http://www.info-central.org/?article=174 Good quick info on shear pins. Unless you are uding glass BT and Nose cone I would recommend the brass cutters. kwc -------Original Message------- From: Lesnick, Mike Date: 05/06/11 18:21:19 To: roc-chat@xxxxxxxxxxxxx Subject: [roc-chat] How Much Extra BP for Shear Pins? All, One more question about shear pins. If I use 2 or 3 2-56 nylon screws for shear pins, how much extra Black powder do you think it would take to ensure the nose separates from the airframe? Mike Michael Lesnick Axiom Healthcare Group 18135 Santa Lauretta Cir Fountain Valley, CA 92708 714-594-5720 - Office Phone 714-323-5968 - Cell 714-968-7076 - Fax MikeL@xxxxxxxxxxx From: roc-chat-bounce@xxxxxxxxxxxxx [mailto:roc-chat-bounce@xxxxxxxxxxxxx] On Behalf Of MonsieurBoo@xxxxxxx Sent: Friday, May 06, 2011 3:17 AM To: roc-chat@xxxxxxxxxxxxx Subject: [roc-chat] Happy 50th anniversary of Alan Shepard's first Cornwallis, Yorktown, 1781 ;-) Cheers Mark L In a message dated 5/6/2011 1:07:17 A.M. Eastern Daylight Time, ecartis@xxxxxxxxxxxxx writes: Rick "I mean, who *hasn't* beaten the French?" Dickinson