Right at my own club! Hmm, maybe I won't build one. :eyeroll:
That video is Jerry O's 7.5 inch two stage iris .
Oh, then not full-scale.
Here is one of the four fins from my full scale . They are made from 1 inch blue foam board hot wired to shape . The orange is 1/4 inch oak . There is 3 layers of 5.5 oz glass covering everything . The fin tabs are full length and have not been cut down yet . Still trying to decide on the final motor mount configuration .
Eric
Edit . the pink line is a 12 inch ruler .
Cool. Are you doing a build thread?
Eventually I will post a thread when it is done . The rocket is ultra-light weight . The rocket is on track to be between 37 and 42 pounds loaded without the motor .
Eric
ULTRA-light is right!!! Wow!
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