auchentochan challenge

Hi Steve- From what I have seen pretty much all the scotch cannisters are the same. I have a beautiful Tormore can that is the same i.d. but a centimeter or so shorter. I tossed the cap & fitted a nosecone that Balsa Machining made for me to a sketch & it worked perfect. I cut a 1″ hole in the bottom of the can with a dremel, bead blasted the bottom & glued the lower centering ring to the outside bottom. The centering rings are 3/16″ birch plywood cut on a cnc mill & the lower ring has a slot for the engine hook. The 24mm motor mount has the engine hook secured with a band about halfway down (I set this up for a 24mm black powder “E” or Hobbyline 24/40 case) & the upper centering ring securing the clip end of the hook and also with a slot for the 1/4″ tubular nylon shock cord. I dropped the engine mount in from the top & through the lower ring. Fins attached by milling slots in the can & a stop edge on the fins. I found that clear coating the can first was helpful as the paper gets damaged by the masking tape 😉 when you paint the fins. If you send me your e-mail I’ll shoot you a photo of the finished rocket. Lar