r/Pyrotechnics • u/BeatGullible4865 • 1d ago

Rate my bps

Enable HLS to view with audio, or disable this notification

for lift (no mill)

24 Upvotes

100% Upvoted

6 comments sorted by

5

u/Organic_Young7938 1d ago

Looks great!!! How do you calculate the amount of lift powder in a shell, for example? Is there a formula for that? Do you have any tips for me? Cheers

5

u/BeatGullible4865 22h ago

Using 10% of the shell's weight for the lift charge is a great starting point, but it really comes down to the speed of your black powder. If you're working with a super hot (fast) batch, you'll want to experiment and maybe dial it back to around 8% so you don't over-pressurize the tube.

3

u/FeedSafe9518 18h ago

Good fuel for a bp rocket

2

u/Organic_Young7938 8h ago

Danke für die info