Oh, wow--yes, that ad *is* interesting--Thank You for posting it! I don't mean to be morbid here, but with AVI's owner, Myke Bergenske, having died recently (at age 80, I believe), I figured that it would be prudent to seek out anyone who might have "cloning data" on old kits such as these (which are "missing entries" on the Ye Olde Rocket Plans website and JimZ's website), before such knowledge dies with those who have it. Anything that we can save from oblivion now can be preserved for future generations (I wonder if anyone has any of the BoMar kits, none of which are listed on Ye Olde Rocket Plans; other than their 1969 catalog [see:
http://www.ninfinger.org/rockets/ca...69bomarcat.html ] and perhaps a few ads in
Model Rocketeer, nothing about them has survived), and:
I wonder if the AVI Sounder (called the Delta-Vee Sounder in the 1973 AVI catalog:
http://www.ninfinger.org/rockets/no...a/73avicat.html ) and the U.S.S. Eagle kits might have used Estes BT-60 (1.637" O.D.) or Centuri #16 Series (1.640" O.D.) tubing? The
Model Rocketeer advertisement and the AVI catalog both gave its diameter as just 1.6" (oddly, all of the other kits listed in the AVI 1973 catalog--the same ones as were in the ad--had their precise decimal inch and millimeter diameters listed, while in the
Model Rocketeer ad, their diameters were all rounded off. But regardless, it's wonderful to see an actual photograph of all of them! Also:
The two-stage Space Angel definitely used the 15 mm minimum-diameter Miniroc body tubes, and also the 5:1 tangent ogive nose cone that was used in the MPC/AVI Taurus-1, Super Star, Astrobee D, and Delta Katt kits. The Mini-Hawk is easy to clone, using a 6" (if memory serves) length of Quest 20 mm tubing, and the old MPC-type Tomahawk plastic fin unit and PNC-20 nose cone (Quest used to make these; they now make a slightly different PNC-20, and a Tomahawk-like, slide-on fin unit, which could be used to make a "near-clone" Mini-Hawk [although the old MPC/AVI parts could also be 3D printed]). The Nike-Tomahawk could be built using either a stage coupler/center tube/balsa internal gussets/card stock shroud scale interstage, or a 3D printed one. It could be flown either "stock" (single stage), or it could be gap-staged, with streamer or parachute recovery of the Nike booster (or the model could even use electronic second stage ignition).