Prometheus

Yes i know.

Of course, sorry... just the first time I read it I thought they'd performed the controlled explosion from a mile safety distance. I see what you mean though, it still seems like an over-reaction if it was just some homemade fireworks.

I've also seen an article stating (rightly or wrongly I don't know) that home made fireworks were the objects found.

According to Sky News his neighbours had been complaing for weeks prior to this, about explosions coming from the block of flats at all hours of the day and night: "sometimes two o'clock in the morning, six o'clock in the morning, half-twelve at night... we found the cartridges on the actual grass".

A mile away ? wow that must have been one big arsed fountain !!

I think they actually meant it was driven to a site a mile away to be destroyed in a controlled explosion. 

I used 60/30/10.

This is my arbour press, it has a 10mm steel plate which allows me to adjust the working height. I've since added a wheel bolt to the pinion so I can use a 1/2 drive torque wrench, I think I set it to 90-100 ft lbs. 

Very Nice rocket, did you ram or press? And did you use a sleeve

Thanks, I used a 1 tonne arbour press and a split pvc sleeve with hose clamps. The propellant was made with airfloat pine charcoal just screen mixed, didn't bother granulating it, I just held a rag around the top of the tube as I inserted the rammer to prevent it all shooting back out. 

Just seen these  http://www.oliverbro.../copy_of_1.html

 

By the way I prefer 4oz core burners as they take much less comp  (about 16 grams) they still lift a nice header and are much lighter in terms of fallout.

 

Rod

I bought a load of the 7 1/2" x 3/4" tubes from oliverbrown but they turned out to be spiral wound, completely useless for core burners, even if they're nozzle-less... these are more expensive: http://www.pyrosuppl...ubes/4520679386 but they are parallel wound and much stronger, I've had good results with 60/30/10: .

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