mike_smith919

Hi all,

This is my first post, i have been interested in fireworks since i was about 12. I usually buy lots of fireworks for bonfire night, but over the last few months have started experimenting with home made ones.

Now onto my problem, i have been trying to make a rocket since reading the 'Rockets with headers' thread.

I am using wrapping paper wrapped 3-4mm round a 10mm former, 10cm long, rammed with 60:30:10 (hand ground (pestle & Mortar)) + 10% coarser charcoal added after grinding. nozzle is 1.5cm thick and 4mm hole hand drilled 3/4 of the way through the composition and the stick is 6mm dowel 40cm long(The rocket balances behind the nozzle.

I am getting pressure (the smoke and sparks are shooting out the bottom) but its not lifting.

Is this a design flaw or is my propellant no good?

Cheers,

Mike.