When Semroc was shutting down and clearing inventory, I purchased 3 BNC-70H-AO nose cones. One of them is in an upscale Goblin, one is intended for a BBZ, and the other is for a Bandit.
Originally I was just going to build it with a normal motor tube, but after building the Semroc kit, got to thinking.... I am going to attempt using a 29mm motor tube with a 38mm baffle tube to channel the ejection gases.
Tonight I cut the 29mm & 38mm tubes to length, glued the 29-38 centering rings on along with one of the 29-BT70 rings.
Tomorrow is supposed to be a comfortable 63 degrees so hopefully I can get out in the garage to drill some holes in the tubes, and cut fins.....
I do not work well in the abstract, and when I was able to actually see the space between the tubes, I started to get concerned. A ground test is in order to ensure it will not blow out.
Originally I was just going to build it with a normal motor tube, but after building the Semroc kit, got to thinking.... I am going to attempt using a 29mm motor tube with a 38mm baffle tube to channel the ejection gases.
Tonight I cut the 29mm & 38mm tubes to length, glued the 29-38 centering rings on along with one of the 29-BT70 rings.
Tomorrow is supposed to be a comfortable 63 degrees so hopefully I can get out in the garage to drill some holes in the tubes, and cut fins.....
I do not work well in the abstract, and when I was able to actually see the space between the tubes, I started to get concerned. A ground test is in order to ensure it will not blow out.