[BProckets] Grams of powder per pound of rocket

[Bill McAlister]

humm ..your remark about 8oz rocketslifting stars got methinking.
How big of a shell could a 1 lb rocket lift? 2" , 3" ? bigger? and how high would said shell lift?
 
your 8oz rockets how are you loading the stars? small canister or shell or just loaded into a header with some type of pasfire to ignight them?

PACO JOHN <pacojohn at swbell.net> wrote:


Hi Bill.  The only size I have total composition weight on is 1 lb. (3/4” bore tube 7.5” long.  This takes 65 grams of composition which is hand rammed on std. coring spindle from Rich Wolter.  Composition used is Potassium Nitrate 64%, airfloat charcoal (pine or grapevine) 18%, Pine charcoal 40 to 60 mesh 10%, Sulfur 8%.  Comp is sieved 4 times dry and not milled. You can also damp the dry mix and force through 18 mesh screen and dry before ramming or pressing to keep down the dust.  In this case the rockets will have somewhat more thrust and could blow your tube.  I only press whistle rockets.  (I ram 2 lb and 4 lb. and don’t make 6 lb)  I make more 8 ounce than any other size as I find it a great size for “flights”.  They can loft a surprising amount of stars.

                                                                          John Reilly. 

 

-----Original Message-----
From: bprockets-bounces at amateurrocketry.com [mailto:bprockets-bounces at amateurrocketry.com] On Behalf Of Bill McAlister
Sent: Thursday, September 30, 2004 12:52 PM
To: bprockets at amateurrocketry.com
Subject: [BProckets] Grams of powder per pound of rocket

 

Anyone know an aprox amount of powder for say a 1 lb rocket as well as a 3 lb and 6 lb?


 


just trying to get a handel on how much powder i will go through and how much paper ill want to order when i order my tubes.


 


oh and i know some people ram their BP rockets but ill be useing a press so how much presure do you press at? I have a Force to presure gauge so i wont be relighing on the presure gage on the bottle jack.


__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 

_______________________________________________
BProckets mailing list
BProckets at amateurrocketry.com
http://exrocketry.net/mailman/listinfo/bprockets

		
---------------------------------
Do you Yahoo!?
New and Improved Yahoo! Mail - 100MB free storage!
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.exrocketry.net/pipermail/bprockets/attachments/20040930/22a9e630/attachment.htm