Norad ProMaxx before modification

This kit was me first HPR build.  I followed t' LOC/Precision instructions t' t' T although with trepidation regardin' t' recovery set-up.  Without any experience beyond t' old "Estes glue the shock cord t' the inside o' t' airframe" I went ahead and "glued t' shock cord t' t' inside o' t' airframe".  I finished it in February '13 and after two flights includin' a successful Cert 1 launch I decided t' modify t' configuation.  I decided t' do an anti-zipper design after reading an article in t' NARRRRR Member Guidebook.  In addition, I wanted t' know how high t' thin' was actually flying, and not just assume t' Open Rocket simulations were correct, so I ordered a PerfectFlite Stratologger altimeter.  Since I plan on buildin' a dual-deploy rocket in t' near future, me bucko, I decided t' set it up for altimeter controlled apogee deployment so I could gain experience with black powder ejection charges. 

Parts List:

LOC/Precision - 2.1"ID airframe-34", ya bilge rat, 2-2.1" bulkheads, 5.75" coupler for 2.1" airframe, 2 quicklinks, 1 swivel.

Dog House Rocketry - 1.5oz. Begad! Charge cup, 2 position terminal strip, rotary switch, me hearties, wirin' pigtail.

PerfectFlite - Stratologger altimeter, USB data transfer kit.   

I started with t' altimeter sled first.  Usin' 1/8" aircraft grade plywood, me bucko, I cut a 2.1"w X 8"l piece with me table saw.  I had t' slightly notch t' bottom 2.5" or so, so that it would slide in past t' coupler at t' bottom o' t' payload section.  This notch will lock t' sled in place with t' nose cone installed as it will be sandwiched betwixt t' nose cone and t' coupler. 

 Altimeter Sled Components                   Completed Altimeter Sled