09-27-2012, 06:01 PM
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The_Ripper
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Join Date: Jun 2005
Location: Louisiana
Posts: 1,941
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Quote:
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Originally Posted by A Fish Named Wallyum
This is a minimum diameter 18mm bird, 14.125" long, streamer recovered, with spin fins. No identifying marks other than a piece of tape that says "Sound Barrier Backup". It was an Ebay bird and I'm trying to find out if it was a commercially available kit, or if it was just a bird tossed together for max altitude and duration.  |
Bill,
I flew some CMR kits back in the 70's. That looks like the upper stage of the two stage CMR Hyper rocket that I had back then that was a payload model and had thin plywood fins. Are the fins on your model plywood?
Give the nose cone a little squeeze and see it it's that really lightweight plastic that CMR used and that's probably it. Pull the nose cone out and does the shoulder have a small pinhole in the center to attach a thread for attachment to the shock cord?
I flew mine with the pop lug and even on 1/2A and A motors in both stages it would fly completely out of sight until ejection. I only recovered it because I used full length 10 foot CMR mylar streamers for recovery.
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