam split 'n fold method as used on the upper cap, if it breaks uneaven.
But as said, looks very good!
Posted 24 June 2007 - 08:07 AM
Posted 24 June 2007 - 11:11 AM
Posted 24 June 2007 - 11:42 AM
No Fight Fire, the end plug isn't wood. I use a product called Durhams Rock Hard Water Putty. It's a powder like plaster. I take a small amount of the powder, mix it with a few drops of water to form a thick putty then, just using my fingers, I press the putty into the space at the top of the tube above the propellant to form the plug. Then I dip my finger tip in water and rub it over the top to smooth the putty out. The stuff dries quickly, you can drill your pass fire hole after 45 minutes. I like it because it doesn't crumble when you drill it and I haven't had any problems with blow outs. Only drawback is it takes a bit longer than just ramming kitty litter but I'm in no big hurry anyway . Thanks for the feedback! (sorry about the double post).
Nice looking rocket, clean construction. Just wondering in the 12'th picture showing the passfire hole are you using a wooden endplug?
Posted 23 April 2011 - 03:48 PM
What did you use for break? In the snap it just looks like riced BP--but is it spiked with a little flash?
This thread's nearly four years old so I hope someone's still monitoring it.
Thanx for the attention,
Posted 23 April 2011 - 05:41 PM
The sky is my canvas, and I have 2,113 pounds of powdered paint in the workshop.
Posted 23 April 2011 - 06:31 PM
Posted 24 April 2011 - 12:11 PM
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