19 replies to this topic

[dr thrust]

are friends across the pond call them stinger missiles, we know then as spin stabilized rockets, does anybody own the tooling to make them? im interested in the spindle height, width for 1 lb and 3 lb motors

[Rip Rap]

are friends across the pond call them stinger missiles, we know then as spin stabilized rockets, does anybody own the tooling to make them? im interested in the spindle height, width for 1 lb and 3 lb motors

That ever useful tool rocket sketcher! - http://www.flashnet.dk/rts/ . Just change rocket type to stinger & adjust tube ID (1lb = 3/4")

[phildunford]

I made a set up a while ago. Pretty successful, though a bit unpredictable!. Think I made them to specs on Dan William's website. I'll look them out and have a measure.

[maxman]

I got the 1lb Chris, I could measure it tomorrow if you like?? I think the spindle is about 1 1/4" high and 6mm at its widest part (just from memory)

Maxman

[Potassium chlorate]

are friends across the pond call them stinger missiles, we know then as spin stabilized rockets, does anybody own the tooling to make them? im interested in the spindle height, width for 1 lb and 3 lb motors

I have a set for 3/4" stingers, 3" long. What does 1lb motor stand for? That it is capable of lifting 1lb?

The spindle height for 3/4" is exactly 30 mm. The bottom width is 5 mm and the top width is 3 mm.

[dr thrust]

lovely !, many thanx guys very helpful indeed
maxman , yes please,throw a tape measure over your tooling, ta
im going to be cheeky now and ask for a picture or two of your tooling chaps,is there a simple jig for the hole in the side of the casing?

[Potassium chlorate]

I actually don't have a jig but simply fix the tube in a vice and drill on free-hand. Works most of the times.

Though I have yet failed to successfully give the rockets a payload. For some reason they explode.

But I'm still a newbie at rockets.

[martyn]

There is a picture on Wolter pyro - at least I think this is what you mean.
Here

[Rip Rap]

lovely !, many thanx guys very helpful indeed
maxman , yes please,throw a tape measure over your tooling, ta
im going to be cheeky now and ask for a picture or two of your tooling chaps,is there a simple jig for the hole in the side of the casing?

I think you will find this helpful - http://pyrotechnics....kets%20book.pdf (Spin Stabilized Rockets - a definitive study)

[phildunford]

Will measure my tooling tonight & put up a picture, but for the time being, here is a link to Dan Williams' instructions:

Stingers

[maxman]

Ok I measured my spindle and the spindle length is 35mm with the lower part being 6.25mm and the top is 4mm. This is for a 1lb rocket. My big mistake when I first made these was to use too much clay for the nozzle thinking it should be the same ID as the tube 19mm but it only flew the height of a small tree Use about a teaspoon of clay so when rammed it makes about 6mm depth, then use the fastest meal you can get your hands on. If you use TI in it go easy as 1-2% is more than enough as otherwise it slows it down to much. The next thing to know is that when you launch them (I use a 4" nail that is 4mm in diameter) make sure the nail isn't to thin or the spin wobble also slows it down and makes flight eratic.

These things fly vertical on the same principle as a bullet. Mine are to fast for me to film

As for 3lb ones I can't help but do know you're more likely to get a cato so slow the fuel down a bit

Maxman

[phildunford]

This is the spindle I made.

The base is 18mm, spindle height 30mm tapering from 4.5mm to 4mm after the flared part.

[seymour]

I have a set for 3/4" stingers, 3" long. What does 1lb motor stand for? That it is capable of lifting 1lb?

The naming of rockets by seemingly unrelated imperial weights has it's roots in the weight of lead balls of the diameter of the tube, and is best to forget about.

Just remember that 1 lb rockets = 3/4" ID tube, or 19mm, and that 3lb is 1" or 25mm ID tubes, in popular pyro jargon.

To make matters worse, you may come across people from other places that use the word '3lb' ect to mean some other size of rocket, though fortunately this is rare.

[Potassium chlorate]

OK. Once I get my rockets work with a payload, it'd be nice making bigger ones.

[dr thrust]

again a big thank you for everybody's answers, pictures and "walking down to shed to measure"
I'll be able to turn some tooling now, , phil I'm afraid i can only give you 2 out of ten for surface finish on yer spindle

Edited by chris m, 07 May 2010 - 04:45 PM.